Question

Draw the diagram of the sectional view of the human heart and label the following parts.
A) The chambers of the heart that pumps out deoxygenated blood.
B) The blood vessel that receives deoxygenated blood from the other parts of the body
C) The blood vessel that carries away oxygenated blood from the heart.
D) Part which prevents the backflow of blood

Answer 1

Hint: Heart is the important muscular organ of the cardiovascular system, where it is the structure that pumps the oxygenated blood to the body parts and the deoxygenated blood to the lungs which is the size of fist of a person.

Complete answer:
Human heart has four chambers which are articles and ventricles. Auricles are right and left and the ventricles are right and left.
In between the auricles and ventricles there are valves that are present which are called Atrioventricular valves.

A) The blood in the body parts are deoxygenated and this blood is carried for purification, where the deoxygenated blood is carried to right auricle, from which it is pumped to right ventricle through atrioventricular valves, and from the right Ventricle the deoxygenated blood is pumped out of the heart to lungs.
B) The Right auricle receives the deoxygenated blood from three different regions by three different parts, where it receives deoxygenated blood from the brain and facial parts by superior vena cava, and it receives the deoxygenated blood from lower body parts by inferior vena cava and it also receives the blood from the coronary sinus.
C) Once the deoxygenated blood is carried to lungs by pulmonary arteries from the right ventricle, in the lungs purification of the blood takes place and form oxygenated blood that carried to the left atrium through pulmonary veins, and from the left atrium it is carried to left ventricle, and left ventricle pumps out the oxygenated blood to body parts through systemic Aorta.
D) The atrioventricular valves where present between the right atrium and right ventricle are called as tricuspid valves and present between the left atrium and the left ventricle are called mitral valves. And these valves prevent the backflow of the blood.

Note: During the blood flow from articles to ventricles the closing of atrioventricular valves create a S1 sound and it is called LUB, while during ventricular diastole, there is close of semilunar valves which form the other sound called DUB. These two are the heart sounds that we hear through the stethoscope.