Carla Questions 6-10: Anatomy Umaine Flashcards


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1

Mature bones cells are termed what?

Osteocytes

2

A lack of exercise would result in what type of bones?

Thin, and brittle bones

3

When stress is applied to a bone, what happens?

Osteoblast activity increases

4

The normal loss of bones that occurs with aging is called what?

Osteopenia

5

The longest and heaviest bone in the body is the what?

Femur

6

Decreasing the angle between bones is termed..

Flexion

7

Increasing the angle between bones is termed..

Extension

8

When the epiphyseal plate is replaced by bone, what does that mean?

Long bones have reached their adult length

9

Nodding your head up and down is an example of what?

Flexion and extension

10

What is great? Osteoclast activity when calcitonin is absent or present?

Osteoclast activity when calcitonin is absent

11

Vitamin D is necessary for what?

Absorption and transport of calcium and phosphate ions

12

The Parathyroid hormone..

- stimulates osteoclast activity

-increases the rate of calcium absorption

-decreases the rate of calcium excretion

-does stimulates osteoclast activity and decreases the rate of calcium excretion only

(all of these is the correct answer)

13

Cells that synthesize the organic commonest of the bone matrix are termed what?

Osteoblasts

14

Large, multinucleated cells that can dissolve the bony matrix are termed what?

Osteoclasts

15

The medullary cavity of bones contained what?

Marrow

16

The shaft of a long bone is called what?

The diaphysis

17

When sexual hormone production increases, bone growth does what?

Accelerates rapidly

18

The most abundant mineral in the human body is what?

Calcium

19

Elevated levels of calcium ion in the blood stimulates the secretion of the hormone what?

Calcitonin

20

The hormone calcitonin function to what?

Increase the rate of bone deposition

21

Which is greater? Blood calcium levels when parathyroid hormone is increased or decreased?

Blood calcium levels when parathyroid hormone is increased