Question 1

Which of the following best describes the function of menisci in synovial joints?

Accepted Answer

They are fluid-filled packets that reduce the effects of friction on joints.

Question 2

During vigorous physical activity, which pathway is responsible for the initial production of ATP in muscle cells?

Accepted Answer

Anaerobic glycolysis

Question 3

Which of the following best summarizes the steps of endochondral ossification?

Accepted Answer

I. Bone collar forms around diaphysis; II. Cartilage in diaphysis calcifies; III. Periosteal bud invades and spongy bone forms; IV. Diaphysis elongates and medullary cavity forms; V. Epiphyses ossify

Question 4

Which of the following statements about the H zone during muscle contraction is correct?

Accepted Answer

The H zone decreases in length until disappearing.

Question 5

A patient presents with a fracture at the epiphyseal plate. What is the most likely long-term consequence if the injury is not properly managed?

Accepted Answer

The bone may stop growing in length, leading to limb length discrepancies.

Question 6

Which of the following best describes the role of osteoprogenitor cells?

Accepted Answer

They are stem cells that can differentiate into osteoblasts.

Question 7

Which of the following is a function of the skeletal system?

Accepted Answer

Hematopoiesis

Question 8

During muscle contraction, which ion binds to troponin to reveal the myosin head binding sites on the G-actin?

Accepted Answer

Ca$$ ^{2+} $$

Question 9

Which of the following best explains why rigor mortis occurs after death?

Accepted Answer

The lack of ATP means that myosin heads cannot detach from actin, causing muscles to remain in a contracted position.

Question 10

Which of the following is NOT a function of smooth muscle tissue?

Accepted Answer

Lacks thick and thin filaments

Question 11

A runner is sprinting at maximum effort. Which statement about ATP production is correct?

Accepted Answer

At peak activity, most ATP is obtained via the anaerobic pathway producing lactic acid as a byproduct of glycolysis.

Question 12

Which of the following best describes the application of Wolff's Law?

Accepted Answer

An individual who spent their life weight training is less likely to suffer from easily broken bones.

Question 13

Which of the following statements about sarcomeres is incorrect?

Accepted Answer

The H-zone is the span of the overlap between thin and thick filaments.

Question 14

Which of the following is the correct order of the steps in fracture repair?

Accepted Answer

I. Hematoma formation; II. Fibrocartilaginous callus; III. Bony callus; IV. Bone remodeling

Question 15

Which of the following is a unique feature of cardiac muscle tissue?

Accepted Answer

Contains intercalated disks

Question 16

Which of the following best describes the function of the perimysium?

Accepted Answer

Encapsulates fascicles (bundles of muscle fibers)

Question 17

Which of the following is a correct statement about the role of Ca$$ ^{2+}  in $$the neuromuscular junction (NMJ)?

Accepted Answer

Ca$$ ^{2+} $$ influx triggers the release of neurotransmitter into the synaptic cleft.

Question 18

Which of the following is a function of compact bone?

Accepted Answer

Support and protection

Question 19

Which of the following best describes the cruciate ligaments of the knee?

Accepted Answer

Examples of intracapsular ligaments

Question 20

Which of the following statements about bone growth is correct?

Accepted Answer

All bones exhibit appositional growth, aside from long bones that grow longitudinally.

Musculoskeletal System: Structure, Function, and Physiology Study Guide

Guida di studio - Domande di pratica

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