ANATOMY

Detailed explanation-1: -A soccer ball comes flying toward you. You throw up your hands to be avoid being hit in the face. Which is the stimuli? The ball coming towards you.

Detailed explanation-2: -The somatic nervous system carries messages that control body movements. It is responsible for activities that are under your control, such as waving your hand or kicking a ball. The autonomic nervous system carries nerve impulses to internal organs.

Detailed explanation-3: -The spinal cord runs from the brain down through the back. It contains threadlike nerves that branch out to every organ and body part. This network of nerves relays messages back and forth from the brain to different parts of the body.

Detailed explanation-4: -The nervous system transmits signals between the brain and the rest of the body, including internal organs. In this way, the nervous system’s activity controls the ability to move, breathe, see, think, and more. The basic unit of the nervous system is a nerve cell, or neuron.

Detailed explanation-5: -Neurons carry messages from the brain via the spinal cord. The neurons that carry these messages to the muscles are called motor neurons.