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Circulatory System Exam
2026
Master Exam Prep Bundle
(Verified Questions & Answers)
A+ Grade Guaranteed
, what is a circulatory system? how organisms deliver oxygen and nutrients to tissues
what is simple diffusion? passive movement of dissolved substances due to concentration gradient
_____ is fluid that allows gas exchange blood
in closed circulatory systems
what are the primary/true heart chambers? atria and ventricles
ventricles are (stronger/weaker) than atria - why? stronger; ventricles pump blood out to the body, while atria only pump blood into the
ventricle directly attached to it
what are the four primary chambers of four-chambered left and right atrium; left and right ventricle
hearts?
why does the blood not mix in four-chambered hearts? because there are two separate ventricles for the deoxygenated and oxygenated
blood
four-chambered hearts are _____ circulation hearts double
what type of animals have four-chambered hearts? birds and mammals (homeothermic chordates)
the right atrium accepts _____ deoxygenated
(oxygenated/deoxygenated) blood from the vena cava
blood pumps from the right atrium to the _____ through right ventricle; tricuspid (atrioventricular) valve
the _____
what is the right atrioventricular valve also known as and tricuspid valve; it has three cusps (flaps)
why? Mnemonic: The Right AV valve = TRicuspid valve
what are the largest veins in the human body and to what vena cava; the right atrium
do they connect?
what returns deoxygenated blood from above the heart? superior vena cava
what returns deoxygenated blood from below the heart? inferior vena cava
2026
Circulatory System Exam
2026
Master Exam Prep Bundle
(Verified Questions & Answers)
A+ Grade Guaranteed
, what is a circulatory system? how organisms deliver oxygen and nutrients to tissues
what is simple diffusion? passive movement of dissolved substances due to concentration gradient
_____ is fluid that allows gas exchange blood
in closed circulatory systems
what are the primary/true heart chambers? atria and ventricles
ventricles are (stronger/weaker) than atria - why? stronger; ventricles pump blood out to the body, while atria only pump blood into the
ventricle directly attached to it
what are the four primary chambers of four-chambered left and right atrium; left and right ventricle
hearts?
why does the blood not mix in four-chambered hearts? because there are two separate ventricles for the deoxygenated and oxygenated
blood
four-chambered hearts are _____ circulation hearts double
what type of animals have four-chambered hearts? birds and mammals (homeothermic chordates)
the right atrium accepts _____ deoxygenated
(oxygenated/deoxygenated) blood from the vena cava
blood pumps from the right atrium to the _____ through right ventricle; tricuspid (atrioventricular) valve
the _____
what is the right atrioventricular valve also known as and tricuspid valve; it has three cusps (flaps)
why? Mnemonic: The Right AV valve = TRicuspid valve
what are the largest veins in the human body and to what vena cava; the right atrium
do they connect?
what returns deoxygenated blood from above the heart? superior vena cava
what returns deoxygenated blood from below the heart? inferior vena cava
2026
