Biology Questions and Answers
Arteries of the pulmonary circulation are
arteries that carry venous barterial blood. lood and not
When the blood passes within talveolar capillaries of the lungs he
hematosis (oxygenation) occurs and
carbon dioxide is relexterior. eased to the
- What and how many are
the pulmonary veins?
The pulmonary vpulmonary circulation.eins ar They are vesselse part of the (^)
that carry oxyfrom the lungs to gen-rich (arterial) bthe heart. There arelood (^)
four pulmonary veins, two that drain
blood from the that drain the left lung. The pulmonaryright lung and other two
veins debringing arterialbouch into the left atrium blood to the heart. (^)
Although they are veins they carry
arterial blood and not venous blood.
- To which heart chamber
does the blood go after
leaving the left atrium? What
is the valve that separates
these compartments?
The arterial blothe lungs to the left atrium pod that has come asses thenfrom (^)
to the left ventricle.
The valve between the left ventricle and
the left atrium is the bicuspid (two leaflets) valve. The mitralmitral valve, a (^)
valve is important because it prevents
the regurgitation of blood to the left
atrium during systole (contraction of the
ventricles).
- What is the function of the
left ventricle? Where does the
blood go after leaving the left
ventricle?
The function of the left ventricle is to
get blood from the pump the blood under high pressure toleft atrium and to (^)
the systemic circulation. After leaving
the left ventricle the blood enters thaorta, the largest artery of the body.e
- What is the valve that
separates the aorta from the
heart? What is the importance
of that valve?
The valve bthe aorta is thetween the left ventricle ane aortic valve. The aorticd
valve prevents the retrograde flux of
blood to thdiastole. Besides, as the left ventricle duringe aortic valve (^)
closes during diastole, part of the
retrograthrough the coronary ostiade blood flux is imp (openings),elled (^)
orifices located in the aorta wall just
after the valvular inscontiguous to the coronary ertion ancirculationd (^)
responsible for the blood supply of the
cardiac tissues.
- Is the ventricle lumen
larger during systole or during
diastole?
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