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In which one of the following pairs the ...

In which one of the following pairs the two items mean one and the same thing ?

A

Malleus-anvil

B

SA node-pacemaker

C

leucocytes-lymphocytes.

D

Haemophilia-blood cancer.

Text Solution

Verified by Experts

The correct Answer is:
B
SA node or sino-atrial node is known as the pacemaker of heart because the cels in the SA node contract the most number of times per minute and because each wave of excitation begins here and acts as the stimulus for the next wave of ecotation.
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