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Chapter 4 Tissues

groups of cells similar in structure and function tissue
4 types of tissues epithelial, connective, nerve, muscle
type of tissue that forms boundaries epithelial
cells have polarity epithelial
composed of closely packed cells epithelial
supported by connective tissue epithelial
high rate of regeneration epithelial
apical surfaces upper, microvilli and cilia
basal surfaces attached, lower
1 layer of cells simple epithelium
more than one layer of cells stratified epithelium
one layer of cells, looks like multiple layers pseudostratified epithelium
flattened cells squamous
cube cells cuboidal
column cells columnar
single layer of flattened cells simple squamous
located in kidney and lungs simple squamous
allows passage of materials by diffusion and filtration simple squamous
single layer of cube cells, round nuclei simple cuboidal
function: secretion and absorption simple cuboidal
located in kidney tubules simple cuboidal
lining of lymphatic vessels, blood vessels and heart simple squamous, endothelium
epithelium of serious membranes in ventral body cavity simple squamous, mesothelium
single layer of tall cells, oval nuclei simple culumnar
function: absorption and secretion of mucus simple columnar
located in the digestive tract simple columnar
single layer of cells of different heights pseudostratified columnar
function: secretion, usually mucus pseudostratified columnar
located along trachea and most of upper respiratory tract pseudostratified columnar
think membrane of several cell layers, basal layer is cuboidal or columnar, surface cells are flat stratified squamous
protects underlying tissues in areas subjected to abrasion stratified squamous
located in the linings of the mouth and forms epidermis stratified squamous
sweat and mammary glands, rare, 2 cell layers hink stratified cuboidal and columnar
resembles both stratified squamous and stratified cuboidal transitional epithelium
stretches and permits distension transitional epithelium
located in ureters, bladder, part of urethra transitional epithelium
protects, supports and binds together other body tissues connective tissues
most abundant and widely distributed tissue in body connective tissue
4 classes of connective tissue blood, bone tissue, cartilage, connective tissue proper
mitotically active and secretory cells blasts
mature cells cytes
fibroblasts connective tissue proper
chondroblasts and chondrocytes cartilage
osteoblasts and osteocytes bone
hematopoietic stem cells, fat cells, white blood cells, mast cells, macrophages bone marrow
3 types of loose connective tissue areolar, adipose, reticular
matrix with all 3 fiber types areolar
wraps and cushions organs areolar
widely distributed under epidermis areolar
nucleus pushed to side by fat droplet adipose
provides reserve food fuel adipose
located under skin in the hypodermis adipose
network of reticular fibers reticular
supports other cell types reticular
located in lymphoid organs reticular
primarily parallel collagen fibers dense regular
attaches muscles to bones or muscles dense regular
tendons, most ligaments dense regular
3 types of cartilage hyaline, elastic, fibro
chondrocytes lie in lacunae within matrix hyaline cartilage
cartilage that supports and reinforces hyaline
all adult cartilage structures articulated with bone hyaline
matrix similar but less firm than hyaline fibrocartilage
cartilage that absorbs compressive shock fibrocartilage
cartialge located in invertebral discs, knee joint discs fibrocartilage
hard calcified matrix osseous tissue, bone
bone supports and protects by enclosing osseous tissue, bone
located in bones osseous tissue, bone
composed of branched neurons nervous tissue
transmits electric signals nervous tissue
located in brain, spinal cord, nerves nervous tissue
3 types of muscle tissue skeletal, cardiac, smooth
long, cylindrical, obvious striations, multi-nuclei skeletal muscle
voluntary movement skeletal muscle
branching, striated, specialized junctions cardiac muscle
uniform contraction, involuntary movement cardiac muscle
located in the walls of the heart cardiac muscle
spindle-shaped cells with central nuclei, no striations smooth muscle
propels substances or objects smooth muscle
walls of hollow organs smooth muscle
Created by: c8linpluemacher



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