If you suddenly began having trouble sleeping how might the pineal gland be involved

Describe the overall function of the nervous system

Select all that apply. which of the following are functions of the skeletal system? 1. to provide the body with a strong and mobile framework 2. to allow the body to move 3. to protect internal organs from sunlight, bacteria, and injury 4. to supply the body with blood cells and minerals

What is the hormone in your brain that makes you feel happy?