Biology Questions and Answers
blood to the lungs (the right ventricle
task) is easier (than pumping blood to thneeds less pressure)e other tissues (^)
of the body (the left ventricle task).
- What is vena cava? Which
type of blood circulates within
the vena cava?
The vena cava are either of two largveins that debouch into the right atrium.e (^)
The superior vthat comes from the head, the superiorena cava drains all blood (^)
limbs, thof the trunk. The inferior vee neck and the superior portionna cava
carries blood drained from the inferior
portion limbs. of the trunk and the inferior
Venous blood circulates within thcava. e vena
- Which is the first (human)
heart chamber into which
blood enters? Where does the
blood go after passing that
chamber? What is the name of
the valve that separates the
compartments? Why is that
valve necessary?
The venous btissues arrives ilood that comes fn the right atrium of rom ththee (^)
heart. From the right atrium the blood
goes to that separates ththe right ve right ventricle fromentricle. The valve (^)
the right atrium is thvalvular system made of three leaflets).e tricuspid valve (a (^)
The tricuspid valve is necessary to
prevent returning of blood to the right
atrium during systole (contraction of
ventricles).
- What is the function of the
right ventricle? To where does
the right ventricle pump the
venous blood?
The function of the right ventricle is to
get venous blood from thand pump the blood to be oxygenated ine right atrium (^)
the lungs.
The venous bright ventricle to the lungs by thelood is carried from the
pulmonary artery aramifications. nd their
- What is the valve that
separates the right ventricle
from the pulmonary artery?
Why is that valve important?
The valve that seventricle and the base of the pulmonaryparates the right (^)
artery is the pulmonary valve. The
pulmonary valve is impblood from the pulmonary circulation toortant to prevent
flow back to the heart during diastole.
- Do the arteries that carry
blood from the heart to the
lungs contain arterial or
venous blood? What happens
to the blood when it passes
through the lungs?
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