the mammalian heart Flashcards
(15 cards)
How is the heart structured?
It has 4 muscular chambers with an atrium and a ventricle on each side.
What does the atrium receive?
Low pressure blood from veins.
What do the ventricles move?
Blood at a high pressure into arteries.
What type of tissue do the atria have?
Thin.
What type of tissue do the ventricles have?
Thick.
What type of blood does the right side receive?
Deoxygenated.
Which blood vessel is connected to the right atrium?
Vena cava.
Which blood vessel does the right ventricle move blood into?
Pulmonary artery.
What type of blood does the left side receive?
Oxygenated.
Which blood vessel is connected to the left atrium?
Pulmonary veins.
Which blood vessel does the left ventricle move blood into?
Aorta.
Which chamber has the thickest muscle wall?
Left ventricle.
Why is the left ventricle’s muscle wall thick?
It produces a greater pressure because it has to pump the blood a greater distance.
What is the role of heart strings?
They prevent the AV valves from turning inside out or inverting.
