Advertisements
Advertisements
प्रश्न
Given below is a simple diagram of the circulation of blood in a mammal showing the main blood vessels, the heart, lungs, and body tissues. The blood vessel labeled 6 contains deoxygenated blood and 2 the valve leading to it has three semi-lunar pockets.
(i) Name the blood vessels of organs marked by numbers 1 to 8.
(ii) What do you mean by the term ‘double circulation’ of blood in mammals?
(iii) What is diastole?
Advertisements
उत्तर
(i)
1. Veins from tissues.
2. Superior vena cava
3. Aorta
4. Right ventricle
5. Left ventricle
6. Pulmonary Artery
7. Pulmonary vein
8. Lungs.
(ii) The heart is said to have double circulation because the blood passes through the heart twice.
(a) It first leaves t.rough the right ventricle, goes to the lungs and then returns to the left auricle of the heart (pulmonary circulation).
(b) It leaves through the left ventricle, circulates through the body, and again returns to the right auricle of heart (systemic circulation).
(iii) Diastole is the phase of relaxation of the heart muscles during which the heart chambers fill with blood and the supply of blood to the cardiac muscle is improved.
APPEARS IN
संबंधित प्रश्न
How many types of blood vessels are there in the human body? Name them.
Differentiate between the following pair of terms:
RBC and WBC.
Fill in the blank with suitable word given below:
The carbon dioxide loaded blood from right ventricle is pumped into the lungs through _________ artery.
Answer very briefly, Why is it necessary to know The blood groups of the donor as well as the recipient ?
Which of the following statement is true (T) and which ones are false (F)? Mark T or F:
Blood group A has antigen A.
Describe the function of Blood vessels.
Write in brief about the following:
Blood groups
Name the main artery which carries blood to different parts of the body.
Give reason Arterial walls are thicker than those of veins.
Name these:
Three kinds of blood vessels.
