The blood circulation

human heart

The human heart generates the impulses that determine its beating.

characteristic sounds

The characteristic sounds emitted by the heart are due to the closing of the valves mentioned above.

Heartbeats

Heartbeats happen according to the rhythm of electrical impulses.

Cholesterol

Cholesterol plays several roles in the human body.

electrical impulses

The electrical impulses generated propagate rapidly through the heart muscle, resulting in the simultaneous contraction of the atria.

Lymph nodes

Lymph nodes are organs in which are found many defense cells, such as lymphocytes and macrophages.

carotid arteries

The carotid arteries carry blood to the head.

What is intracavitary?

human heart