Respiratory Physiology - Exam Prep Case Studies

Respiratory Physiology - Physiology Case Studies

Q. How does the body respond to increased carbon dioxide levels in the blood?

Solution

The body responds to increased carbon dioxide levels by increasing the respiratory rate to expel more CO2.

Correct Answer: B — Increased respiratory rate

Q. What is the primary gas transported by hemoglobin in the blood?

Solution

Hemoglobin primarily transports oxygen from the lungs to the tissues.

Correct Answer: A — Oxygen

Q. What is the primary purpose of surfactant in the alveoli?

Solution

Surfactant reduces surface tension in the alveoli, preventing their collapse and aiding in gas exchange.

Correct Answer: B — To prevent alveolar collapse

Q. What mechanism primarily drives the process of inhalation?

Solution

Inhalation is primarily driven by the contraction of the diaphragm, which increases the volume of the thoracic cavity.

Correct Answer: A — Diaphragm contraction

Q. What role do chemoreceptors play in respiratory physiology?

Solution

Chemoreceptors monitor the levels of oxygen and carbon dioxide in the blood, helping to regulate breathing.

Correct Answer: B — They monitor oxygen and carbon dioxide levels

Q. Which part of the brain is primarily responsible for regulating breathing?

Solution

The medulla oblongata is the part of the brain that regulates the rhythm and rate of breathing.

Correct Answer: C — Medulla oblongata

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