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प्रश्न
Mention the phase of heart beat in which both the atrio-ventricular valves are closed.
उत्तर
Ventricular systole.
संबंधित प्रश्न
Give biological reasons for the following statements:
The left ventricle of the heart has a thicker wall than the right ventricle.
The diagram below represents the simplified pathway of the circulation of blood. Study the same and answer the questions which follow:
(i) Name the blood vessels labelled 1 and 2.
(ii) State the function of blood vessels labelled 5 and 8.
(iii) What is the importance of the blood vessel labelled 6?
(iv) Which blood vessel will contain a high amount of glucose and amino acids after a meal?
(v) Draw a diagram of the different blood cells as seen in a smear of human blood.
Describe, in brief, the circulatory system in human beings.
Name the following:
The artery which carries deoxygenated blood.
Differentiate between members of the following pairs with reference to the aspect asked
within bracket:
Erythrocytes and leucocytes (function)
Differentiate between members of the following pairs with reference to the aspect asked within bracket:
Tricuspid and bicuspid values (location)
Explain with reasons.
Human blood is red coloured.
Why does the left ventricle possess a thicker wall than the right ventricle?
The oxygen-rich blood from the lungs comes into the ______ of the heart.
Name these:
Two kinds of circulatory systems in different animals.
