Psych M.D.- Somatic nervous system


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


Term:somatic nervous system
Definition (Myers): the division of the perihperal nervous system that controls the body's skeletal muscles
Definition (alternative): The somatic nervous system is the part of the peripheral nervous system associated with the voluntary control of body movements through the action of skeletal muscles and with reception of external stimuli, which helps keep the body in touch with its surroundings (e.g. touch, hearing and seeing).*
Contextual explanation:

The somatic nervous system is a part of the peripheral nervous system.
The somatic nervous system, or voluntary nervous system, enables humans to react consciously to environmental changes. It includes 31 pairs of spinal nerves and 12 pairs of cranial nerves. This system controls movements of skeletal (voluntary) muscles.But you have to note that it controls all voluntary muscular systems within the body, with the exception of reflex arc (balance, the blinking reflex, and the stretch reflex).When the doctor taps your knee with the rubber hammer, she/he is testing your reflex (or knee-jerk). The reaction to the stimulus is involuntary, with the CNS being informed but not consciously controlling the response.



Related terms and concepts: Nervous system, Peripheral nervous system, Motor nerves, Autonomic nervous sytem
Psych M.D.- Somatic nervous system - The Neuron

Related websites:http://pennhealth.com/health_info/body_guide/reftext/html/nerv_sys_fin.html
Edited by: Kelsey



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