Search results
Results from the WOW.Com Content Network
The opposite direction of neural activity is afferent conduction, [2] [3] [4] which carries impulses by way of the afferent nerve fibers of sensory neurons. In the nervous system, there is a "closed loop" system of sensation, decision, and reactions.
A motor nerve carries information from the CNS to the PNS. Afferent nerve fibers link the sensory neurons throughout the body, in pathways to the relevant processing circuits in the central nervous system. [2] Afferent nerve fibers are often paired with efferent nerve fibers from the motor neurons (that travel from the CNS to the PNS), in mixed ...
Sensory Afferent Motor Efferent, Dorsal Afferent Ventral Efferent. Afferent and efferent are connected to affect and effect through their common Latin roots: afferent nerves affect the subject, whereas efferent nerves allow the subject to effect change.
A motor nerve, or efferent nerve, is a nerve that contains exclusively efferent nerve fibers and transmits motor signals from the central nervous system (CNS) to the muscles of the body. This is different from the motor neuron , which includes a cell body and branching of dendrites, while the nerve is made up of a bundle of axons.
A muscle spindle, with γ motor and Ia sensory fibers. A type Ia sensory fiber, or a primary afferent fiber, is a type of afferent nerve fiber. [1] It is the sensory fiber of a stretch receptor called the muscle spindle found in muscles, which constantly monitors the rate at which a muscle stretch changes.
In the abdomen, general visceral afferent fibers usually accompany sympathetic efferent fibers. This means that a signal traveling in an afferent fiber will begin at sensory receptors in the afferent fiber's target organ, travel up to the ganglion where the sympathetic efferent fiber synapses, continue back along a splanchnic nerve from the ganglion into the sympathetic trunk, move into a ...
A mixed nerve is any nerve that contains both sensory and motor nerve fibers. [ 1 ] [ 2 ] All 31 pairs of spinal nerves are mixed nerves. [ 3 ] Four of the twelve cranial nerves – V , VII , IX and X are mixed nerves.
Each of these three structures carries both sensory and motor information. Each spinal nerve is a mixed nerve that carries both sensory and motor information, via efferent and afferent nerve fibers—ultimately via the motor cortex in the frontal lobe and to somatosensory cortex in the parietal lobe—but also through the phenomenon of reflex.