Cardiovascular System Flashcards
What does the circulatory system do?
- Transports oxygen, nutrients & water
- Removes waste
- Regulates temperature
- Fights disease.
What are the 3 main parts of the circulatory system?
Heart, blood, blood vessels
What does the right atrium do?
Receives deoxygenated blood from the body.
What does the right ventricle do?
Pumps deoxygenated blood to the lungs.
What does the left atrium do?
Receives oxygenated blood from the lungs.
What does the left ventricle do?
Pumps oxygenated blood to the body.
What does the tricuspid valve do?
Prevents backflow between right atrium & right ventricle.
What does the mitral valve do?
Prevents backflow between left atrium & left ventricle.
Which artery carries deoxygenated blood?
Pulmonary artery (right ventricle → lungs)
Which vein carries oxygenated blood?
Pulmonary vein (lungs → left atrium)
What do arteries do?
Carry oxygen-rich blood away from the heart.
What do veins do?
Carry oxygen-poor blood back to the heart.
What do capillaries do?
Allow gas & nutrient exchange between blood & cells.
How do you calculate max heart rate?
220 - your age
What happens to heart rate during exercise?
Increases to supply more oxygen to muscles.
What is stroke volume?
Amount of blood pumped per heartbeat.
What is cardiac output?
Heart rate × stroke volume (blood pumped per minute).
What are the 4 components of blood?
- Red blood cells (oxygen transport)
- White blood cells (fight disease)
- Plasma (carries nutrients/waste)
- Platelets (help clot blood)
