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Human Circulation at a Glance
The human circulatory system is a network of organs and vessels that circulates blood throughout the body. The heart is the central organ of the circulatory system, and it pumps blood through the body via the arteries and veins. Blood carries oxygen and nutrients to the tissues and removes carbon dioxide and other wastes.
Composition of the Human Circulatory System
The human circulatory system is a network of organs and vessels that circulate blood throughout the body. The system includes the heart, which pumps blood, and the blood vessels, which carry the blood. The blood travels through a network of veins and arteries, which branch out throughout the body. The veins carry the blood back to the heart, and the arteries carry the blood away from the heart.
Functions of the Human Circulatory System
The human circulatory system has three primary functions: to transport oxygen and nutrients to the body’s cells, to remove carbon dioxide and other wastes, and to regulate body temperature. The circulatory system accomplishes these tasks through a network of veins, arteries, and capillaries.
The circulatory system begins with the heart, a muscle that pumps blood throughout the body. The heart is connected to a network of veins and arteries, which carry blood to and from the heart. The arteries carry oxygen-rich blood away from the heart, while the veins carry carbon dioxide-rich blood back to the heart.
The circulatory system is also responsible for regulating body temperature. The blood vessels in the skin can dilate (expand) and contract (contract) to regulate the amount of heat that escapes from the body.
