Test 1 Flashcards
What is hypoxia?
A condition in which there is a deficiency of oxygen in the tissues.
True or False: Hyperventilation decreases blood carbon dioxide levels.
True
Fill in the blank: The primary function of the __________ system is to transport oxygen and nutrients to cells.
circulatory
What law states that the pressure of a gas is inversely proportional to its volume?
Boyle’s Law
What is the role of the respiratory system in flight physiology?
To facilitate gas exchange, supplying oxygen and removing carbon dioxide.
Which gas law explains the relationship between temperature, pressure, and volume of a gas?
Ideal Gas Law
What are the symptoms of hypoxia?
Symptoms can include shortness of breath, confusion, dizziness, and cyanosis.
True or False: The circulatory system is responsible for regulating body temperature.
True
What is the primary cause of altitude sickness?
Hypoxia due to reduced atmospheric pressure at high altitudes.
What is hyperventilation?
An increase in the rate and depth of breathing, often leading to reduced carbon dioxide levels.
Fill in the blank: The __________ is the main organ responsible for gas exchange in the respiratory system.
lung
Which blood component is primarily responsible for transporting oxygen?
Hemoglobin
What is the effect of decreased atmospheric pressure on oxygen availability?
It reduces the amount of oxygen available for breathing.
True or False: Blood circulation is essential for maintaining homeostasis.
True
What is the term for the body’s adaptation to high altitudes?
Acclimatization
What happens to the body during hypoxia?
Cells receive insufficient oxygen, which can impair their function.
Fill in the blank: The __________ mechanism helps regulate blood flow and pressure.
cardiovascular
What is the significance of the partial pressure of gases in respiration?
It determines the movement of gases across the alveolar membrane.
True or False: Increased respiratory rate is a compensatory mechanism during hypoxia.
True
What is the primary function of the arteries in the circulatory system?
To carry oxygenated blood away from the heart.
Which physiological response occurs in the body when faced with hypoxia?
Increased heart rate and respiratory rate.
Fill in the blank: The __________ system works closely with the respiratory system to supply oxygen.
circulatory
What is the primary gas exhaled by the body?
Carbon dioxide
What does the term ‘oxygen saturation’ refer to?
The percentage of hemoglobin binding sites in the bloodstream occupied by oxygen.
True or False: Carbon dioxide is a waste product of cellular respiration.
True
What is the primary role of the diaphragm in respiration?
To facilitate inhalation by contracting and expanding the thoracic cavity.
What can prolonged hyperventilation lead to?
Respiratory alkalosis due to decreased carbon dioxide levels.
