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. Motor nerves act as efferent nerves which carry information out from the CNS to muscles, as opposed to afferent nerves (also called sensory nerves), which transfer signals from sensory receptors in the periphery to the CNS.[1] Efferent nerves can also connect to glands or other organs/issues instead of muscles (and so motor nerves are not equivalent to efferent nerves).[2][3] The vast majority of nerves contain both sensory and motor fibers and are therefore called mixed nerves.[4]
^Slater, Clarke R. (2015-11-01). "The functional organization of motor nerve terminals". Progress in Neurobiology. 134: 55–103. doi:10.1016/j.pneurobio.2015.09.004. ISSN 0301-0082. PMID 26439950. S2CID 207407321.
^"Efferent Nerve - an overview". Science Direct. Retrieved 2021-02-19.
^"Motor Nerve - an overview". Science Direct. Retrieved 2021-02-19.
^Glass, Jonathan D (2018-03-19). "Neuromuscular Disease: Protecting the nerve terminals". eLife. 7. doi:10.7554/eLife.35664. ISSN 2050-084X. PMC 5858932. PMID 29553367.
A motornerve, or efferent nerve, is a nerve that contains exclusively efferent nerve fibers and transmits motor signals from the central nervous system...
Greek ἄξων áxōn, axis) or nerve fiber (or nerve fibre: see spelling differences) is a long, slender projection of a nerve cell, or neuron, in vertebrates...
cord and occasionally directly onto lower motor neurons. The axons from the lower motor neurons are efferent nerve fibers that carry signals from the spinal...
nose) to the vagus nerve. Being a mixed nerve (sensorimotor), it carries afferent sensory and efferent motor information. The motor division of the glossopharyngeal...
The motor part of the facial nerve arises from the facial nerve nucleus in the pons, while the sensory and parasympathetic parts of the facial nerve arise...
latencies in the Median sensory, Median motor, and Ulnar sensory nerves. However, conduction velocity of the Sural nerve is not associated with age. In general...
subsystem. The vagus is the longest nerve of the autonomic nervous system in the human body and comprises both sensory and motor fibers. The sensory fibers originate...
The suprascapular nerve is a mixed (sensory and motor) nerve that branches from the upper trunk of the brachial plexus. It is derived from the ventral...
mandibular nerve supplies motor as well as sensory (or "cutaneous") functions. Adding to the complexity of this nerve is that autonomic nerve fibers as...
palatoglossus, which is innervated by the vagus nerve. CN XII is a nerve with a sole motor function. The nerve arises from the hypoglossal nucleus in the medulla...
roots of spinal nerves C5, C6, C7, C8 and T1. The radial nerve and its branches provide motor innervation to the dorsal arm muscles (the triceps brachii...
billing. Motor NCS are obtained by stimulating a nerve containing motor fibers and recording at the belly of a muscle innervated by that nerve. The compound...
The pudendal nerve is the main nerve of the perineum.: 274 It is a mixed (motor and sensory) nerve and also conveys sympathetic autonomic fibers. It carries...
sensory nerve, or afferent nerve, is an anatomic term for a nerve that contains exclusively afferent nerve fibers. Nerves containing also motor fibers...
the olive. The cranial nerve nuclei schematically represented; dorsal view. Motor nuclei in red; sensory in blue. Dorsal motor nucleus of Vagus with Lewy...
A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are...
The efferent nerve fibers of motor neurons are involved in muscle control, both skeletal and smooth muscle. The cell body of the motor neuron is connected...
needed] When the motornerve is stimulated there is a delay of only 0.5 to 0.8 msec between the arrival of the nerve impulse in the motornerve terminals and...
other cranial nerves, the trochlear nerve is exclusively a motornerve (somatic efferent nerve). The trochlear nerve is unique among the cranial nerves...
The phrenic nerve is a mixed motor/sensory nerve that originates from the C3-C5 spinal nerves in the neck. The nerve is important for breathing because...
the autonomic motor nuclei, and includes the nucleus ambiguus, facial nerve nucleus, as well as the motor part of the trigeminal nerve nucleus. This list...
nerve is wrapped in a layer of connective tissue called the epineurium. Nerve cells (often called neurons) are further classified as sensory, motor,...
synapse Efferent nerve fibers carry motornerve signals from the anterior horn to the muscles Effector muscle innervated by the efferent nerve fiber carries...
segments from which branch one pair of sensory nerve roots and one pair of motornerve roots. The nerve roots then merge into bilaterally symmetrical pairs...
the hand. Therefore, it is also called "labourer's nerve". The median nerve has no voluntary motor or cutaneous function in the brachium. It gives vascular...
human brain dedicated to processing motor functions, and/ or sensory functions, for different parts of the body. Nerve fibres—conducting somatosensory information...
that make up the nerve may collect in more than one nucleus. For example, the trigeminal nerve (V), which has a sensory and a motor role, has at least...
(C4). It contributes nerve fibers to the phrenic nerve, the motornerve to the thoracoabdominal diaphragm. It also provides motor nerves for the longus...
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