Question 1

Which of the following best describes the sequence of neurons in an autonomic pathway, as shown in the first image?

Accepted Answer

A preganglionic neuron synapses with a postganglionic neuron in an autonomic ganglion, which then innervates the target tissue.

Question 2

In the sarcomere structure shown in the second image, which region contains only thick filaments?

Accepted Answer

H zone

Question 3

Which of the following statements about the autonomic nervous system is correct?

Accepted Answer

Most internal organs are under antagonistic control by both sympathetic and parasympathetic branches.

Question 4

Which structure in the sarcomere serves as the attachment site for thin filaments?

Accepted Answer

Z disk

Question 5

What is the correct order of events for muscle contraction starting from the arrival of an action potential at the neuromuscular junction?

Accepted Answer

ACh release → Action potential in muscle fiber → Calcium release from sarcoplasmic reticulum → Calcium binds troponin → Myosin binds actin

Question 6

Which of the following is a function of the hypothalamus in autonomic regulation?

Accepted Answer

Temperature control

Question 7

Which equation correctly represents the calculation of vital capacity ($$VC) in $$respiratory physiology?

Accepted Answer

$$VC = IRV + ERV + V$$

Question 8

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

Accepted Answer

No ATP is available to release myosin from actin.

Question 9

Which of the following is true regarding the pulmonary circulation?

Accepted Answer

It is a high-flow, low-pressure system.

Question 10

Which of the following best describes the function of surfactant in the lungs?

Accepted Answer

Decreases the surface tension of water in the alveoli

Question 11

A patient is experiencing increased airway resistance due to bronchoconstriction. Which branch of the autonomic nervous system is most likely responsible?

Accepted Answer

Parasympathetic

Question 12

Which of the following is a characteristic of cardiac muscle but not skeletal muscle?

Accepted Answer

Branching fibers connected by intercalated disks

Question 13

Which of the following best describes the role of the vagus nerve in the autonomic nervous system?

Accepted Answer

It contains about 75% of all parasympathetic fibers.

Question 14

Which of the following is true about the sliding filament theory of muscle contraction?

Accepted Answer

Actin and myosin filaments slide past each other, resulting in muscle contraction.

Question 15

Which of the following is the correct formula for total lung capacity ($$TLC$$)?

Accepted Answer

$$TLC = IRV + ERV + V + RV$$

Question 16

Which of the following is a function of the pons in autonomic regulation?

Accepted Answer

Urinary bladder control

Question 17

Which of the following best describes the function of the M line in the sarcomere?

Accepted Answer

Attachment site for thick filaments

Question 18

Which of the following is true regarding the direction of blood flow in the heart?

Accepted Answer

Blood flows from the right ventricle to the pulmonary trunk.

Question 19

Which of the following is a property of slow-twitch muscle fibers?

Accepted Answer

They are resistant to fatigue.

Question 20

Which of the following best describes the function of gap junctions in cardiac muscle?

Accepted Answer

They allow rapid transmission of electrical signals between cells.

Autonomic Nervous System, Muscle Physiology, Cardiovascular and Respiratory Mechanics: ANP College Study Guide

Study Guide - Practice Questions

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