$9\ \text{mg}/100\ \text{ml} \leq [Ca^{2+}] \leq 11\ \text{mg}/100\ \text{ml}$

Question 1

Which of the following bones is formed primarily through intramembranous ossification?

Accepted Answer

Clavicle

Question 2

During endochondral ossification, what is the first major event that occurs in the development of a long bone?

Accepted Answer

Formation of a bone collar around the diaphysis

Question 3

Which hormone is released in response to low blood calcium levels and stimulates osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 4

A patient presents with a bone fracture where the bone is crushed, as seen in osteoporotic vertebrae. What type of fracture is this?

Accepted Answer

Compression fracture

Question 5

Which of the following best describes the process of appositional growth in bones?

Accepted Answer

Bones thicken due to osteoblast activity beneath the periosteum

Question 6

A child is diagnosed with pituitary dwarfism. Which of the following best explains the underlying cause?

Accepted Answer

Lack of growth hormone resulting in normal proportions but short stature

Question 7

Which of the following is a direct result of osteoclast activity during bone remodeling?

Accepted Answer

Resorption of bone and release of calcium into the blood

Question 8

According to Wolff’s Law, which of the following scenarios would most likely result in increased bone density?

Accepted Answer

A weightlifter regularly training with heavy loads

Question 9

Which of the following is the correct sequence of events in the healing of a bone fracture?

Accepted Answer

Hematoma forms, fibrocartilaginous callus forms, bony callus forms, bone remodeling

Question 10

A patient with osteoporosis is at increased risk for which of the following?

Accepted Answer

Pathological fractures due to decreased bone density

Question 11

Which of the following best describes the role of the epiphyseal plate in long bone growth?

Accepted Answer

It allows for interstitial growth, lengthening the bone during childhood and adolescence

Question 12

Which of the following equations correctly represents the normal range of calcium homeostasis in blood?

Accepted Answer

$9\ 	ext{mg}/100\ 	ext{ml} \leq [Ca^{2+}] \leq 11\ 	ext{mg}/100\ 	ext{ml}$

Question 13

Which of the following is a distinguishing feature of intramembranous ossification compared to endochondral ossification?

Accepted Answer

It forms bones directly from mesenchymal tissue

Question 14

A patient with hypercalcemia would most likely experience which of the following symptoms?

Accepted Answer

Nonresponsiveness of nerves and muscles

Question 15

Which of the following best explains why postmenopausal women are at higher risk for osteoporosis?

Accepted Answer

Decreased estrogen levels leading to increased bone resorption

Question 16

Which of the following statements about bone remodeling is correct?

Accepted Answer

Bone remodeling involves both deposition by osteoblasts and resorption by osteoclasts

Question 17

Which of the following is a common cause of achondroplastic dwarfism?

Accepted Answer

Failure of cartilage growth in the metaphysis due to a spontaneous mutation

Question 18

Which of the following best describes the fate of hyaline cartilage after the completion of endochondral ossification in a long bone?

Accepted Answer

It remains only in the epiphyseal plates and articular cartilages

Question 19

Which of the following is the correct formula for calculating the rate of bone turnover if 5% of bone is recycled weekly?

Accepted Answer

$	ext{Turnover rate} = \frac{5}{100} 	imes 52 = 2.6$ 	ext{times per year}$

Bone Development, Growth, and Remodeling: Study Notes for ANP College Students

Study Guide - Practice Questions