A chemical messenger molecule secreted by an endocrine gland or cell into the bloodstream that has effects on specific target cells throughout the body.

GENERAL PHYSIOLOGY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	cortex
B	thyroxine
C	hormone
D	histamine

Explanation:

Detailed explanation-1: -Summary. Endocrine glands secrete hormones straight into the bloodstream. Hormones help to control many body functions, such as growth, repair and reproduction.

Detailed explanation-2: -Hormones act as chemical messengers that are released into the blood stream to act on an organ in another part of the body.

Detailed explanation-3: -The glands that make up the endocrine system produce chemical messengers called hormones that travel through the blood to other parts of the body.

Detailed explanation-4: -The correct answer is (a) paracrine. A chemical messenger stimulating the initially secreted cell is known as paracrine.

There is 1 question to complete.