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BSC 215 Study guide
BSC 215 Test 1
232
Science
Undergraduate 2
05/27/2011

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Term
Levels of Complexity
Definition
a. Organism
b. Organ systems
c. Organs
d. Tissues
e. Cells
f. Organelles
g. Molecules
h. Atoms
Term
Homeostasis
Definition
Maintain internal conditions despite external conditions
Term
Negative Feedback
Definition
Body senses a change and activated mechanisms to reverse is
Term
Afferent
Definition
Approaches control center
Term
Efferent
Definition
Exits control center
Term
Afferent signals
Definition
leading to the control center
Term
Control center
Definition
Decision Maker
Term
Efferent Signals
Definition
Carry signals away from control center
Term
Effectors
Definition
cell(s) or organ(s) that respond to carry out corrective action
Term
Set Point
Definition
A range of tolerable internal conditions, always variable and dynamic throughout day
Term
Receptor
Definition
Detects stretch, tissue damage, blood chemicals, body temperature, and other stimuli
Term
Positive Feedback
Definition
For emergencies, body needs to amplify deviations from the set point. Example: Cuts and Labor
Term
Superior
Definition
Toward the head, above
Term
Inferior
Definition
Away from the head, below
Term
Homeostasis
Definition
Ability of the body to maintain relatively stable internal conditions despite changes in the external environment
Term
Ventral
Definition
Toward the front
Term
Dorsal
Definition
Toward the back
Term
Medial
Definition
Toward the midline
Term
Lateral
Definition
Away from the midline
Term
Intermediate
Definition
Between a more medial and a more lateral structure
Term
Proximal
Definition
Closer to origin of limb or trunk
Term
Distal
Definition
Farther from the origin or trunk
Term
Superficial
Definition
Toward the body surface
Term
Deep
Definition
Away from the body surface, more internal
Term
Transverse
Definition
Divide into superior and inferior
Term
Sagittal
Definition
Divide into right and left
Parasagittal: Away rom midline
Midsagittal: exactly along midline
Term
Frontal
Definition
Divide into anterior and posterior
Term
Oblique
Definition
Cuts made diagonally between sagittal and transverse planes
Term
X-ray Radiograph
Definition
Directing x-rays to generate a "negative"
Term
Computed Tomography (CT)
Definition
Spinning tube allows "slices" of body to be visualized; cross sections
Term
Sonography
Definition
2nd oldest and 2nd used
Sound waves to echo back from organs
Term
Position Emission Tomography (PET)
Definition
Observation of metabolic processes, radio-labeled biologival molecules injected to visualize performance and activity of organ systems
Term
Magnetic Resonance Imaging (MRI)
Definition
Can provide visuals of soft tissue, relies on energy released from water that spin in the magnetic field
Term
Functional Magnetic Resonance Imaging (fMRI)
Definition
Tracks blood flow in brain in real-time; ascertain brain activity in response to various stimuli
Term
Matter
Definition
Anything that occupies space and has mass
Term
Kinetic Energy
Definition
Movement of particles or objects ("active energy")
Term
Potential Energy
Definition
Stored energy (has the potential to do work)
Term
Law of Conservation of Energy
Definition
Total amount of energy in an isolated system remains constant, energy can neither be created nor destroyed
Term
Element
Definition
Substance that can not be broken down into simpler substances
Term
6 main elements in the body
Definition
Oxygen
Carbon
Hydrogen
Nitrogen
Calcium
Phosphorus
Term
Atom
Definition
Smallest individual unit of matter, loses its unique characteristics when broken down
Term
Atomic Number
Definition
Number of Protons in nucleus
Term
Atomic Mass
Definition
Sum of Protons and Neutrons
Term
Isotopes
Definition
Structural variants of the same element; different number of neutrons and thus, a different atomic mass
Term
Compound
Definition
2 or more different elements combine
Term
Electrically neutral
Definition
All atoms are electrically neutral because the number of protons is exactly balanced by the number of electrons
Term
Radioactive
Definition
Atomic decay ?????????????
Term
Half Life
Definition
Term
Inert
Definition
Non reactive element, full valence shell
Term
Ionic Bonds
Definition
Complete Transfer of electrons from one atom to another
Term
Non-Polar Covalent Bonds
Definition
Electrons are shared equally and each atom fills its outer electron shell
Term
Single Covalent bond
Definition
Sharing one electron
Term
Double Covalent bond
Definition
Sharing two electrons
Term
Triple Covalent Bond
Definition
Sharing three electrons
Term
Polar Covalent Bond
Definition
Unequal sharing of electrons
Term
Electronegative
Definition
Strongly attract electrons (usually have a "close to full" valence shell) gives partial negative and partial positive charges
Term
Hydrogen Bond
Definition
Weak Attractions between the "poles" of water molecules, stabilize biological molecules
Term
Inorganic
Definition
Typically those molecules that do not contain carbon; salts acids, bases, water
Term
Organic
Definition
Those molecules that contain carbon and are covalently bonded; proteins, carbohydrates, lipids, DNA
Term
Acids
Definition
All are electrolytes: ionize and dissociate in water and can conduct electrical current; Proton Donors
Term
Bases
Definition
All are electrolytes: ionize and dissociate in water and can conduct electrical current; Proton acceptors
Term
Buffer
Definition
Release H+ when pH begins to rise
Bind H+ when pH begins to fall
Term
pH Scale
Definition
Higher H+, More acidic; 0-7
Higher OH-, More basic;7-14
Neutral is 7
Term
Synthesis Reaction
Definition
Bond formation, anabolic: A+B=AB
Term
Decomposition Reaction
Definition
Bond breakage, catabolic: AB= A+B
Term
Displacement Reaction
Definition
Both breakage and formation: AB+C+ AC+B
Term
Oxidation-Reduction (Redox) Reactions
Definition
Drive catabolism of foods for energy
Basis for reaction is Electron Exchange
Term
Oxidized
Definition
Electron donors lose electrons
1. Lose a hydrogen atom
2. Combine with oxygen
Term
Reduction
Definition
Electron acceptors gain electrons
Term
Carbohydrates
Definition
Contain carbon, hydrogen, and oxygen
Monosaccharides as the building blocks
Term
Carbohydrates: Disaccharides
Definition
Made by joining monosaccharides
Must be digested (broken into monosaccharides) to be utilized by the body
Term
Carbohydrates: Polysaccharides
Definition
Long strings of monosaccharides
Glycogen: Only polysaccharide in human tissues
-produced by liver, stores energy
Term
Lipids
Definition
Contain carbon, hydrogen, oxygen (can contain phosphorus)
Term
Lipids: Triglycerides
Definition
Fats (solids) or Oils (liquid)
Term
Lipids: Saturated
Definition
Single bond only, straight chain, solid
Term
Lipids: Unsaturated
Definition
One or more double bonds, kinked chain, liquid
Term
Lipids: Phospholipids
Definition
Structural foundation of cell membranes
Term
Trans fats
Definition
Partially hydrogenated fats that are less vulnerable to becoming rancid than the original oils
Term
Why trans fats are bad...
Definition
They resist enzymatic breakdown in the human body, remain in circulation longer, deposits in the arteries, raises risk of heart disease
Term
Lipids: Steroids
Definition
4 interlocking carbon rings
Term
Proteins: structure
Definition
Carbon, hydrogen, oxygen, nitrogen
Primary structural material of the body
Term
Proteins: building blocks
Definition
Amino acids (20 types)
2 functional groups: amine and organic acid
R -group distinguishes the AA's
Term
Enzymes
Definition
Proteins that function as biological catalysts
Term
How do enzymes work?
Definition
Lowers activation energy, permits reactions to occur more rapidly
Term
Nucleic Acids: Building Blocks
Definition
Neucleotides:
Adenine, Guanine, Cytosine, Thymine, Uracil
Term
Nucleic Acid: DNA
Definition
Inside nucleus
Replicated for cell division
"Instructions" for protein synthesis
AGCT
Deoxyribose (pentose sugar)
Term
Nucleic Acid: RNA
Definition
Outside nucleus
Translates DNA to prep for protein synthesis
AGCU
Ribose (pentose sugar)
Term
Phospholipid bilayer
Definition
Hydrophilic and hydrophobic layers
Double layered sheath enveloping the cell
Term
Integral Proteins
Definition
Most span entire phospholipid membrane
All must have Hydrophobic and Hydrophilic domains
Term
Peripheral Proteins
Definition
Associate loosely with integral proteins of the membrane itself
Important for maintenance of the cytoplasm
Some are enzymes
Others Participate in cell growth and plasticity (in cell devision)
Term
Glycocalyx
Definition
Sugar- coating of the cell
Enriched by glycolipids and glycoproteins
Diverse patterns of sugar distribution facilitate cell recognition
Term
Microvilli
Definition
Finger-like projections from cell surface
increase surface area of plasm membrane
DO NOT move substrates
Associated with absorption
Term
Cilia
Definition
Hairlike processes 10- 10 mm long
Term
Tight junction
Definition
Junction is impermeable o passage of molecules between cells
Term
Desmosomes
Definition
Anchor cells together preventing separation (bolt and wingnut connection between cells)
Term
Gap Junctions
Definition
specialized for communication between cells
Term
Selectively Permeability
Definition
Hydrophobic core impedes transport of ions and polar molecules
Large molecules (glucose) cannot pass
Term
1st way to cross biological membranes
Definition
Passive Mechanisms
-simple diffusion
-osmosis
-facilitated diffusion
-no energy required
Term
2nd way to cross biological membranes
Definition
Active Mechanisms
-Active Transport
-Vesicular Transport
-Consumers ATP (NEEDS ENERGY)
Term
Simple Diffusion
Definition
Substance diffuses from where it is more concentrated to where it is less concentrated
-spontaneous process
Term
Simple Diffusion: Factors affecting diffusion rate
Definition
Temp ^, motion ^
^ molecular weight, Slower
Steepness of concentration gradient ^ difference, ^rate
^ Membrane Surface area, ^ Rate
^ Membrane permeability, ^ Rate
Term
Osmosis
Definition
Flow of water from one side of a selectively permeable membrane to the other
Term
Hypertonic
Definition
Solution with a higher concentration of solutes
Term
Hypotonic
Definition
Solution with a lower concentration of solutes
Term
Isotonic
Definition
Solutions of equal solute concentration
Term
Active Transport
Definition
Movement of materials across the membrane that requires ATP

Requires carrier proteins that combine specifically and reversibly with a substance and can transport materials AGAINST a concentration gradient
Term
Sodium Potassium Pump
Definition
Drives sodium out of cell and potassium into the cell, against their concentration gradients
Term
Secondary Active Transport
Definition
Moving more than one substance at a time
(depends only indirectly on ATP)
Term
Symport System
Definition
substances moved in the same direction
Term
Endocytosis
Definition
Vesicular processes that bring material into the cell
Term
Exocytosis
Definition
Discharging material from the cell
Term
Cytoplasm
Definition
Cellular material between the plasma membrane and nucleus
Composed of Cytosol and Organelles
Term
Cytoskeleton
Definition
Network of rods (proteins) located in cytosol
Support system for cellular structures
Provides means for cell movement
Term
Microfilaments
Definition
Thinnest cytoskeletal elements
Composed of strands of actin
Cell mobility and shape
Term
Intermediate Filaments
Definition
Most stable of the 3 cytoskeletal elements
High tensile strength
Associate with desmosomes to resist tension
Term
Microtubiles
Definition
Largest diameter; made of tubulin subunits
Radiate from centrosome (cell center)
Determine cell shape
Docking station for organelles
Organelles moved by motor proteins
Term
Nucleus
Definition
Control Center
Contains genetic material
Dictates which kinds of proteins are synthesized by the cell
Largest cytoplasmic organelle (5 mm)
3 regions: nuclear envelope, nucleoli, chromatin
Term
Nuclear Envelope
Definition
Double membrane
Outer membrane continuous with ER & processes ribosomes
Inner membrane liked with nuclear lamina
Nuclear Pores
Nucleoplasm
Term
Nuclear Pores
Definition
participate in movement of large particles through active transport
Term
Nucleoplasm
Definition
is the inner fluis of the nucleus containing salts and nutrients
Term
Nucleoli
Definition
Spherical bodies within nucleus
Not membrane-bound
Associated with ribosome assembly
Term
Chromatin
Definition
30% DNA, 60% Histone protein, 10% RNA
Term
Histones
Definition
Pack DNA in orderly compact fashion
Regulate gene expression patterns
Term
Chromosomes
Definition
Condensed form of chromatin
Form in preparation for cell division
Term
Ribosomes
Definition
Protein and ribosomal RNA
2 subunits
Protein Synthesis
Term
Endoplasmic Reticulum (ER)
Definition
Network of interconnected tubes
Cisternae= fluid0filled cavities of ER
Closely associated with nuclear membrane
Term
Rough ER
Definition
Studded with ribosomes
associated ribosomes synthesize proteins
makes integral proteins and phospholipids
Term
Smooth ER
Definition
metabolizes lipids, synthesizes cholesterol
Synthesize steroid hormones
fat transport and absorption
detox of harmful substances
catabolism of glycogen to form glucose
Term
Golgi Apparatus
Definition
Directs cellular "traffic"
Modifies and packages proteins/lipids
Term
Lysosomes
Definition
Membranous organelles containing digestive enzymes
Digest biological molecules
Term
Endomembrane System
Definition
sER + rER + Golgi + Lysosomes + Nuclear membrane
Produce, store, and export biological molecules
Degrade potentially harmful substances
Term
Centrosome
Definition
Anchoring point for microtubules
Contains paired organelles (centrioles) oriented at 90 degrees
Centrosome-centrioles generate microtubules and are critically involved in cell division
Term
Nucleotide
Definition
DNA and other nucleic acids are polymers of nucleotides

One sugar- Deoxyribose
One Phosphate group
One Nitrogenous base
Term
Purines
Definition
Double ring
Adenine
Guanine
Term
Pyrimidines
Definition
Single ring
Cytosine
Thymine
(Uracil only in RNA)
Term
DNA structure
Definition
Molecular shape: double helix
Backbone: phosphate groups alternating with the sugar deoxyribose
Step-like connections are pairs of nitrogen bases
Term
DNA Base Pairings
Definition
A----T
C----G
Term
Law of Complementary base pairing
Definition
One strand determines base sequence of other
Term
Nucleosomes
Definition
Clusters of 8 histone proteins that are connected by DNA
Term
Sister Chromatids
Definition
Each chromosomes consists of two parallel filaments of identical DNA
Term
Gene
Definition
An information-containing segment of DNA that codes for the production of a molecule of RNA that plays a role in synthesizing one or more proteins
Term
Genome
Definition
all the DNA of one person
One 23 chromosome set
Term
Genetic Code
Definition
A system that enables the four nucleotides (ATCG) to code for the amino acid sequence of all proteins
Term
Base Triplet
Definition
A sequence of three DNA nucleotides that stand for one amino acid
Term
Codon
Definition
The 3 base sequence in mRNA
64 possible codons
Term
Protein Synthesis
Definition
DNA Sequence dictates protein synthesis
Term
RNA and three main
Definition
translator between DNA and protein
tRNA: Transfer RNA
rRNA: Ribosomal RNA
mRNA: Messenger RNA
Term
Transcription
Definition
DNA to mRNA
Term
Translation
Definition
mRNA to protein
Term
Transcription process
Definition
DNA forms complementary RNA strand
Term
Translation: Initiation
Definition
Shuttle mRNA out of nucleus into cytoplasm
Binds to ribosome small subunit
tRNA joins to mRNA and ribosome and build polypeptide
Small ribosomal subunit binds to mRNA and the 1st AA (methionine)
Large ribosomal subunit attaches to this complex
Assembled ribosome begins sliding along mRNA
Term
Translation: Elongation
Definition
Polypeptide is synthesized in a stepwise manner
Peptide bond is formed between amino acids
Continues until STOP codon is reached
Term
Translation: Termination
Definition
Polypeptide is hydrolyzed from tRNA and released
Ribosome separates into subunits
Term
Overview of Protein synthesis
Definition
DNA double helix
7 base triplets on the templet strand of DNA
Corresponding codons of mRNA transcribed from the DNA triplets
Anticodons of tRNA bind to mRNA codons
AA's carried by 6 tRNA molecules
AA's linked into a peptide chain
Term
Gene regulation
Definition
Turning genes on and off when needed
Term
Gene Regulation Example
Definition
Prolactin
Stimulates cells of mammary glands to begin synthesizing components of breast milk
Term
Interphase
Definition
growth and normal cellular activity; prep for cell division
Term
Mitotic Phase
Definition
Process of cell division
Term
Steps of Interphase
Definition
G1: rapid growth, high metabolic activity, variable lengths
Synthetic: DNA replicated, new histones made->chromatin
G2: last prep for cell division
Term
DNA replication during S phase
Definition
Helicase enzymes start unwinding double stranded DNA
Replication bubble
Replication fork
Replisome, RNA Primer, DNA Polymerase, DNA Ligasees
Term
DNA Replication: Replisome
Definition
combination of proteins that serve as the machinery for DNA replication
Term
DNA Replication: RNA Primer
Definition
Docking station for DNA Polymerase III
Term
DNA Replication: DNA Polymerase III
Definition
Adds complementary nucleotides strand and links them with hydrogen bonds
Term
DNA Replication: DNA Polymerase !
Definition
Replaces RNA primer with DNA nucleotides
Term
DNA Replication: DNA Ligases
Definition
"patch" the lagging strand
Term
DNA Replication: Histones
Definition
Histones associate with new NDA to form chromatin
Term
Mitosis
Definition
Division
Term
Cytokinesis
Definition
Division of Cytoplasm
Term
Prophase
Definition
the nuclear envelope breaks down and a spindle forms between to centrioles
Term
Metaphase
Definition
chromosomes align along the equator of the cell
Term
Anaphase
Definition
chromatids (duplicated chromosomes) are seperated
Term
Telophase
Definition
two cells begin to pull apart, a cleave is formed, a cell wall is built in between the two cells
Term
Karyotype
Definition
Chart of 46 chromosomes laid out in order by size and other physical features
Term
Homologous Chromosomes
Definition
23 pairs, the two members of each pair
Term
Autosomes
Definition
22 pairs, look alike and cary the same gene
Term
Sex Chromosomes
Definition
X and Y, 1 pair
Male: One X one much smaller Y
Female: Homologous pair of X
Term
Diploid
Definition
And cell with 23 pairs of chromosomes
Somatic Cells
Term
Haploid
Definition
Contain half as many chromosomes as somatic cells
Germ Cells
Sperm and Egg Cells
Term
Alleles
Definition
Different forms of gene at some locus on two homologous chromosomes
Term
Dominant Allele
Definition
Capital Letter
Corresponding trait is detectable in individual
Masks effect of recessive allele
Term
Recessive Allele
Definition
Lower case letter
Expressed only when present on both homologous chromosomes
No dominant alleles on that locus
Term
Genotype
Definition
The alleles that an individual possesses for that particular trait
Term
Homozygous Alleles
Definition
two identical alleles for a trait
Term
Heterozygous Alleles
Definition
Different alleles for that gene
Term
Phenotype
Definition
An observable trait
And allele is expressed if it shows in the phenotype of an individual
Term
Epithelial Tissue
Definition
Sheets of cells that cover body surface, envelops organs, and line body cavities
Forms critical boundaries between different environments
Term
Epithelial Tissue: Main functions
Definition
Protection, absorption, filtration, excretion, secretion, sensory receptors
Term
Epithelial Tissue: Characteristics
Definition
Polarity: both basal and apical surfaces
Specialized Contacts: cells fit closely together
Supported by connective tissue
Avascular
Innervated
Regeneration
Term
Epithelial Tissue: Avascular
Definition
Contains no blood vessels
Term
Epithelial Tissue: Innervated
Definition
Nerve fibers are present
Term
Epithelial Tissue: Regeneration
Definition
Capability of cell division
Term
Epithelial Tissue: Classification
Definition
1st word: # of cell layers (simple, stratified)
2nd word: cell shape (squamous, cuboidal, columnar)
Term
Simple Epithelium
Definition
Description: Single layer of flattened cells with disc shaped central nuclei
Function: Passage of materials by diffusion and filtrations
Location: Kidney, air sacs of lungs, lining of heart, blood vessels, ventral body cavity
Term
Simple Cuboidal
Definition
Description: Single layer of cubelike cells with large, spherical central nuclei
Function: Secretion and absorption
Location: Kidney Tubules, ducts and secretory portions of small glands, ovary surface
Term
Simple Columnar
Definition
Description: Single layer of tall cells with round to oval nuclei; some bear cilia, may contain goblet cells
Function: Absorption, secretion of mucus, enzymes and other substances; ciliated type propels mucus
Location: Non-ciliated: lines most of digestive tact, gallbladder, excretory glands
Ciliated: lines small bronchi, uterine tubes, and uterus
Term
Goblet Cells
Definition
Secrete lubricating mucus
Rare unicellular exocrine gland
Produce a glycoprotein that, when dissolved in water, makes a slippery substance
Term
Pseudo-stratified Columnar
Definition
Pseudo=false
Description: Single layer of cells of differing heights
Function: Secretion, particularly of mucus, propulsion of mucus by cilia
Location: Males sperm-carrying ducts, trachea
Term
Stratified Squamous
Definition
Description: Thick membrane composed of several cell layers
Function: Protects underlying tissues in areas subject to abrasion
Location: Non-keratinized: moist linings, esophagus, mouth, vagina
Keratinized: epidermis of the skin, dry membrane
Term
Stratified Cuboidal Epithelium
Definition
Rare: Exists in ducts of sweat and mammary glands
2 layers of cuboidal cells
Term
Stratified Columnar Epithelium
Definition
Rare: Exists in pharynx, male urethra, glandular duct linings
Often serves as a connection between 2 other types of epithelium
Term
Transitional
Definition
Description: Resembles both stratifies squamous and stratified cuboidal
Function: Stretched rapidly and permits distension of urinary organ by contained urine
Location: Ureters, bladder, urethra
Term
Connective Tissue
Definition
Most abundant and widely distributed tissue in the body
Term
Connective Tissue: Types
Definition
Connective tissue proper
Cartilage
Osseous tissue (bone)
Blood
Term
Connective Tissue: Functions
Definition
Binding and support
Protection
Movement
Heat production and insulation
Storage
Transport of substances
Term
Connective Tissue: Extracellular Matrix
Definition
Ground substance + Fibers
Term
Connective Tissue: Ground Substance
Definition
Fills space between cells and contains fibers
Intersitial fluis
Cell adhesion proteins
Proteoglycans (proteins with GAC's)
Term
Connective Tissue: Fibers
Definition
Support system
Collagen: Strongest, protein
Elastic Fibers: long thin and branching, protein=elastin
Reticular Fibers: short, fine, and collagenous
Term
Blasts vs Cytes
Definition
Undifferentiated cells are called "blasts"
Once matrix is sectreted cells become "cytes"
Term
Connective Tissue: Blasts
Definition
Actively mitotic
Secrete ground substance and fibers for extracellular matrix
Fibroblasts (connective tissue proper)
Chondroblasts (cartilage)
Osteoblasts (bone)
Hematopoietic stem cell (blood)
Term
Connective Tissue: Cytes
Definition
Not actively mitotic
No longer secrete ground substances or fibers
Fibrocytes (connective tissue proper)
Chondrocytes (cartilage)
Osteocytess (bone)
Erythrocytes; Leukocytes (blood)
Term
Connective tissue may differ in..
Definition
Cell type
Fiber type
Amounts of Fiber
Term
Cartilage
Definition
Can withstand both tension and compression
Very tough but flexible
Lacks innervation
Lacks Vascularization
Fluid enables it to recover quickly
Term
Osseous Tissue: bone
Definition
Support and protect body structures
Hard calcified matix containing many collagen fibers; osteocytes may lie in lacunae, very well vascularized
Term
Blood
Definition
Develops from mesenchyme and is surrounded by matrix
Term
Nervous Tissue
Definition
Primary tissue of central and peripheral nervous systems
Term
Nervous Tissue: Cell Types
Definition
Neurons: generate and transmit electrical impulses
Neuroglia: Assists in nervous impulse condition and provide nourishment
Term
Neuron Projections
Definition
Dendrites: receive stimuli
Axons: send electrical impulses
Term
Muscle Tissue
Definition
Composed of many cells and is very well vascularized
Responsible for movement
Composed of Microfilaments
Term
Muscle Tissue: Skeletal
Definition
Long, striated
Voluntary movement, facial expressions
Location: Skeletal muscles attached to bones or occasionally to skin
Term
Muscle Tissue: Cardiac
Definition
Involuntary
Only in wall of heart
Striated, branching
Cels connected by Intercalated discs
Term
Muscle Tissue: Smooth
Definition
Involuntary
No striations, single nucleus
Exists in walls of hollow organs
Term
Gland
Definition
Processes one or more cells that secrete a product
Term
Endocrine Gland
Definition
Internally secreting (ductless)
Term
Exocrine Gland
Definition
Externally secreting (possess ducts)
Term
Merocrine
Definition
Secrete products via exocytosis
Pancreas, sweat, salivary glands
Term
Holocrine
Definition
Accumulates products until cells rupture
Sebaceous glands
Term
Cutaneous Membrane (skin)
Definition
Complex organ system, dry membrane
Term
Mucous Membrane
Definition
Lines open body cavity
Term
Serous membranes
Definition
Wet membranes
Lines closed body cavities
Term
Regeneration
Definition
Replacement of damaged tissue with the same tissue type
Term
Fibrosis
Definition
Replacement of damaged tissue with fibrous connective tissues (scars)
Term
Regeneration steps
Definition
Inflammation
Blood Supply restored
Surface epithelium starts regenerating (under scab)
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