MCQ
Hair present in the skin are:
- AEpidermal in origin and made of dead cells.
- BEpidermal in origin and made of living cells.
- CDermal in origin and made of living cells.
- DDermal in origin and made of dead cells.
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$(i)$ Leucocytes disintegrate in the spleen and liver.
$(ii)$ $RBC, WBC$ and blood platelets are produced by bone marrow.
$(iii)$ Neutrophils bring about destruction and detoxification of toxins of protein origin.
$(iv)$ The important function of lymphocytes is to produce antibodies
