Question

describe the structure and working of human heart

Answer 1

Structure of Human Heart:-
The heart is a muscular organ covered by a double membrane called pericardium.
The pericardial fluid of the pericardium lubricates the heart.
The heart is divided into four chambers — two upper atria and two lower ventricles.
The inter-atrial septum separates the two atria and the inter-ventricular septum separates the two ventricles.
The atrium and the ventricle of each side are separated by the atrioventricular septum.

Working of Heart:-
The right atrium receives blood from the upper and lower body through the superior vena cava and the inferior vena cava, respectively, and from the heart muscle itself through the coronary sinus. The right atrium is the larger of the two atria, having very thin walls. The right atrium opens into the right ventricle through the right atrioventricular valve(tricuspid), which only allows the blood to flow from the atria into the ventricle, but not in the reverse direction.
The right ventricle pumps the blood to the lungs to be reoxygenated.

Hope u like the ans.. Plse Mark me as brainlist

Answer 2

⭐ Hello Mate ⭐
✔️Here is your answer ✔️
=========✓✓✓✓✓==========

$Structure Of Human Heart$
$\color{Red}{External Structure}$
The human heart is a four chambered organ divided by septa into two halves-
The right half and the left half.Each half consists of two chamber-
1- Auricle
2-Ventricle

$\color{red}{Internal Structure}$
Internally,the heart has the following main components- four chambers(two auricles and two ventricles), great blood vessels that carry blood to the heart and away from it and various apertures and valves.

==$\color{Blue}{Working Of heart}$==

Human heart is an organ that pumps blood throughout the body via circulatory system.
The various steps or work of heart is given below-
➡️When all the four chambers of heart are relaxed,the oxygenated blood from lungs enters the left atrium through pulmonary vein.The left atrium is relaxed while collecting the blood.
➡️Now, the left atrium contract and the oxygenated blood is pushed into the expanded left ventricle through the bicuspid valve.
➡️Now, the left ventricle contract and the oxygenated blood is pumped into the aorta.The oxygenated blood is then transferred to all parts of the body except lungs. This is how blood is rich in oxygen and supplied to all body parts.
➡️The deoxygenated blood from body is carried to right atrium as it expands.
➡️ When the right atrium contract,the right ventricle dilates transferring the blood to right ventricle.
➡️The right ventricle pumps deoxygenated blood to the lungs for oxygenation.

✔️This process continues in human body by heart and thus in this way the human heart works.✔️

✌️Hope it helps you ✌️
☺️ Thank you ☺️