Question

◦ Describe the chambers of the heart and any special structures found in each chamber (e.g. papillary muscles, auricles, pectinate muscles, valves)

Answer 1

CHAMBERS OF THE HEART:

ANSWER: There are four chambers of the heart. Two atrium and two ventricles

Two atrium - Right and left atrium

Two ventricle- Right and left ventricle

These chambers of the heart plays major role in the heart. The deoxygenated blood from the body goes to the superior and inferior vena cava to the Right atrium. The right atrium and right ventricles are separated by the valve known as tricuspid valve, when the blood reaches the Right ventricle via tricuspid valve it goes to the lungs for the purification which means ; the lungs will convert the deoxygenated blood into the oxygenated blood.

Then through pulmonary veins the oxygenated blood will reaches the left atrium and it goes the left ventricle via bicuspid or mitral valve. And from there the body will get the oxygenated blood from the aorta.

some of the structures presented in the chambers;

papillary Muscles- These Muscles in the inside the bottom region which is ventricular region, Mainly it will hold the Valves of the heart through the string like structures called chordae tendinae.

chordae tendinae- It is like a structure of strings which link the valve of the chambers to the papillary Muscles and helps in the opening and closing of the valves.

Auricles- It is also know as atrium, There are two auricles. Right auricles is the place where the deoxygenated blood from the body is filled in that chambers. And left auricles is the place where the oxygenated blood from the lungs get filled into the chambers.
pectinate Muscles- These Muscles only located in the atrium or auricles of the heat chambers.

valves - we can see two valves in the chambers Also I marked the valves in above diagram.

In Heart there are another two valve which is also know as semilunar valves. That is pulmonary valve which is opening from the right ventricle to the pulmonary arteries it will further reaches the lungs.

And another valve is Aortic valve between the left ventricle and the aorta.