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7.Human Health and Disease
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In mammals, histamine is secreted by
A
Fibroblasts
B
Histiocytes
C
Lymphocytes
D
Mast cells
(AIPMT-1998)
Solution
(d)Mast cell is found in the ground substance of areolar connective tissue. They secrete heparin and histamine.
Standard 12
Biology
Similar Questions
Match the columns :
| Column – $I$ | Column – $II$ |
| $(a)$ Pre erythrocytiC cycle | $(1)$ Meta cryptomerozoites enters RBC and becomes spherical in shape. |
| $(b)$ Exo-erythrocyticcycle | $(2)$ sporozoites in saliva are introduced to human blood |
| $(c)$ Endo-erythrocytic cycle | $(3)$ Breaks the liver cells and comes our of blood. |
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