Advertisements
Advertisements
प्रश्न
Describe the circulatory system of humans.
Advertisements
उत्तर
- The circulatory system in human beings consists of the heart, blood vessels (arteries, veins and capillaries) and blood.
- Blood circulates throughout the body in blood vessels by the pumping action of the heart.
- The impure blood is carried by veins from all parts of the body to the heart. The heart pumps it into the lungs, where blood is oxygenated and carried back to the heart.
- From the heart, the oxygenated (pure) blood is pumped to all parts of the body through arteries. Thus, the circulatory system forms the transport system carrying food, oxygen, waste products, nutrients, etc. throughout the body.
APPEARS IN
संबंधित प्रश्न
Why is blood needed by all the parts of a body?
With which human organ system (or human systems) is the vena cava associated?
Heart sounds are produced due to ______.
-
closure of tricuspid and bicuspid valves
-
rushing of blood through valves producing turbulence
-
closure of atrioventricular and semilunar valves
-
entry of blood into auricles
How do you account for the following difference?
The walls of the right ventricle are thicker than those of the right auricle.
Explain the structure and function of human blood.
Find the odd one out.
Put a tick mark (✓) against the correct alternative in the following statement.
The only artery which carries deoxygenated blood is called,
True or false:
People with blood group ‘O’ are called universal recipients
Which component of the haemoglobin molecule combines with the oxygen molecule to form oxyhaemoglobin?
 |
Can you answer why the pulmonary artery shown in Fig. is blue in colour?
