EVERYDAY SCIENCE

Detailed explanation-1: -Here blood is pumped through a closed system of arteries, veins, and capillaries. Capillaries surround the organs, making sure that all cells have an equal opportunity for nourishment and removal of their waste products.

Detailed explanation-2: -They transport blood, nutrients and oxygen to cells in your organs and body systems. Capillaries are the smallest blood vessels in your vascular system.

Detailed explanation-3: -The closed circulatory system is present in Annelids and Chordates.

Detailed explanation-4: -The arteries branch off into smaller and smaller tubes. These bring oxygen and other nutrients to the cells of the body’s tissues and organs. The smallest tubes are called capillaries. As blood moves through the capillaries, the oxygen and other nutrients move out into the cells.

Detailed explanation-5: -The circulatory system is effectively a network of cylindrical vessels (the arteries, veins, and capillaries) that emanate from a pump (the heart). In all vertebrate organisms, as well as some invertebrates, this is a closed-loop system in which the blood is not moving freely in a cavity.