tissues

Question 1

4 categories of tissue

Answer 1

epithelial, connective, muscle, neural

Question 2

what epithelial do

Answer 2

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

Question 3

exocrine secretions

Answer 3

secretions discharged the surface through ducts

Question 4

endocrine secretions

Answer 4

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

Question 5

mode of secretion: merocrine

Answer 5

uses mucus (saliva, digestive system)

Question 6

mode of secretion: apocrine

Answer 6

cell looses cytoplasm containing the secretion (pits, milk)

Question 7

mode of secretion: holocrine

Answer 7

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

Question 8

endocrine glands

Answer 8

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

Question 9

exocrine glands

Answer 9

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

Question 10

cell adhesion molecules

Answer 10

glue holding cells together

Question 11

tight junction

Answer 11

proteins on cell membranes interlock

Question 12

gap junction

Answer 12

channel proteins bund leaving a tube for communication

Question 13

desmosomes

Answer 13

intracellular cement for places that twist, bend, etc

Question 14

basement membrane

Answer 14

all cells connect to this somehow

Question 15

epithelial renewal and repair

Answer 15

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

Question 16

epithelium

Answer 16

layers of cells that cover internal or external surfaces

Question 17

mucous membrane

Answer 17

keeps epithelia moist

Question 18

serous membranes

Answer 18

creates visceral and parietal linings

Question 19

cutaneous membrane

Answer 19

covers the surface of the body

Question 20

synovial membrane

Answer 20

creates synovial fluid to lubricate joints

Question 21

extracellular matrix

Answer 21

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

Question 22

connective tissue

Answer 22

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

Question 23

red blood cells

Answer 23

erythrocytes

Question 24

white blood cells

Answer 24

leukocytes

Question 25

cartilage cells

Answer 25

chondrocytes

Question 26

fibroblasts

Answer 26

loose and dense connective tissue

Question 27

4 responses to injury

Answer 27

swelling, warmth, redness, and pain

Question 28

mechanism during injury

Answer 28

release of histamine causing blood vessels to dilate increasing blood flow to damaged area

Question 29

regeneration

Answer 29

fibroblasts create a collagen patch to close large wounds - scar

over time the tissue will remodel to become normal in appearance