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.
It is a long process (projection) extending far from the nerve cell body that carries nerve impulses away from the central nervous system toward the peripheral effector organs (mainly muscles and glands). The opposite direction of neural activity is afferent conduction.In the nervous system there is a closed loop system of sensation, decision, and reactions. This process is carried out through the activity of afferent neurons (sensory neurons), interneurons, and efferent neurons (motor neurons).The motor nerves are efferent nerves involved in muscular control.The cell body of the efferent neuron is connected to a single, long axon and several shorter dendrites projecting out of the cell body itself.his process is carried out through the activity of afferent neurons (sensory neurons), interneurons, and efferent neurons (motor neurons). The motor nerves are efferent nerves involved in muscular control.