Q: Which of the following equations correctly represents the relationship between calcium homeostasis and parathyroid hormone (PTH) action?

$$\text{PTH} \rightarrow \uparrow \text{osteoclast activity} \rightarrow \uparrow [\text{Ca}^{2+}]_{\text{blood}}$$

Q: Which equation best represents the relationship between bone mass, calcium intake, and physical activity?

$$\text{Bone Mass} \propto \text{Calcium Intake} \times \text{Physical Activity}$$

Question 1

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

Accepted Answer

Production of hormones

Question 2

Which type of bone cell is responsible for breaking down bone matrix during bone remodeling?

Accepted Answer

Osteoclast

Question 3

A patient with a vitamin D deficiency is most likely to experience which of the following skeletal problems?

Accepted Answer

Rickets or osteomalacia

Question 4

Which of the following equations correctly represents the relationship between calcium homeostasis and parathyroid hormone (PTH) action?

Accepted Answer

$$	ext{PTH} ightarrow \uparrow 	ext{osteoclast activity} ightarrow \uparrow [	ext{Ca}^{2+}]_{	ext{blood}}$$

Question 5

A 10-year-old child fractures their femur. Which process will primarily repair the bone?

Accepted Answer

Endochondral ossification

Question 6

Which of the following best describes the role of red bone marrow?

Accepted Answer

Production of blood cells

Question 7

Which bone marking is correctly matched with its function?

Accepted Answer

Tuberosity – large rounded projection for muscle attachment

Question 8

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

Accepted Answer

Pathological fractures

Question 9

Which of the following statements about compact bone is TRUE?

Accepted Answer

It is organized into osteons (Haversian systems)

Question 10

During bone growth, which structure is responsible for lengthening of long bones?

Accepted Answer

Epiphyseal plate

Question 11

A 65-year-old woman presents with a hip fracture after a minor fall. Her bone mineral density is significantly reduced. Which hormone imbalance is most likely contributing to her condition?

Accepted Answer

Decreased estrogen

Question 12

Which of the following best describes the process of intramembranous ossification?

Accepted Answer

Bone forms directly from mesenchymal tissue

Question 13

Which equation best represents the relationship between bone mass, calcium intake, and physical activity?

Accepted Answer

$$	ext{Bone Mass} \propto 	ext{Calcium Intake} 	imes 	ext{Physical Activity}$$

Question 14

Which of the following is a real-life example of Wolff's Law?

Accepted Answer

Astronauts losing bone mass in microgravity

Question 15

A patient with chronic kidney disease develops hypocalcemia. Which skeletal system response is most likely to occur?

Accepted Answer

Increased bone resorption

Question 16

Which of the following best explains why elderly individuals are more prone to bone fractures?

Accepted Answer

Decreased bone density due to reduced osteoblast activity

Chapter 5: The Skeletal System - Essentials of Human Anatomy & Physiology

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드