Question

What are the components of the transport system in human beings? What are the functions of these components?

Answer 1

The transport system in humans:

The human circulatory system transports necessary nutrients and minerals throughout the body while also transporting metabolic waste products away from the body.

Components of the transport system:

1. Heart
2. Blood
3. Blood vessels
4. Lymphatic system

Heart:

1. Two upper chambers, the left, and right atria, and two inferior chambers, the left, and right ventricles, make up the heart.
2. The human heart's primary role is to circulate blood throughout the body.
3. Oxygenated blood is pumped to the body by the left side of the heart (left atrium and left ventricle)
4. Deoxygenated blood is pumped to the lungs via the right side of the heart (right atrium and right ventricle).

Blood:

1. Blood comprises blood plasma and formed elements.
2. Transportation of oxygen, carbon dioxide, nutrients, hormones, heat, and wastes.

Blood vessels:

1. Arteries - carries oxygenated blood away from the heart to the capillaries.
2. Capillaries - These facilitate the exchange of materials with the tissues.
3. Veins - returns deoxygenated blood from the capillaries to the heart

Lymphatic system:

1. It is a network of tissues, vessels, and organs that work together to move lymph across the body transporting lymphocytes.
2. Lymph transfers materials from blood to the body cells and vice-versa.
3. The lymphatic system's functions include defending the body against microorganisms that cause disease (pathogens), preserving bodily fluid balance, absorbing lipids from the digestive tract, and eliminating cellular waste.