When we speak of the autonomic nervous system we are really talking about three main main divisions: sympathetic, parasympathetic, and enteric
neurons
The peripheral nervous system is divided into the somatic nervous system, which controls voluntary movements, and the autonomic nervous system, which regulates involuntary bodily functions like heart rate and digestion.
The sensory division of the peripheral nervous system transmits impulses from sense organs to the central nervous system. The motor division transmits impulses from the central nervous system to the muscles or glands.
The Motor Division is divided into the Somatic and Autonomic Nervous System. The Somatic Nervous System controls voluntary movements of skeletal muscles, while the Autonomic Nervous System regulates involuntary functions like heart rate and digestion.
You could define 5 parts by saying they are:the central nervous system, and the somatic, sympathetic, parasympathetic and entericnervous systems.However, a better way of describing the parts of the nervous system is todivide it into two main parts and then sub-parts:the main parts:the Central Nervous System (CNS, brain & spine),and the Peripheral Nervous System (PNS, all the nerves and neurons outside the brain and spine).Then the peripheral nervous system is divided intothe somatic nervous system (nerves which control the voluntary muscles) andthe autonomic nervous system (nerves which control visceral functions or organs like the heart or stomach);and the autonomic nervous system is itself divided into thesympathetic (fight-or-flight emergency response),parasympathetic (relaxation),and enteric (digestive) nervous systems.
neurons
Peripheral System is a division of the Nervous System. They have 2 types of cells. The sensory nervous cells carry information to the central nervous system; and the motor nervous cells carry information from the central nervous system. The Peripheral System is also divided into the somatic nervous system (controls the voluntary muscles) and the automatic nervous system (controls involuntary muscles).
Peripheral System is a division of the Nervous System. They have 2 types of cells. The sensory nervous cells carry information to the central nervous system; and the motor nervous cells carry information from the central nervous system. The Peripheral System is also divided into the somatic nervous system (controls the voluntary muscles) and the automatic nervous system (controls involuntary muscles).
automatic nervous system
The peripheral nervous system is divided into motor and sensory systems. The peripheral nervous system is also divided into the somatic nervous system and the autonomic nervous system.
The autonomic nervous system is divided into the sympathetic and parasympathetic systems.
The Central Nervous System and Peripheral Nervous system
An automatic response of the nervous system to the environment is reflex. A prolonged period of deep unconsciousness is a coma.
Involuntary and voluntary actionssomatic nervous system and autonomic nervous system
If I remember correctly, there is of course the central nervous system and the peripheral nervous system, further divided into the sympathetic and the parasympathetic nervous systems.
The two main division of The Nervous System is divided into:Peripheral Nervous SystemCentral Nervous SystemThe Peripheral Nervous System is divided into two major parts:The somatic nervous system and the autonomic nervous system. While The Central Nervous System is divided into two parts: the brain and the spinal cord.
Automatic System