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Chapter 4
Tissues
53
Anatomy
Undergraduate 2
09/28/2011

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Term
Epithelial tissue
Definition
a sheet of cells that covers a body surface or lines a body cavity
Term
Epithelium characteristics
Definition
polarity, specialized contacts, supported by connective tissue, avascular (no blood vessels) but innervated, regeneration
Term
Simple squamous
Definition
single layer of flattened cells with disc-shaped central nuclei and sparse cytoplasm
Term
Simple squamous
Definition
allows for diffusion and filtration; found in kidneys, air sacs of lungs, lining of heart, blood vessels, lymphatic vessels, ventral body cavity lining
Term
simple cubodial
Definition
single layer of cubelike cells with large, spherical central nuclei
Term
simple cuboidal
Definition
secretion and absorption; found in kidney tubules, ducts and secretory portions of small glands, ovary surface
Term
simple columnar
Definition
single layer of tall cells with round to oval nuclei; some cells bear cilia; layer may contain mucus-secreating goblet cells
Term
simple columnar
Definition
absorption and secretion; non-ciliated type found in digestive tract, gallbladder; ciliated type lines small bronchi, uterine tubes and some regions of uterus
Term
pseudostratified columnar
Definition
single layer of cells of differing heights, some not reaching the free surface, nuclei seen at different levels, may contain mucus-secreating cells
Term
pseudostratified columnar
Definition
secretion: mainly of mucus; non-ciliated type in males sperm ducts, ciliated lines the trachea and most of the upper respiratory track
Term
stratified squamous
Definition
thick membrane composed of several layers of cells,
Term
stratified squamous
Definition
protects underlying tissues in areas subject to abrasion; nonkeratinized- lining of the mouth, esophagus, and vagina. keratinized(contains keratin, a tough protective protein)- epidermis of the skin
Term
stratified cuboidal
Definition
rare; mainly found in the ducts of larger glands (sweat and mammary) * two layers typically
Term
statified columnar
Definition
limited; in the pharynx and the male urethra
Term
transitional
Definition
resembles stratified squamous and cuboidal cells; surface cells are dome shaped
Term
transitional
Definition
stretches readily; lines the ureters, bladder and part of the urethra
Term
gland
Definition
consists of one or more cells that make and secrete a particular product
Term
endocrine glands
Definition
often lose their ducts; produce hormones that they secrete by exocytosis into the extracellular space
Term
exocrine glands
Definition
are numerous and their products are familiar; secrete products onto the body surfaces (skin)
Term
unicellular exocrine glands
Definition
mucous or goblet cells
Term
connective tissue
Definition
found everywhere in the body; most abundant of the primary tissuees
Term
characteristics of connective tissue
Definition
common origin (mesenchyme), extracellular matrix
Term
elements of connective tissue
Definition
ground substance, fibers, cells
Term
ground substance
Definition
unstructured material that fills the space between the cells and contains the fibers
Term
collagen fibers
Definition
constructed primarily of collagen and assemble into cross-linked fibrils; extremely tough and provide high tensile strength
Term
elastic fibers
Definition
long, thin fibers that form branching networks in extracellular matrix
Term
reticular fibers
Definition
are short, fine, collagenous fibers; branch extensively and form delicate networks
Term
connective tissue proper
Definition
fibroblasts
Term
cartilage
Definition
chondroblasts
Term
bone
Definition
osteoblasts
Term
areolar
Definition
cushions organs, plays role in inflammation; holds tissue liquids
Term
areolar
Definition
widely distributed under epithelium; packages organs, surronds capillaries
Term
adipose
Definition
provides reserve food fuel; insulation against heat loss; supports and protects organs
Term
reticular
Definition
fibers form a soft internal skeleton that supports other cell types; lymphoid organs (bone marrow, spleen)
Term
dense regular
Definition
attaches muscles to bones or other muscles; withstands great tensile strength
Term
dense regular
Definition
tendons and ligaments
Term
dense irregular
Definition
able to withstand tensile strength in many directions; provides structural strength
Term
dense irregular
Definition
fibrous capsules of organs and joints, dermis of skin
Term
dense regular, elastic
Definition
allows recoils of tissue following stretching, aids in recoil of lungs after inspiration
Term
dense regular, elastic
Definition
walls of large arteries, within walls of bronchial tubes
Term
cartilage
Definition
support and reinforces, resists compression strength
Term
cartilage
Definition
forms most of the embryonic skeleton, covers the ends of large bones, in cartilages of the ribs, nose, trachea, and larynx
Term
elastic cartilage
Definition
maintains the shape of a structure while allowing great flexibility; external ear
Term
fibrocartilage
Definition
tensile strength with the ability to absorb compressive shock; intervertebral discs, pubic and knee joint
Term
bone
Definition
supports and protects; provides levers; stores calcium; contains marrow
Term
blood
Definition
transport of respiratory gases, nutrients, wastes, and other substances
Term
nervous tissue
Definition
transmits electrical signals from sensory receptors, and effectors; brain, spinal cord, and nerves
Term
skeletal muscle
Definition
voluntary motion, locomotion; manipulation of the environment; facial expression;
Term
cardiac muscle
Definition
contracts and propels blood into the circulation; walls of heart
Term
smooth muscle
Definition
propels substances along internal passageways; walls of hollow organs
Term
cutaneous membranes
Definition
skin
Term
mucous membranes
Definition
line body cavities that open to the exterior
Term
serous membranes
Definition
moist membranes found in closed ventral body cavities
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