ap Flashcards
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10918704816 | Nervous tissue | internal communication; brain, spinal cord, nerves neurons- receive, send, and process nerve impulses - Dendrites: collect signals (listens) - Axons: carries messages (speaks) glial cells- support, insulation, protection and tethering them to blood vessels | 0 | |
10918711814 | Muscular tissue | movements and contractions - skeletal: bones (body movements, expressions, posture), obvious striations, voluntary, multiple nuclei - cardiac: heart (pumping of blood), involuntary, striated with intercalated disc, messy cell shapes, one nucleus - smooth: lines walls of blood vessels and hollow organs like digestive and urinary tract and uterus, no striations, short and tapered at end, involuntary, packed together | 1 | |
10918726201 | Epithelial tissue | lines and covers and generally organizes the body protection, secretion, excretion, absorption, filtration, sensation skin surface (epidermis), lining of GI tract, & other hollow organs | 2 | |
10918732456 | Two main types of Epithelia tissue | 1. Covering and lining of external and internal surfaces 2. Glandular epithelium (secretory tissue in glands) - forms your glands and secretes hormones | 3 | |
10918737394 | Glandular Epithelium: Endocrine & Exocrine | - Endocrine: secretes hormones (pineal, pituitary, thyroid, adrenal, pancreas, ovaries, testes - Exocrine: secrete products into ducts (sweat, saliva, mucus, stomach acid, milk) | 4 | |
10918742436 | Parenchyma | cells produce and secrete substances simple cuboidal or columnar | 5 | |
10918745002 | Characteristics of Epithelial tissues | 1. cells have polarity meaning distinct sides - apical (upper, free) - basal (lower, attached) 2. composed of closely packed cells - cell junctions: tight junctions, gap (communication) junctions, & desmosomes - tight junctions prevents leaking and invasion of bacteria - gap (communication) junction water filled channels and allow direct electrical excitation - desmosomes holds cells together, prevents separation, and resist mechanical stress 3. supported by connective tissue reticular lamina 4. tissues are avascular meaning they are not associated with blood vessels - no blood supply 5. high rate of regeneration | 6 | |
10918761149 | shapes of epithelial tissue | squamous, cuboidal, columnar - squamous: flat scale; fast absorption and diffusion easy for oxygen to move inside of it because it is flat - cuboidal: cube, absorb nutrients and produces secretions (sweat) - columnar: tall and thick, absorb nutrients and produces secretions (stomach lining, make and secrete mucus) | ![]() | 7 |
10918768797 | simple squamous epithelium | Function: Allows passage of materials by diffusion and filtration in sites where protection is not important; secretes lubricating substances in serosae. Location: Kidney glomeruli, air sacs of lungs, lining of heart, blood vessels, and lymphatic vessels; lining of ventral body cavity(serosae) | ![]() | 8 |
10918769901 | simple cuboidal epithelium | Function: secretion and absorption Location: Kidney tubules; ducts and secretory portions of small glands, ovary surface. | ![]() | 9 |
10918770880 | simple columnar epithelium | Function: Absorption; secretion of mucus, enzymes, and other substances; ciliated type propels mucus (or reproductive cells) by ciliated action. Location: nonciliated type lines most of the digestive tract (stomach to anal canal), gallbladder and excretory ducts of some glands; ciliated variety lines small bronchi, uterine tubes, and some regions of the uterus. | ![]() | 10 |
10918773952 | simple pseudostratified columnar epithelium | -only appears to be stratified -cilia located on the free surface of these cells -goblet cells -secrets and propels respiratory mucus -found in respiratory system and urethra | 11 | |
10918776507 | stratified squamous epithelium (keratinized) | Function: protects underlying tissues in areas subject to abrasion; retards water loss Location: epidermis; palms and soles | 12 | |
10918782644 | stratified squamous epithelium (non-keratinized) | Function: same as keratinized but no layer of dead cells resist abrasion and penetration by pathogenic organisms Location: tongue, oral mucosa, esophagus, anal cavity, vagina | 13 | |
10918787130 | stratified cuboidal epithelium | Function: protection Location: Largest ducts of sweat glands, mammary glands, and salivary glands. | 14 | |
10918788354 | stratified transitional epithelium | function: stretches to allow filling; protects from osmotic damages location: urinary tract- kidney, bladder, urethra, ureter | 15 | |
10918792386 | Types of secretion: | serous glands (produce thin, watery fluids) - perspiration, milk, tears mucous glands (produce glycoprotein) - absorbs water and forms sticky mucus mixed exocrine glands both serous and mucous cells | 16 | |
10918799715 | cutaneous membrane | The skin; composed of epidermal and dermal layers stratified squamous epithelia dry | 17 | |
10918801752 | serous membrane (serosa) | Thin, double-layered membrane separated by serous fluid | 18 | |
10918802614 | Connective tissue | supports, protects, binds other tissues together -bones and cartilage -tendons and ligaments -fat and other soft padding tissue | 19 | |
10918806257 | -blasts | create the matrix, example osteoblast immature "forming" | 20 | |
10918808157 | -clasts | break the matrix down for remodeling | 21 | |
10918809119 | -cytes | maintain matrix less active mature | 22 | |
10918812569 | chondroblast | cartilage | 23 | |
10918813756 | osteoblasts | bone | 24 | |
10918815544 | hematopoietic | bone marrow | 25 | |
10918817265 | Connective tissues have: | 1. mesenchyme as common origin 2. diff degrees of vascularity (blood flow) 3. cells are separated by nonliving (extracellular matrix (ground substance, fibers, and cells) - allows tissue to bear weight, withstand tension, and stress | 26 | |
10918825195 | protein fibers of connective tissue | collagen - white fibers, strongest, and most abundant Elastic - yellow fibers, long, thin, elastic fibers (stretch and recoil) reticular - short fine highly branched collagenous fibers | 27 | |
10918831770 | ground substance of connective tissue | medium through which solutes diffuse between blood capillaries and cells Components: - hyaluronic acid: slippery, good lubricant for joints - proteoglycans: protein core and trap waters in varying amounts | 28 | |
10918837608 | cells of connective tissue | adipose: dermis of skin mast cells: beneath membranes; along small blood vessels leukocytes: white blood cells macrophages: provide protection platelets: fragments of hematopoietic cells (blood clotting) | 29 | |
10918848419 | loose (areolar) connective tissue | allows passage of nerves and other vessels vessels; fascia between muscles; visceral layers of pericardium and pleura | 30 | |
10918856537 | loose reticular connective tissue | lymphoid organs (lymph nodes, bone marrow, and spleen) holds your blood | 31 |