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The somatic nervous system consists of afferent nerves or sensory nerves, and efferent nerves or motor nerves. Afferent nerves are responsible for relaying sensation from the body to the central nervous system; efferent nerves are responsible for sending out commands from the CNS to the body, stimulating muscle contraction

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The sensory-somatic nervous system is made up of cranial and spinal nerves and contains both sensory and motor neurons. Sensory neurons transmit sensory information from the skin, skeletal muscle, and sensory organs to the CNS. Motor neurons transmit messages about desired movement from the CNS to the muscles to make them contract. Without its sensory-somatic nervous system, an animal would be unable to process any information about its environment (what it sees, feels, hears, and so on) and could not control motor movements.

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Somatics is a field within bodywork and movement studies which emphasizes internal physical perception and experience. The term is used in movement therapy to signify approaches based on the soma, or "the body as perceived from within,

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The theory behind somatic therapy is that the mind, body, spirit, and emotions are all related and connected to each other. As a result, the stress of past emotional and traumatic events affects the central nervous system and can cause changes in the body and even in body language, often resulting in altered facial expressions and posture as well as physical pain. Through developing awareness of the mind-body connection and using specific interventions, somatic therapy helps you to release the tension, anger, frustration and other emotions that remain in your body from these past negative experiences. The goal is to help free you from the stress and pain that is preventing you from fully engaging in your life.

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The somatosensory system is a complex system of sensory neurons and pathways that responds to changes at the surface or inside the body.

The somatosensory system tells us what the body is up to and what’s going on in the “environment” by providing information about bodily sensations, such as touch, temperature, pain, position in space, and movement of the joints. Unique among sensory systems. It is not localized in the head as are vision, hearing, taste, and smell, but rather is distributed throughout the entire body. (Kolb, 368)

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As adjectives the difference between sensory and somatosensory is that sensory is of the senses or sensation while somatosensory is (biology) of or pertaining to the perception of sensory stimuli produced by the skin or internal organs.

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