Question 1

Which of the following bones is classified as a flat bone?

Accepted Answer

sternum

Question 2

If a bone sample shows lamellae not arranged in osteons, the sample is most likely from which region?

Accepted Answer

epiphysis

Question 3

Which characteristics apply to spongy bone in osseous tissue?

Accepted Answer

red bone marrow, canaliculi, no osteons

Question 4

A child who enters puberty several years later than average is generally taller as an adult. Why?

Accepted Answer

All of the above are correct.

Question 5

Why do people lose height as they age?

Accepted Answer

Osteopenia and thinning of intervertebral discs cause loss of height.

Question 6

During intramembranous ossification, which type of tissue is replaced by bone?

Accepted Answer

mesenchymal connective tissue

Question 7

In endochondral ossification, what is the original source of osteoblasts?

Accepted Answer

cells of the inner layer of the perichondrium

Question 8

How is bone remodeling accomplished?

Accepted Answer

Osteoclasts break down matrix, while osteoblasts form new bone matrix.

Question 9

Which of the following is TRUE concerning the periosteum?

Accepted Answer

All of the above are correct.

Question 10

Which of the following describes osteoprogenitor cells?

Accepted Answer

divide to produce daughter cells that differentiate into osteoblasts

Question 11

Bone may weaken when collagen is not made correctly. This is mainly caused by inadequate:

Accepted Answer

vitamin C intake

Question 12

If the activity of osteoblasts exceeds the activity of osteoclasts in a bone, how will the mass of the bone be affected?

Accepted Answer

more mass

Question 13

Bones forming in abnormal locations are known as:

Accepted Answer

heterotopic

Question 14

Why is osteoporosis more common in older women than in older men?

Accepted Answer

Declining estrogen levels lead to decreased calcium deposition.

Question 15

Put the terms in order that describe endochondral ossification:
1. Blood vessels grow into matrix, and cells give rise to osteoblasts that form superficial bone.
2. Chondrocytes enlarge and die, leaving struts within the cavity.
3. Remodeling occurs as bone gets thicker and establishes secondary ossification centers.
4. As blood vessels invade the diaphysis, a primary ossification is established.

Accepted Answer

2, 1, 4, 3

Question 16

A 7-year-old child has a pituitary tumor involving the cells that secrete growth hormone (GH), resulting in increased levels of GH. How will this condition affect the child’s growth?

Accepted Answer

The individual will be taller.

Question 17

Calcitriol begins its synthesis from a steroid produced in:

Accepted Answer

skin

Question 18

A balance between which two hormones is essential for maintaining calcium homeostasis?

Accepted Answer

calcitonin and parathyroid hormone

Question 19

How does calcitonin help lower the calcium ion concentration of blood?

Accepted Answer

both A and B

Study Guidance for Chapter 6: Bones and Bone Structure (ANP)

Study Guide - Practice Questions

Study Guide - Flashcards