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Blood Vascular System
The Human Heart
Arterial Blood Pressure
Circulation
• Blood Coagulation
• Lymphatic System
• Blood Groups
• Disorders of the circula
, Blood Vascular
System
The circulatory system has two functional components: the blood vascular
system, and the lymph vascular system. The blood vascular system
constitutes a circuit of vessels through which flow of blood is maintained by
continuous pumping of the heart.
Blood Vascular System
Open Circulatory System Closed Circulatory
System
The blood does not remain confined. Blood flows through
capillaries.
, HUMAN HEART
Position of Heart in Human Body
The human heart is located between the lungs in the thoracic
cavity, slightly towards the left of the sternum (breastbone). It
is derived from the embryonic mesodermal germ layer.
The Function of Heart
One of the primary functions of the human heart is to pump
blood throughout the body.
Blood delivers oxygen, hormones, glucose and other
components to various parts of the body, including the
human heart.
The heart also ensures that adequate blood pressure is
maintained in the body.
Structure of the Human Heart
The human heart is about the size of a human fist and is divided into
four chambers, namely two ventricles and two atria. The
ventricles are the chambers that pump blood and atrium are the
chambers that receive blood. Among which both right atrium and
ventricle make up the “right heart,” and the left atrium and ventricle
make up the “left heart.” The structure of the heart also houses the