General somatic afferent fibers convey impulses for exteroreceptors of the skin (cutaneous sensation of pain, temperature, touch, vibration, or pressure) and from proprioreceptors localized in the muscles, joints, ligaments, or in the periosteum of bones via spinal nerves and some cranial nerves.
What does the somatic nervous system do?
The somatic nervous system is a component of the peripheral nervous system associated with the voluntary control of the body movements via the use of skeletal muscles.
What is sensory nerve fiber?
Afferent nerve fibers in a sensory nerve carry sensory information toward the central nervous system (CNS) from different sensory receptors of sensory neurons in the peripheral nervous system. … A motor nerve carries information from the CNS to the PNS, and both types of nerve are called peripheral nerves.
What is the function of general somatic efferent fibers?
General somatic efferent fibers carry motor impulses to somatic skeletal muscles. In the head, the tongue and extraocular muscles are of this type.
What parts of the body are controlled by somatic nerves?
The somatic nervous system provides control of skeletal muscle movement. Conscious control of movement originates in the motor cortex (both premotor and primary motor cortex). However, movement is refined and coordinated by various structures in the CNS, including extrapyramidal regions and the cerebellum.
What is difference between somatic and autonomic nervous system?
The somatic nervous system is associated with activities traditionally thought of as conscious or voluntary. … The autonomic nervous system controls our internal organs and glands and is generally considered to be outside the realm of voluntary control.
What is general somatic sensation?
General somatic afferent receptors are sensitive to pain, thermal sensation, touch and pressure, and changes in the position of the body. (Pain and temperature sensation coming from the surface of the body is called exteroceptive, while sensory information arising from tendons, muscles, or joint capsules…
What does General somatic afferent mean?
The general somatic afferent (GSA) system comprises the neurons distributed primarily by the fifth cranial nerve to the surface of the head and all the spinal nerves to the surface of body and limbs that are sensitive to touch, temperature, and noxious stimuli.
What are the 5 sensory nerves?
In short, sensory neurons are nerve cells that transmit information gained by our senses to the CNS (Central Nervous System). While there is much debate about how many senses we have, scientists agree we have at least five basic senses to perceive the world around us: vision, olfaction, taste, audition, and touch .
Where in the body are sensory nerve fibers most abundant?
Free nerve endings: These are the most abundant type of sensory endings, occurring widely in the integument and within muscles, joints, viscera, and other structures.