ch. 7 part 8 anatomy

Question 1

First step to activating vitamin D to calcitriol

Answer 1

UV light converts to vitamin D3 and released into the blood; cholecalciferol

Question 2

Second step to activating vitamin D to calcitriol

Answer 2

Vitamin D3 circulates throughout the body; converted to calcidiol by liver enzymes

Question 3

Third step to activating vitamin D to calcitriol

Answer 3

Calcidiol circulates in the blood; converted to calcitriol by kidney enzymes

Question 4

Two ways aging affects bone?

Answer 4

Decreased tensile strength of bone and bone loss of calcium and other minerals

Question 5

What is osteopenia?

Answer 5

Insufficient ossification

Question 6

What is osteoporosis?

Answer 6

Reduced bone mass sufficient to compromise normal function

Question 7

What are the 4 different types of fractures?

Answer 7

Stress, pathologic, simple, and compound fractures

Question 8

What is stress fracture?

Answer 8

Thin break caused by increased physical activity

Question 9

What is pathologic fracture?

Answer 9

Occurs in bone weakened by disease

Question 10

What is simple fracture?

Answer 10

Broken bone stays in skin

Question 11

What is compound fracture?

Answer 11

Broken bone goes outside the skin

Question 12

First step to bone healing

Answer 12

Fracture hematoma forms from clotted blood

Question 13

Second step to bone healing

Answer 13

Fibrocartilaginous callus forms

Question 14

Third step to bone healing

Answer 14

Hard callus forms

Question 15

Fourth step to bone healing

Answer 15

Bone is remodeled