Chapter 7: Bones

Question 1

What are the functions of bones?

Answer 1

1. Support and protect softer tissues
2. Provide points of attachment for muscles
3. House blood-producing cells
4. Store inorganic salts

Question 2

In what ways do bones differ?

Answer 2

Size & Shape

Question 3

In what ways are bones similar?

Answer 3

Structure, Development, & Function

Question 4

What are the 4 shapes bones can be classified as?

Answer 4

1. Long
2. Short
3. Flat
4. Irregular

Question 5

How much of the bone matrix contains inorganic mineral salts?

Answer 5

70%

Question 6

What is the most abundant salt in the bone?

Answer 6

Calcium Phosphate

Question 7

What other ions are found in the bone?

Answer 7

1. Magnesium
2. Sodium
3. Potassium
4. Carbonate

Question 8

What is osteoporosis?

Answer 8

A condition that results from the loss of bone mineralization.

Question 9

What happens when the blood calcium gets too low?

Answer 9

The parathyroid gland releases the PTH, which stimulates the action of osteoclasts, breaking down bone, and releasing calcium to the blood.

Question 10

What happens when the blood calcium gets too high?

Answer 10

Thyroid gland releases calcitonin, which stimulates the action of osteoblasts, depositing calcium into the bones.