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Question
Give reason for the following:
The blood groups of both the donor and recipient must be known before transfusing blood.
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Solution
During blood transfusion it is important that the blood groups of the donor and the recipient
are compatible. In case of an incompatible blood transfusion, the recipient develops
antibodies that attack the antigens present on the RBCs of the donor causing the blood cells
to clump together which may result in death. The examination of Rh factor is also necessary
for the blood transfusion. Therefore, the blood groups of both the donor and recipient must
be known before transfusing blood.
RELATED QUESTIONS
The diagram given below represents a section of the human heart. Answer the questions that follow :
(i) Which parts of heart are in the diastolic phase? Give a reason to support your answer.
(ii) Label the parts numbered 1 and 2 in the diagram. What type of blood flows through them?
(iii) What causes the heart sounds ‘LUBB’ and ‘DUP’?
(iv) Name the blood vessels that supply oxygenated blood to the heart muscles.
(v) Draw neat labelled diagrams of a cross section of an artery and a vein.
Given below is a certain structure, write its chief functional activity.
Erythrocytes - ______.
Differentiate between members of the following pairs with reference to the aspect asked within bracket:
artery and vein (type of blood primarily flowing through)
What are seen as greenish blue lines in our hands and legs?
Complete the following sentence with appropriate word:
The foundations of physiology were laid by the physician __________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Leucocytes show amoeboid movement.
State the Location:
Tonsils
Long answer question:
Describe human blood and give its functions.
Blood is produced in the bone marrow.
The valve which prevents back flow of blood in the veins and lymph vessels is ______.
