Pulmonary Ventilation and Gas Exchange: Online Quizzes for Anatomy and Physiology for Sport

Question 1

What is the approximate partial pressure of oxygen in the alveoli?

Accepted Answer

100 mmHg

Answer

40 mmHg

Answer

150 mmHg

Answer

50 mmHg

Question 2

What is the primary function of hemoglobin in oxygen transport within the bloodstream?

Accepted Answer

To bind to oxygen and facilitate its transport

Answer

To release oxygen into the tissues

Answer

To regulate blood pH levels

Answer

To transport carbon dioxide

Question 3

What is the primary mechanism by which carbon dioxide is removed from the blood and exhaled?

Accepted Answer

Diffusion

Answer

Active transport

Answer

Osmosis

Answer

Filtration

Question 4

What is the term for the volume of air that can be forcibly exhaled after a maximal inhalation?

Accepted Answer

Vital capacity

Answer

Tidal volume

Answer

Functional residual capacity

Answer

Residual volume

Question 5

Which muscle is primarily responsible for inhalation?

Accepted Answer

Diaphragm

Answer

Intercostal muscles

Answer

Abdominal muscles

Answer

Trapezius

Question 6

Which gas is mainly transported in the blood bound to haemoglobin?

Accepted Answer

Oxygen

Answer

Carbon dioxide

Answer

Nitrogen

Answer

Carbon monoxide

Question 7

What is the primary function of surfactant in the lungs?

Accepted Answer

To reduce surface tension and prevent alveolar collapse

Answer

To facilitate gas exchange across the alveolar membrane

Question 8

What process removes carbon dioxide from the blood in the lungs?

Accepted Answer

Diffusion

Answer

Osmosis

Question 9

Which of the following is the definition of vital capacity?

Accepted Answer

The maximum volume of air that can be exhaled after a maximal inhalation

Answer

The volume of air that is exchanged during normal breathing

Question 10

What is the Bohr effect?

Accepted Answer

The decrease in affinity of haemoglobin for oxygen in the presence of increased carbon dioxide

Answer

The increase in affinity of haemoglobin for oxygen in the presence of increased temperature

Question 11

Pulmonary ventilation involves the exchange of air between the:

Accepted Answer

Lungs and the environment.

Answer

Lungs and the heart.

Answer

Bloodstream and the lungs.

Answer

Nose and the pharynx.

Question 12

Which of the following is the primary function of the respiratory system?

Accepted Answer

To facilitate the exchange of gases between the body and the external environment.

Answer

To filter blood and remove waste products.

Answer

To regulate body temperature and blood pressure.

Answer

To produce hormones that control growth and development.

Question 13

Which of the following is NOT a component of the respiratory tract?

Accepted Answer

Esophagus

Answer

Nasal cavity

Answer

Trachea

Answer

Bronchi

Question 14

The process by which oxygen and carbon dioxide are exchanged across the respiratory membrane is called:

Accepted Answer

Diffusion

Answer

Respiration

Answer

Osmosis

Answer

Filtration

Question 15

The primary muscle responsible for inhalation is the:

Accepted Answer

Diaphragm

Answer

Intercostal muscles

Answer

Abdominal muscles

Answer

Pectoralis major

Question 16

Which of the following is NOT a function of the lungs?

Accepted Answer

Blood filtration

Answer

Gas exchange

Answer

pH regulation

Answer

Production of surfactant

Question 17

Which of the following best describes emphysema?

Accepted Answer

Destruction of alveoli, reducing gas exchange surface area

Answer

Reversible condition

Answer

Excessive mucus production in airways

Question 18

Identify the muscle primarily responsible for inspiration during quiet breathing.

Accepted Answer

Diaphragm

Answer

Sternocleidomastoid

Answer

Abdominal muscles

Answer

Intercostal muscles

Question 19

Which of the following is the primary function of hemoglobin?

Accepted Answer

Oxygen transport

Answer

Blood pressure regulation

Answer

pH regulation

Answer

Carbon dioxide transport

Question 20

Which of the following structures is NOT a respiratory control center?

Accepted Answer

Thalamus

Answer

Carotid bodies

Answer

Medulla oblongata

Answer

Pons

Question 21

How does increasing tidal volume affect alveolar ventilation?

Accepted Answer

Increases it

Answer

The effect depends on breathing rate

Answer

Decreases it

Answer

Has no effect on it

Question 22

Identify a major contributing factor to the development of emphysema.

Accepted Answer

Smoking

Answer

Obesity

Answer

Air pollution

Answer

Allergies

Question 23

Which structure connects the larynx to the lungs?

Accepted Answer

Trachea

Answer

Alveoli

Answer

Pleura

Answer

Bronchi

Question 24

State the fundamental purpose of the respiratory system.

Accepted Answer

Gas exchange

Answer

Fluid balance

Answer

Temperature regulation

Answer

pH regulation