The human transport system, also known as the circulatory system, is comprised of the heart, blood, and blood vessels. The heart’s function is to pump blood throughout the body, while blood transports oxygen, nutrients, and hormones and removes waste products. Blood vessels, including arteries, capillaries, and veins, facilitate the movement and exchange of blood.
Components and their functions:
Heart:
The heart acts as a muscular pump, propelling blood into the circulatory system. It receives deoxygenated blood from the body and pumps it to the lungs for oxygenation, then pumps the oxygenated blood back to the body.
Blood:
Blood is a fluid connective tissue that transports various substances throughout the body.
Plasma: The liquid portion of blood, responsible for carrying nutrients, hormones, waste products, and proteins.
Red Blood Cells (RBCs): Primarily responsible for carrying oxygen and carbon dioxide, according to Doubtnut and BYJU\’S.
White Blood Cells (WBCs): Part of the immune system, protecting the body from infections.
Blood Platelets: Help in blood clotting to prevent excessive blood loss when an injury occurs.
Blood Vessels:
A network of tubes that carry blood throughout the body.
Arteries: Carry oxygenated blood away from the heart to the tissues.
Capillaries: Small blood vessels where the exchange of substances between the blood and body cells occurs.
Veins: Carry deoxygenated blood back to the heart.

The human transport system, also known as them, also known as the circulatory system, is composed of the heart, blood, and blood vessels. The heart is a muscular pump that circulates blood, while blood acts as the fluid medium transporting essential substances. Blood vessels, including arteries, veins, and capillaries, facilitate blood circulation and material exchange between blood and body tissues.
Components and Their Functions:
1. Heart:
The heart is the central organ of the circulatory system, responsible for pumping blood throughout the body. It receives deoxygenated blood from the body, pumps it to the lungs for oxygenation, and then pumps the oxygenated blood to the rest of the body.
2. Blood:
Blood is a fluid connective tissue that carries various substances, including oxygen, nutrients, carbon dioxide, and waste products. It consists of plasma, red blood cells (RBCs), white blood cells (WBCs), and platelets. RBCs transport oxygen, WBCs protect against infection, and platelets help in blood clotting.
3. Blood Vessels:
Blood vessels are a network of tubes that carry blood throughout the body.
Arteries: Carry oxygenated blood away from the heart to various organs.
Veins: Carry deoxygenated blood back to the heart from different body parts.
Capillaries: These tiny vessels facilitate the exchange of oxygen, nutrients, carbon dioxide, and waste products between the blood and body tissues.