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Animal Forms and Tissues
N/A
35
Biology
Undergraduate 2
04/06/2014

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Term
Characteristics of animals
Definition
  1. Eukaryotes
  2. Heterotrophs
  3. Multicellular
  4. Motility
  5. Muscles controlled by nervous system
  6. Internal digestion
  7. Specialized cell junctions
  8. Hox genes
Term
Cyanoflagellate
Definition
Closest relative outside of animal clade
Term
Pathway to multicellular animal
Definition
  1. More rigid adherence of cells
  2. Animal cell junctions
  3. Specialization
  4. Further differentiation of cells
  5. Cell communication
  6. Increased size of animal
  7. Increased complexity of animal
Term
Attaches cell cytoskeleton to collagen and other proteins in ECM
Definition
Integrin
Term
Cell adhesion molecules (CAMs)
Definition

Connects cells to one another

Determines the gap size between cells

Term
Junction that prevents materials in ECM from leaking between cells and prevents proteins in PM from migrating to other side of cell
Definition
Tight junctions
Term
Junctions that bind cells tightly but do not prevent movement of material between cells or within cell membrane
Definition
Desmosomes
Term
Pores that allow cells to exchange materials
Definition
Gap junctions
Term
Systems of cell communication
Definition
Nervous system and endocrine system
Term
Radial symmetry
Definition
Organs radiate outwards; infinite lines of symmetry within a certain plane.
Term
Bilateral symmetry
Definition

Definite anterior/posterior ends and dorsal/ventral ends

Associated with greater motility

Term
Sac-like digestive system
Definition

One opening for food and excretion

Functions in circulation, gas exchange, and as a hydrostatic skeleton

Term
Limitations of the sac-like digestive system
Definition
  1. Less specialization for ingetsion and excretion
  2. Less specialization for nutrient absorption and digestion
  3. Restricts animal to small size
Term
Tube digestion system
Definition
Two openings: Mouth and anus
Term
Advantages of the tube-like digestion system
Definition
  1. Allows for bigger organism
  2. Specialization: ingestion, absorption, excretion, digestion
Term
Requirement of organism with tube-like digestive system
Definition
It must have evolved an exchange system, as cells are no longer in contact in nutrients
Term
Lacks body cavity surrounding organism
Definition
Acoelomate
Term
Internal organs are not fully lined by mesoderm; body cavity is present
Definition
Pseudocoelomate
Term
Coelom present; tissue layer lines coelom and suspends internal organs (from mesoderm)
Definition
Coelomate
Term
Segments that repeat
Definition
Metamers (mers)
Term
Types of appendages
Definition
  1. Feet
  2. Hands
  3. Antennae
  4. Claws
  5. Mouths
  6. Appendages for transfer of sperm or egg incubation
Term
[image]
Definition
Epithelial tissue
Term
Functions of epithelial tissue
Definition
  1. Barrier
  2. Exchange
  3. Communication via chemical signals (slow)
  4. Reproduction
  5. Coordination
Term
[image]
Definition
Skeletal muscle tissue
Term
Function of muscle tissue
Definition
Movement
Term
Description of skeletal muscle tissues
Definition
  1. Multinucleate
  2. Striated
  3. Receiving end of voluntary NS
  4. Fast
Term
Description of cardiac muscle tissue
Definition
  1. Has some gap junctions
  2. Has som striations
  3. Myogenic
  4. Rhythmic
Term
Description of smooth muscle tissue
Definition
  1. Non-striated
  2. Mainly controlled by enteric NS
  3. Involuntary NS receptor
  4. Slow
Term
[image]
Definition
Connective tissue
Term
Fuction of connective tissue
Definition
  1. Storage
  2. Transport of blood
  3. Structure
  4. Flexibility
Term
Types of connective tissue
Definition
  1. Adipose
  2. Cartilage
  3. Bone
  4. Blood
Term
[image]
Definition
Nervous tissue
Term
Types of nervous tissue
Definition
  1. Nervous
  2. Glial
Term
Functions of nervous tissue
Definition
  1. Communication and coordination via electrochemical signaling
Term
Organ
Definition
Two or more different tissue types arranged spatially to perform a particular function or set of functions
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