Q: Which equation best represents the homeostatic regulation of blood calcium levels involving parathyroid hormone (PTH) and calcitonin?

$$ \text{Blood Ca}^{2+} = \text{PTH} \times \text{Osteoclast Activity} - \text{Calcitonin} \times \text{Osteoblast Activity} $$

Q: Which equation best represents the relationship between bone mass and mechanical stress?

$$ \text{Bone Mass} = \text{Initial Mass} + k \times \text{Mechanical Load} $$

Question 1

Which of the following best describes the difference between intramembranous and endochondral ossification?

Accepted Answer

Intramembranous ossification forms flat bones directly from mesenchymal tissue, while endochondral ossification forms long bones by replacing cartilage with bone.

Question 2

A patient presents with elevated blood calcium levels. Which hormone is most likely to be secreted in response, and what is its effect on bone tissue?

Accepted Answer

Calcitonin; decreases osteoclast activity and promotes calcium deposition in bone.

Question 3

Which of the following is NOT a function of the skeletal system?

Accepted Answer

Production of hormones

Question 4

During bone fracture repair, which structure forms first at the site of injury?

Accepted Answer

Hematoma

Question 5

Which bone marking is defined as a round articular projection, often found at joints?

Accepted Answer

Condyle

Question 6

A child’s long bone is still growing. Which structure is responsible for this longitudinal growth?

Accepted Answer

Epiphyseal plate

Question 7

Which equation best represents the homeostatic regulation of blood calcium levels involving parathyroid hormone (PTH) and calcitonin?

Accepted Answer

$$ 	ext{Blood Ca}^{2+} = 	ext{PTH} 	imes 	ext{Osteoclast Activity} - 	ext{Calcitonin} 	imes 	ext{Osteoblast Activity} $$

Question 8

Which of the following best describes the histological difference between compact and spongy bone?

Accepted Answer

Compact bone is organized into osteons (Haversian systems), while spongy bone contains trabeculae and lacks osteons.

Question 9

Which bone is classified as a sesamoid bone?

Accepted Answer

Patella

Question 10

A newborn’s skull contains fontanelles. Which is the correct location for the anterior fontanelle?

Accepted Answer

Between the frontal and parietal bones

Question 11

Which of the following bones is part of the axial skeleton?

Accepted Answer

Sternum

Question 12

Which structural feature distinguishes the cervical vertebrae from other vertebrae?

Accepted Answer

Presence of transverse foramen

Question 13

Which of the following is a paired cranial bone?

Accepted Answer

Parietal bone

Question 14

Which process occurs during bone construction and destruction as a homeostatic mechanism?

Accepted Answer

Osteoclasts resorb bone and osteoblasts deposit new bone, maintaining balance.

Question 15

Which equation best represents the relationship between bone mass and mechanical stress?

Accepted Answer

$$ 	ext{Bone Mass} = 	ext{Initial Mass} + k 	imes 	ext{Mechanical Load} $$

Question 16

Which bone marking is a shallow depression, often serving as a site for muscle attachment?

Accepted Answer

Fossa

Question 17

Which of the following is a structural difference between the male and female pelvis?

Accepted Answer

The female pelvis is broader and has a wider pelvic inlet.

Question 18

Which bone is part of the appendicular skeleton?

Accepted Answer

Scapula

Question 19

Which of the following best describes the location of the sphenoidal sinus?

Accepted Answer

Within the sphenoid bone, behind the nasal cavity

Question 20

Which step occurs LAST in the repair of a bone fracture?

Accepted Answer

Remodeling of bone

ANP Exam #3 Review: Bone Tissue and Skeletal System Study Guidance

Study Guide - Practice Questions

Study Guide - Flashcards