Question 1

Which of the following best describes the role of osteoclasts in bone remodeling?

Accepted Answer

Osteoclasts break down bone matrix, releasing calcium and phosphate into the blood.

Question 2

A patient presents with a fracture in the diaphysis of the femur. Which part of the bone is affected?

Accepted Answer

The shaft of the bone

Question 3

Which hormone increases blood calcium levels by stimulating osteoclast activity?

Accepted Answer

Parathyroid hormone (PTH)

Question 4

During endochondral ossification, which tissue is replaced by bone?

Accepted Answer

Cartilage

Question 5

Which of the following is NOT a function of the axial skeleton?

Accepted Answer

Facilitating movement of the limbs

Question 6

A patient has a herniated intervertebral disc. What is the primary structure that has been damaged?

Accepted Answer

The nucleus pulposus

Question 7

Which of the following best explains why the hip joint is more stable than the shoulder joint?

Accepted Answer

The hip joint has a deeper socket and stronger ligaments.

Question 8

Which muscle is primarily responsible for flexion of the forearm at the elbow?

Accepted Answer

Biceps brachii

Question 9

Which of the following correctly matches the muscle fiber type with its characteristic?

Accepted Answer

Intermediate fibers: moderate resistance to fatigue, intermediate contraction speed

Question 10

Which equation best represents the relationship between force ($$F$$), cross-sectional area ($$A$$), and muscle tension ($$T) in $$skeletal muscle?

Accepted Answer

$$T = \frac{F}{A}$$

Question 11

A patient is unable to abduct their arm at the shoulder. Which muscle is most likely injured?

Accepted Answer

Deltoid

Question 12

Which of the following structures is found at the ends of muscles and connects muscle to bone?

Accepted Answer

Tendon

Question 13

Which of the following best describes the function of the sarcoplasmic reticulum in skeletal muscle cells?

Accepted Answer

It stores and releases calcium ions ($$Ca^{2+}) $$for muscle contraction.

Question 14

Which sequence correctly orders the events of muscle contraction starting from the arrival of the action potential?

Accepted Answer

Action potential travels down axon → Release of acetylcholine → Depolarization of sarcolemma → Release of $$Ca^{2+}$$ → $$Ca^{2+}$$ binds to troponin → Exposing of active sites on actin → Formation of cross-bridges → Power stroke → ATP causes cross-bridges to break → Myosin heads reactivated

Question 15

Which of the following is a real-life consequence of decreased bone density due to aging?

Accepted Answer

Increased susceptibility to bone fractures and slower healing

Question 16

Which muscle group is responsible for extension of the knee joint?

Accepted Answer

Quadriceps group

Question 17

Which of the following best describes the difference between true ribs and false ribs?

Accepted Answer

True ribs attach directly to the sternum via their own costal cartilage; false ribs either attach indirectly or not at all.

Question 18

A patient is diagnosed with scoliosis. Which of the following best describes this condition?

Accepted Answer

An abnormal lateral curvature of the vertebral column

Question 19

Which of the following equations correctly represents the calculation of muscle power ($$P) $$given force ($$F) $$and velocity ($$v$$)?

Accepted Answer

$$P = F 	imes v$$

Comprehensive Study Notes: Skeletal, Muscular, and Surface Anatomy (Chapters 5–12)

Study Guide - Practice Questions

Study Guide - Flashcards