Cardiovascular system

Cardiovascular System

The cardiovascular system, also known as the circulatory system, is a complex network of organs and blood vessels that facilitates the circulation of blood, oxygen, and nutrients throughout the human body. It also aids in the removal of metabolic wastes.

Structure

The cardiovascular system is primarily composed of the heart, blood, and blood vessels, which include arteries, veins, and capillaries.

Heart

The heart is a muscular organ located in the chest, slightly to the left of the midline. It acts as a pump, driving the circulation of blood throughout the body. The heart is divided into four chambers: the left and right atria and the left and right ventricles.

Blood

Blood is a body fluid that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.

Blood Vessels

Blood vessels are the channels or conduits through which blood is distributed to body tissues. The vessels make up two closed systems: the arterial and venous systems.

Function

The primary function of the cardiovascular system is to maintain an adequate supply of oxygen to all tissues of the body. It also has several secondary functions including the delivery of nutrients, the removal of waste products, and the distribution of heat.

Diseases and Disorders

There are many diseases and disorders associated with the cardiovascular system, including coronary artery disease, hypertension, and heart failure. These conditions can lead to a reduced quality of life, significant morbidity, and premature death.

See Also

• Heart
• Blood
• Blood vessels
• Coronary artery disease
• Hypertension
• Heart failure