Week 4 - Exam 1

Question 1

periosteum function & composition

Answer 1

surrounds bone in a layer; collagen fibers, mesenchymal cells, osteoblasts, osteoclasts

Question 2

periosteal function

Answer 2

new bone formation

Question 3

mesenchymal cells can become

Answer 3

osteocyte, chondrocyte, muscle cell, stromal cell, or fibroblast

Question 4

osteoblasts function

Answer 4

store calcium, new bone formation

Question 5

osteoclast characteristics

Answer 5

multinucleated, brush border, resorption, acid hydrolases pH decrease

Question 6

osteoclast function

Answer 6

bone resorption and remodeling (by using brush border, applying acid, & sealing it)

Question 7

2 types of bone

Answer 7

lamellar & woven (spongiosa)

Question 8

woven bone characteristics & example

Answer 8

large lacunae & collagen fibers randomly arranged ; end of long bones/skull

Question 9

lamellar bone characteristics

Answer 9

cells and collagen in an orderly fashion, found in adult bone, artery vein & nerve inside

Question 10

muscle tissue main function

Answer 10

voluntary & involuntary contractility

Question 11

what helps muscle contractility

Answer 11

myofilaments

Question 12

2 types of myofilaments

Answer 12

actin & myosin

Question 13

example of striated voluntary

Answer 13

skeletal

Question 14

example of nonstriated involuntary

Answer 14

smooth

Question 15

example of striated involuntary

Answer 15

heart

Question 16

skeletal muscle tissue characteristics

Answer 16

striated, peripheral nuclei & multinucleated, voluntary, short & fast actions

Question 17

smooth muscle tissue characteristics

Answer 17

nonstriated, peripheral nuclei & multinucleated, involuntary, long & slow actions

Question 18

cardiac muscle tissue characteristics

Answer 18

striated, involuntary, central nuclei, short & fast actions