Module 3- Skeletal Function and Aging

Question 1

bones

Answer 1

structural and mineralized component of skeletal system

Question 2

joints

Answer 2

articulations between bones

Question 3

ligaments

Answer 3

connect bones to other bones

Question 4

bone structure

Answer 4

dense outer layer, loose inner area

Question 5

medullary cavities do what to bones?

Answer 5

make them hollow

Question 6

osteoprogenitor cell

Answer 6

stem cell

Question 7

osteoblasts

Answer 7

matrix-synthesizing cell
responsible for bone growth

Question 8

osteocyte

Answer 8

mature bone growth
monitors and maintains the mineralized bone matrix

Question 9

osteoclast

Answer 9

bone-resorbing cell

Question 10

collagen fibres do what?

Answer 10

collectively resist twisting forces

Question 11

framework and cradle for soft organs

Answer 11

support

Question 12

bones of skull protect brain; vertebral column protects

Answer 12

protection

Question 13

skeletal muscles attach to bones

Answer 13

anchorage

Question 14

calcium is essential for many functions; bones are calcium reservoirs

Answer 14

mineral storage

Question 15

hematopoiesis occurs in red bone marrow

Answer 15

triglyceride storage

Question 16

bones produce osteocalcin which helps regulate metabolic functions

Answer 16

hormone production

Question 17

from a hyaline cartilage membrane
(femur, ribs, vertebrae)

Answer 17

endochondral ossification

Question 18

from a fibrous membrane
(skull, clavicles)

Answer 18

intramembranous ossification

Question 19

bone remodelling involves what

Answer 19

bone deposition and resorption

Question 20

leads to in INCREASE in bone density

Answer 20

deposition

Question 21

leads to a DECREASE in bone density

Answer 21

resorption