Inhalation And Exhalation

Question 1

What is the primary function of the respiratory system?

Answer 1

To facilitate gas exchange, primarily oxygen intake and carbon dioxide removal.

Question 2

True or False: The diaphragm contracts during inhalation.

Answer 2

True

Question 3

Fill in the blank: The __________ is the main muscle involved in the process of breathing.

Answer 3

diaphragm

Question 4

What are the two main processes of respiration?

Answer 4

Inhalation and exhalation.

Question 5

Which structure prevents food from entering the trachea?

Answer 5

The epiglottis.

Question 6

Multiple Choice: Which of the following is NOT a part of the respiratory system? A) Lungs B) Heart C) Trachea D) Bronchi

Answer 6

B) Heart

Question 7

What is the role of the alveoli?

Answer 7

To provide a large surface area for gas exchange.

Question 8

True or False: Exhalation is primarily an active process.

Answer 8

False

Question 9

Fill in the blank: The __________ are tiny air sacs where gas exchange occurs.

Answer 9

alveoli

Question 10

What triggers the inhalation process?

Answer 10

The contraction of the diaphragm and intercostal muscles, which decreases thoracic pressure.

Question 11

Multiple Choice: Which gas is primarily expelled during exhalation? A) Oxygen B) Nitrogen C) Carbon dioxide D) Helium

Answer 11

C) Carbon dioxide

Question 12

What is the primary function of the nasal cavity?

Answer 12

To filter, warm, and humidify the air before it enters the lungs.

Question 13

True or False: The trachea is lined with cilia that help to trap particles.

Answer 13

True

Question 14

What happens to the volume of the thoracic cavity during inhalation?

Answer 14

It increases.

Question 15

Fill in the blank: The __________ connects the throat to the lungs.

Answer 15

trachea

Question 16

What is tidal volume?

Answer 16

The amount of air inhaled or exhaled in a single breath.

Question 17

Multiple Choice: Which part of the brain regulates the rate of breathing? A) Cerebellum B) Medulla oblongata C) Corpus callosum D) Thalamus

Answer 17

B) Medulla oblongata

Question 18

What is the function of the bronchi?

Answer 18

To distribute air from the trachea into each lung.

Question 19

True or False: Oxygen is primarily transported in the blood dissolved in plasma.

Answer 19

False

Question 20

Fill in the blank: The __________ are the main sites of gas exchange in the lungs.

Answer 20

alveoli

Question 21

What is the difference between external and internal respiration?

Answer 21

External respiration refers to gas exchange between the lungs and blood; internal respiration refers to gas exchange between blood and body tissues.

Question 22

Multiple Choice: What happens to the diaphragm during exhalation? A) It contracts B) It relaxes C) It stays the same D) It expands

Answer 22

B) It relaxes

Question 23

What is the role of surfactant in the lungs?

Answer 23

To reduce surface tension in the alveoli and prevent collapse.

Question 24

True or False: The respiratory system is involved in regulating blood pH.

Answer 24

True

Question 25

Fill in the blank: The __________ is a flap of tissue that prevents food from entering the trachea during swallowing.

Answer 25

epiglottis

Question 26

What is the purpose of the pleura?

Answer 26

To reduce friction between the lungs and the chest wall during breathing.

Question 27

Multiple Choice: Which of the following structures is responsible for voice production? A) Lungs B) Trachea C) Larynx D) Pharynx

Answer 27

C) Larynx