cutaneous nerve


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nerve

 [nerv]
a macroscopic cordlike structure of the body, comprising a collection of nerve fibers that convey impulses between a part of the central nervous system and some other body region. See Appendix 2-6 and see color plates.

Depending on their function, nerves are known as sensory, motor, or mixed. Sensory nerves, sometimes called afferent nerves, carry information from the outside world, such as sensations of heat, cold, and pain, to the brain and spinal cord. Motor nerves, or efferent nerves, transmit impulses from the brain and spinal cord to the muscles. Mixed nerves are composed of both motor and sensory fibers, and transmit messages in both directions at once.

Together, the nerves make up the peripheral nervous system, as distinguished from the central nervous system (brain and spinal cord). There are 12 pairs of cranial nerves, which carry messages to and from the brain. Spinal nerves arise from the spinal cord and pass out between the vertebrae; there are 31 pairs, 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal. The various nerve fibers and cells that make up the autonomic nervous system innervate the glands, heart, blood vessels, and involuntary muscles of the internal organs.
Details of structure of components of nerve tissue.
accelerator n's the cardiac sympathetic nerves, which, when stimulated, accelerate the action of the heart.
acoustic nerve vestibulocochlear nerve; see anatomic Table of Nerves in the Appendices.
afferent nerve any nerve that transmits impulses from the periphery toward the central nervous system, such as a sensory nerve. See also neuron.
articular nerve any mixed peripheral nerve that supplies a joint and its associated structures.
auditory nerve vestibulocochlear nerve; see anatomic Table of Nerves in the Appendices.
autonomic nerve any nerve of the autonomic nervous system; called also visceral nerve.
cranial n's see cranial nerves.
cutaneous nerve any mixed peripheral nerve that supplies a region of the skin. See anatomic Table of Nerves in the Appendices.
depressor nerve
1. a nerve that lessens the activity of an organ.
2. an afferent nerve whose stimulation causes a fall in blood pressure.
efferent nerve any nerve that carries impulses from the central nervous system toward the periphery, such as a motor nerve. See also neuron.
excitor nerve one that transmits impulses resulting in an increase in functional activity.
excitoreflex nerve a visceral nerve that produces reflex action.
fusimotor n's those that innervate the intrafusal fibers of the muscle spindle.
gangliated nerve any nerve of the sympathetic nervous system.
inhibitory nerve one that transmits impulses resulting in a decrease in functional activity.
medullated nerve myelinated nerve.
mixed nerve (nerve of mixed fibers) a nerve composed of both sensory (afferent) and motor (efferent) fibers.
motor nerve a peripheral efferent nerve that stimulates muscle contraction.
myelinated nerve one whose axons are encased in a myelin sheath; called also medullated nerve.
peripheral nerve any nerve outside the central nervous system.
pilomotor n's those that supply the arrector muscles of hair.
pressor nerve an afferent nerve whose irritation stimulates a vasomotor center and increases intravascular tension.
sciatic nerve see sciatic nerve.
secretory nerve an efferent nerve whose stimulation increases vascular activity.
sensory nerve a peripheral nerve that conducts impulses from a sense organ to the spinal cord or brain. See also neuron.
somatic n's the sensory and motor nerves supplying skeletal muscle and somatic tissues.
spinal n's the 31 pairs of nerves arising from the spinal cord and passing out through the vertebrae; there are eight cervical, twelve thoracic, five lumbar, five sacral, and one coccygeal. , and see anatomic Table of Nerves in the Appendices.
Spinal nerves emerging from the spinal cord through the intervertebral foramina with muscles or muscle movements listed for specific levels. From McQuillan et al., 2002.
splanchnic n's those of the blood vessels and viscera, especially the visceral branches of the thoracic, abdominal (lumbar), and pelvic parts of the sympathetic trunks. See Appendix 3-5.
sudomotor n's those that innervate the sweat glands.
sympathetic n's
2. any nerve of the sympathetic nervous system.
trophic nerve one concerned with regulation of nutrition.
unmyelinated nerve one whose axons are not encased in a myelin sheath.
vasoconstrictor nerve one whose stimulation causes contraction of blood vessels.
vasodilator nerve one whose stimulation causes dilation of blood vessels.
vasomotor nerve one concerned in controlling the caliber of vessels, whether as a vasoconstrictor or vasodilator.
vasosensory nerve any nerve supplying sensory fibers to the vessels.
visceral nerve autonomic nerve.

cu·ta·ne·ous nerve

[TA]
a mixed nerve supplying a region of the skin, including its sensory endings, blood vessels, smooth muscle, and glands.
Synonym(s): nervus cutaneus [TA]

cutaneous nerve

any mixed peripheral nerve that supplies a region of the skin.

cu·ta·ne·ous nerve

(kyū-tā'nē-ŭs nĕrv) [TA]
A mixed nerve supplying a region of the skin, including its sensory endings, blood vessels, smooth muscle, and glands.
References in periodicals archive ?
Further to this, the taut bands could cause entrapment of the thoracic medial cutaneous nerves from the thoracic posterior primary rami that supply this area as they pass directly through the rhomboid and trapezius on their way to the skin.
While no pathology related to the sensory conduction study of the median palmar cutaneous nerve was found in the extremities without CTS, pathology was seen in 52 of the extremities with CTS (62.
In addition, we did not identify the pectineus nerves in three specimens or the medial cutaneous nerves in two specimens.
Nerve conduction test can evaluate any injuries to the lateral femoral cutaneous nerve, and is more useful in ruling out other clinical conditions such as lumbar radiculopathy or peripheral neuropathy.
The branching point of sural cutaneous nerves was proximal to the joint line in all eight specimens.
The pathophysiology involves compression of the lateral femoral cutaneous nerve at its site of emergence from beneath the inguinal ligament.
The data were further supported by sural nerve biopsy and cutaneous nerve biopsy studies (Kuo et al.
Interestingly, the ulnar nerve which arose from the medial cord, descended below and was joined within its fascial sheath by the medial cutaneous nerve of the forearm
Stander and colleagues at the University Hospital in Munster, Germany, has provided evidence that CB1 and CB2 are also present in abundance in human cutaneous nerve fibers and mast cells (J.
Posteriorly the perineal branch of the fourth sacral nerve and the perforating cutaneous nerve passes through the fossa.
Perhaps the reason for this can be explained by the greater degree of collateral nerve supply to the angle of the mandible from the lesser occipital nerve posteriorly and from the transverse cutaneous nerve of the neck; both of these nerves derive from the second and third cervical nerves, as does the great auricular nerve.
Injury to the lateral femoral cutaneous nerve is usually felt on the lateral and posterolateral thigh.

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