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A&P - Chap 4

tissue groups of associated cells that have the same function
epithelial tissue, epithelium (2 types) covering/lining epithelium, glandular epithelium
5 functions of epithelium protection, absorption, filtration, excretion, secretion
apical surface free surface exposed to the body exterior or the cavity of an internal organ
does epithelium contain blood vessels? NO (receives nutrients by diffusion)
basal surface is opposite of? lies on what? apical, basal lamina
basal lamina separates epithelium from underlying connective tissue
reticular lamina connective tissue below the basal lamina
basement membrane is what two? basal lamina + reticular lamina
simple epithelia (definition and 2 functions) composed of single layer of cells, absorption and filtration
stratified epithelia (definition and 1 function) composed of multiple stacked cell layers, protects against abrasion
squamous flattened and scale-like
cuboidal as tall as they are wide
columnar tall and column shaped
endothelium slick, friction reducing lining in lymphatic vessels and blood vessels and heart
mesothelium found in serous membranes lining the ventral body cavity and its organs
the epidermis of the skin is keratinized
gland one or more cells that make and secrete a particular product
do endocrine glands have ducts? NO
endocrine glands produce what? hormones
exocrine glands have ducts? yes
exocrine glands secrete their products where? body surfaces or into body cavities
mucin dissolves in water and forms? mucus
merocrine glands secrete how? by exocytosis
holocrine glands secrete how? entire cell ruptures releasing secretions and dead cell fragments
apocrine glands secrete how? apex of each cell pinches off and releases secretions
3 examples of merocrine glands? sweat, salivary, pancreas
1 example of holocrine? oil glands
1 example of apocrine? mammary glands
4 functions of connective tissue? binding/support, protection, insulation, transportation
connective tissue has what kind of matrix? extracellular matrix, separates the living cells of the tissue
what is ground substance of connective tissue? composed of 2 things? unstructured material that fills space between cells and contains fibers, contains interstitial fluid and proteoglycans
3 types of fibers? collagen, elastic, reticular
collagen fibers provide high tensile strength
elastic fibers provide extension and recoiling
fibroblasts are in what tissue? connective
chondroblasts are in what tissue? cartilage
osteoblasts are in what tissue? bone
hemocytoblasts are in what tissue? blood
what do blasts do? synthesize the matrix and and the fibers of the matrix
blasts turn mature and are called? cytes
2 subgroups of connective tissue? loose connective tissue, dense connective tissue
3 loose connective tissues? areolar, adipose, reticular
3 dense connective tissues? dense regular, dense irregular, elastic
areolar membranes
adipose fat
reticular lymph, spleen
dense regular tendons, ligaments
dense irregular joint capsules
elastic connective tissue aorta, trachea, vocal cords
3 types of cartilage hyaline, elastic cartilage, fibrocartilage
hyaline ribs
elastic cartilage ear
fibrocartilage intervertebral discs
osseous tissue bone
mucous membranes are underlied by what? lamina propria
intercalated discs junctions that fit cardiac muscle cells together
Created by: ngrable