CONTROL AND RESPRODUCTION

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You decide to raise your hand in class. This movement is controlled by the

The endocrine system uses feedback mechanisms to

A reaction to a change in your environment is caused when your sense organs perceive a

This sense allows you to feel pressure, temperature, and pain.

Soon after implantation, the placenta is formed. The placenta allows

The male reproductive organs that produce sperm are known as

Structures of the endocrine system that produce hormones are called

Chemicals that are made in one location in the body and function in another location are called