Question

Describe the structure and functioning of the human heart.

Answer 1

Structure of the Heart

The heart can be found at the center of the chest, underneath the sternum in a thoracic compartment. It is made up of four chambers and several valves that regulate the normal flow of blood within the body.

Two chambers called atria are located in the upper portion of the heart and receive oxygen-free blood. The valves that separate these chambers are called atrioventricular valves which is composed of the tricuspid valve on the left and the mitral valve on the right.

On the other hand, ventricles are chambers found on the lower portion of the heart; they pump oxygen-enriched blood into all organs of the body, reaching even the smallest cells. Similar to the atria, the ventricular chambers are also separated by valves. Collectively-termed as semilunar valves, these are comprised of the pulmonary and aortic valve.

Function of the Heart

The heart is the main organ in the circulatory system, the structure primarily responsible for delivering the circulation of blood and transportation of nutrients in all parts of the body. This continuous task uplifts the role of the heart as a vital organ whose normal operation is constantly required.

pl. mark as brainliest and follow me

Answer 2

FUNCTION OF HEART:

Heart is the pumping organ of the body which recieves deoxygenated blood from the body and pumps oxygenated blood back into circulation. Its functioning is divided into two

Types of circulation:

Pulmonary: Circulation to the lungs and back to the heart for purification of deoxygenated blood

Systemic: The oxygenated blood from the heart is carried by the arteries to the different body parts.

STRUCTURE OF HEART:

• The human heart is four-chambered.
• The upper two chambers are called the auricles, separated by the interatrial septum and the lower two chambers are called the ventricles, separated from each other by the interventricular septum.
• The two atria are separated by the interatrial septum. The ventricles have more muscular walls than the auricles.