Question

Describe the hearts functioning with labelled diagram?

Answer 1

$\underline{\blacksquare\:\:\footnotesize{\red{\text{Sectional View' of Human Heart :}}}}$

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$\underline{\blacksquare\:\:\footnotesize{\red{\text{Functioning of Heart :}}}}$

$\footnotesize{\bf{1)}\:\text{The heart is an essential pumping organ in the}}$

$\footnotesize{\text{cardiovascular system where the right heart pumps }}$

$\footnotesize{\text{deoxygenated blood (returned from body tissues) to}}$

$\footnotesize{\text{the lungs for gas exchange,while the left heart pumps}}$

$\footnotesize{\text{oxygenated blood (returned from the lungs) to the}}$

$\footnotesize{\text{tissues cells for sustaining cellular respiration.}}$

$\footnotesize{\bf{2)}\:\text{Attached to the heart is blood vessels that}}$

$\footnotesize{\text{transport blood in various circulation pathways-}}$

$\footnotesize{\red{Pulmonary\:blood\: vessels}-\text{transport blood between }}$

$\footnotesize{\text{the heart and the lungs, and }}$

$\footnotesize{\red{Systemic\:blood\:vessels}-\text{transport blood between}}$

$\footnotesize{\text{the heart and body tissues .}}$

$\footnotesize{\bf{3)}\:\text{hollow cavities within the heart for containing}}$

$\footnotesize{\text{blood. Two smaller chambers called}\:\red{atrium}\:are\:near}$

$\footnotesize{\text{the base, and two larger chambers called}\:\red{ventricle}}$

$\footnotesize{\text{are close to the apex. }}$

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$\footnotesize{\bf{\underline{\red{Right\:atrium}\:(RA)}}\:\:\text{after receiving deoxygenated}}$

$\footnotesize{\text{blood from body tissues through the superior and}}$

$\footnotesize{\text{inferior vena cava, pumps the blood into the right}}$

$\footnotesize{\text{ventricle (RV) via the right atria ventricular orifice. }}$

$\footnotesize{\text{RV then pumps the blood to the lungs for gas exchan}}$

$\footnotesize{\text{-ge , through the pulmonary trunk and arteries. }}$

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$\footnotesize{\bf{\underline{\red{Left\:atrium}\:(LA)}}\:\:\text{after receiving oxygenated blood}}$

$\footnotesize{\text{from the lungs through the pulmonary veins, pumps}}$

$\footnotesize{\text{the blood into the left ventricle (LV) via the left atria}}$

$\footnotesize{\text{ventricular orifice.}}$

$\footnotesize{\bf{LV\:then\:pumps\:the blood\:to\:the\:body\:tissues ,}}$

$\footnotesize{\bf{for\:supplying\:oxygen\: to \:every\:body\:cell .......}}$

$\footnotesize{\bf{through\:the\: aorta}}$

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