Which human organ system produces hormones to regulate growth, development and reproduction? a. circulatoryb. digestivec. nervousd. endocrine

D. Endocrine. It produces and secretes hormones, which regulate cells and organs.

The organ system that produces hormones to regulate growth development and reproduction is endocrine system.Example that can be said is thyroid gland,adrenal gland,pancreas etc..

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

it’s lava came from an explosive eruption