Circulatory System NEWEST ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+LATEST UPDATE 2026

Bootcamp.com - Circulatory System NEWEST
ACTUAL EXAM COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+\LATEST
UPDATE 2026


what type of animals have four-chambered hearts?


birds and mammals (homeothermic chordates)



the right atrium accepts _______ (oxygenated/deoxygenated) blood from the vena
cava


deoxygenated




blood pumps from the right atrium to the _____ through the _____


right ventricle; tricuspid (atrioventricular) valve

,what is the right atrioventricular valve also known as and why?


tricuspid valve; it has three cusps (flaps)


Mnemonic: The Right AV valve = TRicuspid valve




what are the largest veins in the human body and to what do they connect?


vena cava; the right atrium

,what returns deoxygenated blood from above the heart?


superior vena cava




what returns deoxygenated blood from below the heart?


inferior vena cava




what prevents backflow from the ventricles to the atria?


atrioventricular valves (AV valves)



AV valves close when which muscles contract?


papillary muscles

, what are the stringy tendons that attach papillary muscles to AV valves?


chordae tendineae




the right ventricle pumps deoxygenated blood to pulmonary arteries through
which valve?


pulmonary semilunar valve



semilunar valves have ____ cusps


3



_ __ valves ensure one-way flow of blood from ventricles to arteries


semilunar



the ____ take deoxygenated blood from the right ventricle to the lungs for gas
exchange


pulmonary arteries