Test 1

Question 1

What is hypoxia?

Answer 1

A condition in which there is a deficiency of oxygen in the tissues.

Question 2

True or False: Hyperventilation decreases blood carbon dioxide levels.

Answer 2

True

Question 3

Fill in the blank: The primary function of the __________ system is to transport oxygen and nutrients to cells.

Answer 3

circulatory

Question 4

What law states that the pressure of a gas is inversely proportional to its volume?

Answer 4

Boyle’s Law

Question 5

What is the role of the respiratory system in flight physiology?

Answer 5

To facilitate gas exchange, supplying oxygen and removing carbon dioxide.

Question 6

Which gas law explains the relationship between temperature, pressure, and volume of a gas?

Answer 6

Ideal Gas Law

Question 7

What are the symptoms of hypoxia?

Answer 7

Symptoms can include shortness of breath, confusion, dizziness, and cyanosis.

Question 8

True or False: The circulatory system is responsible for regulating body temperature.

Answer 8

True

Question 9

What is the primary cause of altitude sickness?

Answer 9

Hypoxia due to reduced atmospheric pressure at high altitudes.

Question 10

What is hyperventilation?

Answer 10

An increase in the rate and depth of breathing, often leading to reduced carbon dioxide levels.

Question 11

Fill in the blank: The __________ is the main organ responsible for gas exchange in the respiratory system.

Answer 11

lung

Question 12

Which blood component is primarily responsible for transporting oxygen?

Answer 12

Hemoglobin

Question 13

What is the effect of decreased atmospheric pressure on oxygen availability?

Answer 13

It reduces the amount of oxygen available for breathing.

Question 14

True or False: Blood circulation is essential for maintaining homeostasis.

Answer 14

True

Question 15

What is the term for the body’s adaptation to high altitudes?

Answer 15

Acclimatization

Question 16

What happens to the body during hypoxia?

Answer 16

Cells receive insufficient oxygen, which can impair their function.

Question 17

Fill in the blank: The __________ mechanism helps regulate blood flow and pressure.

Answer 17

cardiovascular

Question 18

What is the significance of the partial pressure of gases in respiration?

Answer 18

It determines the movement of gases across the alveolar membrane.

Question 19

True or False: Increased respiratory rate is a compensatory mechanism during hypoxia.

Answer 19

True

Question 20

What is the primary function of the arteries in the circulatory system?

Answer 20

To carry oxygenated blood away from the heart.

Question 21

Which physiological response occurs in the body when faced with hypoxia?

Answer 21

Increased heart rate and respiratory rate.

Question 22

Fill in the blank: The __________ system works closely with the respiratory system to supply oxygen.

Answer 22

circulatory

Question 23

What is the primary gas exhaled by the body?

Answer 23

Carbon dioxide

Question 24

What does the term ‘oxygen saturation’ refer to?

Answer 24

The percentage of hemoglobin binding sites in the bloodstream occupied by oxygen.

Question 25

True or False: Carbon dioxide is a waste product of cellular respiration.

Answer 25

True

Question 26

What is the primary role of the diaphragm in respiration?

Answer 26

To facilitate inhalation by contracting and expanding the thoracic cavity.

Question 27

What can prolonged hyperventilation lead to?

Answer 27

Respiratory alkalosis due to decreased carbon dioxide levels.