Flashcards in Cardiovascular Deck (99)
inner linning of the heart
top layer of the heart
sac holding the heart
atria does what?
receives the blood
what does the right atria do?
deoxygenated blood from venae cavae
what does the left atria?
oxygenated blood from the lungs
what do the ventricles do?
pump blood from the heart
what does the right ventricle do (pulmonary circulation)?
pumps blood to lungs for oxygenation
what does the left atria do (systemic circulation)?
pumps blood through the aorta to the body systems
what do heart valves prevent?
backflow; regurgitation of blood
from right ventricle into right atrium
bicuspid (mitral) valve:
from the left ventricle into the left atrium
from the pulmonary artery into right ventricle
from aorta into left ventricle
arteries do what and carry what (strong muscular wall)?
carry blood away from the heart; and carry oxygenated blood
join arterial system; have thin walls to allow exchange of blood and body tissues; vessels composed of endothelial cells
what do the veins do and what does it carry (contain valves to return blood)?
carry blood to the heart; carry deoxygenated blood
what is the main function of the heart?
To propel blood for the transport of respiratory gases, nutrients, wastes, and immune substances in the body
what structures prevent backflow of blood?
Heart valves—the bicuspid, tricuspid, aortic valve, and pulmonic valve
list the tree major types if blood vessels and the function of each?
Arteries carry blood away from the heart; veins carry blood to the heart; capillaries join the arterial system with the venous system.
Which blood vessels contains valves? why?
Veins possess valves to prevent backflow of blood because it commonly must travel against gravity to return to the heart.
list four chambers of the heart?
Right atrium, right ventricle, left atrium, left ventricle
How are the pulmonary artery and pulmonary vein different from other arteries and veins of the body?
The pulmonary artery carries deoxygenated blood; the pulmonary vein carries oxygenated blood.