Question

what is circulatory system in humans​

Answer 1

Answer:

1. The circulatory system is made up of blood vessels that carry blood away from and towards the heart.

2. Arteries carry blood away from the heart and veins carry blood back to the heart.

3. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

4. The circulatory system is responsible for the transport of various substances in human beings.

5. It is composed of the heart, arteries, veins, and blood capillaries.

6. Blood plays the role of the carrier of substances. The heart is a pumping organ which pumps blood.

Answer 2

• The pulmonary vein collects oxygenated blood from the lungs and empties it into the left atrium.
• The blood then travels to the left ventricle via the arteioventicular valve, mitral valve, and bicuspid valve.
• Blood circulates through the body in a methodical arota.
• The superior vena cava and inferior vena cava discharge deoxygenated blood from the body into the right atrium.
• The blood then passes through the pulmonary artery to the lungs.

The process continues, and this form of circulation is known as twofold circulation in humans and birds.