structure And Function Of The Cardio-repiratory System Flashcards
What is the primary function of the respiratory system?
To facilitate the exchange of oxygen and carbon dioxide.
True or False: The diaphragm contracts during inhalation.
True
Fill in the blank: The __________ are the small air sacs in the lungs where gas exchange occurs.
alveoli
What is the role of red blood cells?
To transport oxygen from the lungs to the body and carbon dioxide from the body to the lungs.
Multiple Choice: Which blood vessel carries oxygenated blood away from the heart?
Aorta
What is the function of valves in the heart?
To prevent the backflow of blood.
True or False: The right atrium receives oxygenated blood from the body.
False
What are the two main types of blood vessels?
Arteries and veins.
Fill in the blank: The __________ is the chamber of the heart that pumps blood to the lungs.
right ventricle
What is the average resting heart rate for a healthy adult?
60 to 100 beats per minute.
Multiple Choice: Which part of the heart is responsible for pumping oxygenated blood to the body?
Left ventricle
True or False: Veins have thicker walls than arteries.
False
What is the term for the phase of the heartbeat when the heart muscle relaxes?
Diastole
Fill in the blank: Blood that is rich in oxygen is called __________ blood.
oxygenated
What is the primary gas exchanged in the lungs during respiration?
Oxygen
True or False: The pulmonary artery carries deoxygenated blood to the lungs.
True
What is the main purpose of capillaries?
To allow for the exchange of substances between blood and tissues.
Fill in the blank: The __________ is the largest artery in the body.
aorta
What is the name of the process by which oxygen is transported from the lungs to the body’s tissues?
Oxygen transport
Multiple Choice: What is the function of the septum in the heart?
To separate the left and right sides of the heart.
True or False: The heart has four chambers.
True
What is the main function of the circulatory system?
To transport nutrients, gases, hormones, and waste products throughout the body.
Fill in the blank: The __________ returns blood from the upper body to the heart.
superior vena cava
What is the term for the volume of blood pumped by the heart in one minute?
Cardiac output
Multiple Choice: Which type of blood vessel carries blood back to the heart?
Veins
True or False: Oxygen diffuses from the blood into the alveoli during gas exchange.
False
What happens to the diaphragm during exhalation?
It relaxes and moves upward.
What is the primary function of the respiratory system?
To facilitate the exchange of gases, primarily oxygen and carbon dioxide.
True or False: The pathway of air begins at the nose or mouth.
True
Fill in the blank: The __________ are tiny air sacs in the lungs where gas exchange occurs.
alveoli
What is the role of the diaphragm in breathing?
The diaphragm contracts to create a vacuum that draws air into the lungs.
Multiple Choice: Which gas is primarily inhaled during respiration? A) Carbon Dioxide B) Nitrogen C) Oxygen D) Argon
C) Oxygen
What process describes the movement of oxygen from the alveoli into the blood?
Diffusion
True or False: Carbon dioxide is transported back to the lungs primarily in red blood cells.
True
Fill in the blank: The __________ is the tube that carries air to the lungs.
trachea
What is the term for the total volume of air that can be inhaled and exhaled in one breath?
Tidal volume
