Melatonin receptors are found in the SCN and the pituitary gland of the brain, as well as in the ovaries, blood vessels, and intestinal tract. There is a high concentration of receptors in the SCN because this is where melatonin mediates the majority of its affects on circadian rhythm. The binding of melatonin to its receptors on the pituitary gland and the ovaries appears to play a role in regulating the release of reproductive hormones in females. For example, the timing, length, and frequency of menstrual cycles in women are influenced by melatonin.
The process by which the nervous system bypasses the brain to increase response time is called a A. feedback mechanism. B. contraction. C. reflex. D. hormonal response. The process by which the nervous system bypasses the brain to increase response time is called a REFLEX. Log in to see link for more information.
1 When you have one of those infected zits and you try to pop it but the pain is just too much to bear; it is sensory (afferent) neurons that are telling your brain about the pain.  Motor (sometimes called Efferent) Neurons: Motor (Efferent) neurons take information from the brain and send in out to the rest of the body. If you have your heart set on popping that zit, you use motor (efferent) neurons to move your fingers into the proper pinching to pop position.