tissues Flashcards

1
Q

4 categories of tissue

A

epithelial, connective, muscle, neural

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2
Q

what epithelial do

A

physical protection (abrasion, dehydration) , control permeability, provide sensation ( touch receptor)

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3
Q

exocrine secretions

A

secretions discharged the surface through ducts

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4
Q

endocrine secretions

A

secretions released into the surrounding tissue fluid and blood (ductless)

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5
Q

mode of secretion: merocrine

A

uses mucus (saliva, digestive system)

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6
Q

mode of secretion: apocrine

A

cell looses cytoplasm containing the secretion (pits, milk)

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7
Q

mode of secretion: holocrine

A

cell bursts and dies to release secretion (oil of skin and hair)

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8
Q

endocrine glands

A

release inside body: pituitary, parathyroid, thyroid, thymus, adrenal, pancreas, ovary, testes

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9
Q

exocrine glands

A

release to surface of epithelium: salivary, mammary, sebaceous (oil)

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10
Q

cell adhesion molecules

A

glue holding cells together

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11
Q

tight junction

A

proteins on cell membranes interlock

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12
Q

gap junction

A

channel proteins bund leaving a tube for communication

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13
Q

desmosomes

A

intracellular cement for places that twist, bend, etc

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14
Q

basement membrane

A

all cells connect to this somehow

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15
Q

epithelial renewal and repair

A

cells only live a day or two so continuous cell division to stem cells found near basement membrane

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16
Q

epithelium

A

layers of cells that cover internal or external surfaces

17
Q

mucous membrane

A

keeps epithelia moist

18
Q

serous membranes

A

creates visceral and parietal linings

19
Q

cutaneous membrane

A

covers the surface of the body

20
Q

synovial membrane

A

creates synovial fluid to lubricate joints

21
Q

extracellular matrix

A

extracellular protein fibers (collagen and elastin) and ground substance (fluid around cells)

22
Q

connective tissue

A

blood, lymph, cartilage, bone, adipose, dense CT (tenons, ligaments)

23
Q

red blood cells

A

erythrocytes

24
Q

white blood cells

A

leukocytes

25
cartilage cells
chondrocytes
26
fibroblasts
loose and dense connective tissue
27
4 responses to injury
swelling, warmth, redness, and pain
28
mechanism during injury
release of histamine causing blood vessels to dilate increasing blood flow to damaged area
29
regeneration
fibroblasts create a collagen patch to close large wounds - scar over time the tissue will remodel to become normal in appearance