Organ Systems And The Nervous System Essay

2084 WordsOct 13, 20169 Pages
The six main organ systems in the human body are the nervous system, cardiovascular system, endocrine system, digestive system, skeletal system and the reproductive system. Nervous System There are two parts to the nervous system which are: the central nervous system and the peripheral nervous system. The central nervous system includes the brain and spinal cord and some nerves, whereas the peripheral nervous system includes all the other nerves and it carries information to the central nervous system and also from it. The central nervous acts as the central control region of the human nervous system. The CNS processes information and issues commands around the body. The autonomic nervous system is the command network the CNS uses to maintain the body 's homeostasis. It regulates heartbeat and controls muscle contractions in the walls of blood vessels, digestive, urinary, and reproductive tracts. It also carries messages that help stimulate glands to secrete tears, mucus, and digestive enzymes. Central nervous system A response to a stimulus is coordinated by its central nervous system (CNS). The CNS consists of the brain and the spinal cord. It gathers information about, and responds to, changes in the environment. Receptors detect a stimulus and send impulses along sensory neurons to the CNS. The CNS coordinates the information and sends impulses along motor neurons to the effectors, which bring about a response. The sequence of a response is:

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