Chapter 22

Question 1

Which section of the pharynx contains the palatine tonsils?

Answer 1

Oropharynx

Question 2

Which of the following lung volumes or capacities remains in the lungs after a maximal exhalation?

Answer 2

Residual volume

Question 3

Control of breathing originates in the:

Answer 3

Medulla oblongata

Question 4

Which of the following is NOT a function of the respiratory system?

Answer 4

Regulation of blood glucose levels

Question 5

Which structure is part of the conducting zone of the respiratory system?

Answer 5

Trachea

Question 6

What is the primary purpose of the conchae in the nasal cavity?

Answer 6

Water and moisten upcoming air

Question 7

What occurs when the arytenoid cartilages rotate to close the vocal folds?

Answer 7

Phonation (speech production)

Question 8

According to Boyle’s Law, what happens when thoracic volume increases?

Answer 8

Intrapulmonary pressure decreases, leading to inhalation

Question 9

The respiratory epithelium contains goblet cells. What is their primary function?

Answer 9

Trap dirt and pathogens in mucus

Question 10

What percentage of oxygen in the blood is transported bound to hemoglobin?

Answer 10

98.5%

Question 11

Which brain region regulates deep breathing patterns?

Answer 11

Ventral respiratory group

Question 12

In the lungs, oxygen diffuses from alveoli into pulmonary capillaries because:

Answer 12

The oxygen partial pressure is higher in alveoli than capillaries

Question 13

Why does fetal hemoglobin have a greater affinity for oxygen than adult hemoglobin?

Answer 13

To facilitate oxygen binding at lower partial pressures