A nerve is an enclosed, cable-like bundle of axons (the long, slender projection of a neuron). A nerve also includes the glial cells that ensheath the axons in myelin.
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205 Nerve topics matching:
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| x Cranial nerves |
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Cranial nerves are nerves that emerge directly from the brain, in contrast to spinal nerves, which emerge from segments of the spinal cord. In humans, there are traditionally twelve pairs of cranial nerves. Only the first and the second pair emerge...
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| x Vagus nerve |
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The vagus nerve ( /ˈveɪɡəs/ US dict: vā′·gəs), also called pneumogastric nerve or cranial nerve X, is the tenth of twelve (excluding CN0) paired cranial nerves. Upon leaving the medulla between the medullary pyramid and the inferior cerebellar...
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| x Optic nerve |
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The optic nerve, also known as cranial nerve 2, transmits visual information from the retina to the brain. Derived from the embryonic retinal ganglion cell, a diverticulum located in the diencephalon, the optic nerve does not regenerate after...
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| x Pudendal nerve |
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The pudendal nerve is a sensory and somatic nerve in the pelvic region that innervates the external genitalia of both sexes, as well as sphincters for the bladder and the rectum. It originates in Onuf's nucleus in the sacral region of the spinal...
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| x Olfactory nerve |
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The olfactory nerve, or cranial nerve I, is the first of twelve cranial nerves. It is instrumental in the sense of smell. Derived from the embryonic nasal placode, the olfactory nerve is capable of regeneration.
The specialized olfactory receptor...
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| x Abducent nerve |
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The abducens nerve or abducent nerve (the sixth cranial nerve, also called the sixth nerve or simply VI) is a somatic efferent nerve that controls the movement of a single muscle, the lateral rectus muscle of the eye, in humans. In most other...
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| x Facial nerve |
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The facial nerve is the seventh (VII) of twelve paired cranial nerves. It emerges from the brainstem between the pons and the medulla, and controls the muscles of facial expression, and functions in the conveyance of taste sensations from the...
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| x Radial nerve |
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The radial nerve is a nerve in the human body that supplies the upper limb. It supplies the medial and lateral heads of the triceps brachii muscle of the arm, as well as all 12 muscles in the posterior osteofascial compartment of the forearm and the...
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| x Median nerve |
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The median nerve is a nerve in humans and other animals. It is in the upper limb. It is one of the five main nerves originating from the brachial plexus.
The median nerve is formed from parts of the medial and lateral cords of the brachial plexus,...
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| x Brachial plexus |
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The brachial plexus is a network of nerve fibers, running from the spine, formed by the ventral rami of the lower four cervical and first thoracic nerve roots (C5-C8, T1). It proceeds through the neck, the axilla (armpit region), and into the arm....
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| x Sciatic nerve |
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The sciatic nerve (also known as the ischiadic nerve and the ischiatic nerve) is a large nerve fiber in humans and other animals. It begins in the lower back and runs through the buttock and down the lower limb. It is the longest and widest single...
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| x Axillary nerve |
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The axillary nerve or the circumflex nerve is a nerve of the human body, that comes off the of the brachial plexus (middle trunk, posterior division, posterior cord) at the level of the axilla (armpit) and carries nerve fibers from C5 and C6. The...
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| x Ulnar nerve |
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In human anatomy, the ulnar nerve is a nerve which runs near the ulna bone. The ulnar collateral ligament of elbow joint is in relation with the ulnar nerve. The nerve is the largest unprotected nerve in the human body (meaning unprotected by muscle...
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| x Oculomotor nerve |
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The oculomotor nerve is the 3rd of 12 paired cranial nerves. It enters the orbit via the superior orbital fissure and controls most of the eye's movements, including constriction of the pupil and maintaining an open eyelid by innervating the levator...
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| x Trochlear nerve |
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The trochlear nerve (the fourth cranial nerve, also called the fourth nerve, IV) is a motor nerve (a “somatic efferent” nerve) that innervates a single muscle: the superior oblique muscle of the eye.
The trochlear nerve is unique among the cranial...
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| x Trigeminal nerve |
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The trigeminal nerve (the fifth cranial nerve, also called the fifth nerve, or simply CNV or CN5) contains both sensory and motor fibers. It is responsible for sensation in the face and certain motor functions such as biting, chewing, and swallowing...
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| x Vestibulocochlear nerve |
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The vestibulocochlear nerve (auditory vestibular nerve) is the eighth of twelve cranial nerves, and is responsible for transmitting sound and equilibrium (balance) information from the inner ear to the brain. The acoustic nerve is derived from the...
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| x Glossopharyngeal nerve |
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The glossopharyngeal nerve is the ninth (IX) of twelve pairs of cranial nerves (24 nerves total). It exits the brainstem out from the sides of the upper medulla, just rostral (closer to the nose) to the vagus nerve. The motor division of the...
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| x Accessory nerve |
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In anatomy, the accessory nerve is a nerve that controls specific muscles of the shoulder and neck. As part of it was formerly believed to originate in the brain, it is considered a cranial nerve. Based on its location relative to other such nerves,...
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| x Hypoglossal nerve |
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The hypoglossal nerve is the twelfth cranial nerve (XII), leading to the tongue. The nerve arises from the hypoglossal nucleus and emerges from the medulla oblongata in the preolivary sulcus separating the olive and the pyramid. It then passes...
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| x Suboccipital nerve |
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The suboccipital nerve is the dorsal primary ramus of the first cervical nerve (C1). It exits the spinal cord between the skull and the first cervical vertebra, the atlas.
It lies within the suboccipital triangle along with the vertebral artery,...
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| x Greater occipital nerve |
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The greater occipital nerve is a spinal nerve, specifically the medial branch of the dorsal primary ramus of cervical spinal nerve 2. This nerve arises from between the first and second cervical vertebrae, along with the lesser occipital nerve. It...
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| x Lesser occipital nerve |
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The lesser occipital nerve or small occipital nerve is a cutaneous spinal nerve arising between the second and third cervical vertebrae, along with the greater occipital nerve. It innervates the scalp in the lateral area of the head posterior to the...
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| x Greater auricular nerve |
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The great auricular nerve originates from the cervical plexus, composed of branches of spinal nerves C2 and C3. It provides sensory innervation for the skin over parotid gland and mastoid process, and both surfaces of the outer ear.
Although this...
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| x Phrenic nerve |
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The phrenic nerve (Greek: φρήν phrēn "mind") originates mainly from the 4th cervical nerve, but also receives contributions from the 5th and 3rd cervical nerves (C3-C5) in humans.
The phrenic nerves contain motor, sensory, and sympathetic nerve...
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| x Dorsal scapular nerve |
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The dorsal scapular nerve arises from the brachial plexus, usually from the plexus root (anterior/ventral ramus) of C5.
It provides motor innervation to the rhomboid muscles, which pull the scapula towards the spine and levator scapulae muscle,...
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| x Long thoracic nerve |
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The long thoracic nerve (external respiratory nerve of Bell; posterior thoracic nerve) supplies the Serratus anterior. This nerve characteristically arises by three roots from the fifth, sixth, and seventh cervical nerves (C5-C7) but the root from...
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| x Mandibular nerve |
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The mandibular nerve (V3) is the largest of the three branches of the trigeminal nerve.
It is made up of two roots:
The two roots (sensory and motor) exit the middle cranial fossa through the foramen ovale. The two roots then combine.
Immediately in...
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| x Supraorbital nerve |
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The supraorbital nerve is a terminal branch of the frontal nerve.
It passes through the supraorbital foramen, and gives off, in this situation, palpebral filaments to the upper eyelid. Additionally it supplies the conjunctiva of the eye, the frontal...
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| x Genitofemoral nerve |
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In human anatomy, the genitofemoral nerve originates from the upper part of the lumbar plexus of spinal nerves. Its roots are L1 and L2 (lumbar).
The genitofemoral nerve is responsible for both the efferent and afferent limbs of the cremasteric...
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| x Auerbach's plexus |
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A part of the enteric nervous system, Auerbach's plexus (or myenteric plexus), exists between the longitudinal and circular layers of muscularis externa in the gastrointestinal tract and provides motor innervation to both layers of the mucosa,...
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| x Cervical plexus |
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The cervical plexus is a plexus of the ventral rami of the first four cervical spinal nerves which are located from C1 to C4 cervical segment in the neck. They are located laterally to the transverse processes between prevertebral muscles from the...
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| x Musculocutaneous nerve |
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The musculocutaneous nerve arises from the lateral cord of the brachial plexus, opposite the lower border of the Pectoralis major, its fibers being derived from C5, C6 and C7.
It penetrates the Coracobrachialis muscle and passes obliquely between...
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| x Inferior alveolar nerve |
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The inferior alveolar nerve (sometimes called the inferior dental nerve) is a branch of the mandibular nerve, which is itself the third branch (V3) of the trigeminal nerve (cranial nerve V).
Before traversing the mandibular foramen, it first gives...
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| x Suprascapular nerve |
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The suprascapular nerve arises from the upper trunk (formed by the union of the fifth and sixth cervical nerves). It innervates the supraspinatus muscles and infraspinatus muscles.
It runs lateralward beneath the Trapezius and the Omohyoideus, and...
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| x Recurrent laryngeal nerve |
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The recurrent (inferior) laryngeal nerve is a branch of the vagus nerve (tenth cranial nerve) that supplies motor function and sensation to the larynx (voice box). It travels within the endoneurium. It is the nerve of the 6th Branchial Arch.
It is...
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| x Otic ganglion |
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The otic ganglion is a small, oval shaped, flattened parasympathetic ganglion of a reddish-gray color, located immediately below the foramen ovale in the infratemporal fossa. It gives innervation to the parotid gland for salivation.
It is one of...
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| x Pterygopalatine ganglion |
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The pterygopalatine ganglion (Synonym: ganglion pterygopalatinum, meckel's ganglion, nasal ganglion, sphenopalatine ganglion) is a parasympathetic ganglion found in the pterygopalatine fossa. It is one of four parasympathetic ganglia of the head and...
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| x Auriculotemporal nerve |
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The auriculotemporal nerve is a branch of the mandibular nerve that runs with the superficial temporal artery and vein, and provides sensory innervation to various regions on the side of the head.
The auriculotemporal nerve arises as two roots from...
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| x Chorda tympani |
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The chorda tympani is a nerve that branches from the facial nerve (cranial nerve VII) inside the facial canal, just before the facial nerve exits the skull via the Stylomastoid foramen. It serves the taste buds in the front of the tongue, runs...
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| x Alderman's nerve |
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The auricular branch of the vagus nerve is often termed the Alderman's nerve or Arnold's nerve. The latter name is an eponym for Friedrich Arnold. It supplies sensory innervation to the skin of the ear canal.
It arises from the jugular ganglion, and...
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| x Tibial nerve |
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The tibial nerve is a branch of the sciatic nerve. The tibial nerve passes through the popliteal fossa to pass below the arch of soleus.
In the popliteal fossa the nerve gives off branches to gastrocnemius, popliteus, soleus and plantaris muscles,...
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| x Ciliary ganglion |
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The ciliary ganglion is a parasympathetic ganglion located in the posterior orbit. It measures 1–2 millimeters in diameter and contains approximately 2,500 neurons. Preganglionic axons from the Edinger-Westphal nucleus travel along the oculomotor...
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| x Ansa cervicalis |
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The ansa cervicalis (or ansa hypoglossi in older literature) is a loop of nerves that are part of the cervical plexus. It lies superficial to the internal jugular vein in the carotid sheath.
Branches from the ansa cervicalis innervate three of the...
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| x Buccal nerve |
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The buccal nerve (also called the long buccal nerve,) is a nerve in the face. It is a branch of the mandibular nerve (which is itself a branch of the trigeminal nerve) and transmits sensory information from skin over the buccal membrane (in general,...
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| x Great petrosal nerve |
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The greater (superficial) petrosal nerve is a nerve in the skull that branches from the facial nerve; it forms part of a chain of nerves that innervates the lacrimal gland. The fibres have synapses in the pterygopalatine ganglion.
The greater ...
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| x Lateral cord |
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The Lateral cord is a division of the brachial plexus.
The lateral cord gives rise to the following nerves:
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| x Sacral plexus |
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In human anatomy, the sacral plexus is a nerve plexus which provides motor and sensory nerves for the posterior thigh, most of the lower leg, the entire foot, and part of the pelvis. It is part of the lumbosacral plexus and emerges from the sacral...
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| x Common fibular nerve |
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The common fibular nerve (common peroneal nerve; external popliteal nerve; peroneal nerve; lateral popliteal nerve), about one-half the size of the tibial nerve, is derived from the dorsal branches of the fourth and fifth lumbar and the first and...
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| x Intercostal nerves |
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The intercostal nerves are the anterior divisions (rami anteriores; ventral divisions) of the thoracic spinal nerves from T1 to T11.
Each nerve is connected with the adjoining ganglion of the sympathetic trunk by a gray and a white ramus communicans...
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| x Cochlear nerve |
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The cochlear nerve (also auditory or acoustic nerve) is a nerve in the head that carries signals from the cochlea of the inner ear to the brain. It is part of the vestibulocochlear nerve, the 8th cranial nerve which is found in higher vertebrates;...
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| x Vestibular nerve |
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The vestibular nerve is one of the two branches of the Vestibulocochlear nerve (the cochlear nerve being the other). It goes to the semicircular canals via the vestibular ganglion. It receives positional information.
Axons of the vestibular nerve...
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| x Posterior cord |
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The posterior cord is a part of the brachial plexus. It consists of contributions from all of the roots of the brachial plexus.
The posterior cord gives rise to the following nerves:
MBBS resources http://mbbsbasic.googlepages.com/
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| x Medial cord |
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The Medial cord is a division of the brachial plexus.
The medial cord gives rise to the following nerves:
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| x Medial pectoral nerve |
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The medial pectoral nerve (medial anterior thoracic) arises from the medial cord of the brachial plexus and through it from the eighth cervical and first thoracic.
It passes behind the first part of the axillary artery, curves forward between the...
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| x Thoracodorsal nerve |
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The thoracodorsal nerve is a nerve present in humans and other animals. It is also known as the middle subscapular nerve or the long subscapular nerve. It supplies the latissimus dorsi muscle.
It arises from the brachial plexus. It derives its...
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| x Superficial fibular nerve |
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The superficial fibular nerve innervates the fibularis longus (also known as peroneus longus) and fibularis brevis (peroneus brevis) muscles and the skin over the greater part of the dorsum of the foot (with the exception of the first web space,...
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| x Maxillary nerve |
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The maxillary nerve (CN V2) is one of the three branches of the trigeminal nerve, the fifth cranial nerve. It comprises the principal functions of sensation from the maxillary, nasal cavity, sinuses, the palate and subsequently that of the mid-face,...
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| x Ophthalmic nerve |
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The ophthalmic nerve (V1) is one of the three branches of the trigeminal nerve, the fifth cranial nerve. The ophthalmic nerve carries only sensory fibers.
The ophthalmic nerve supplies branches to the cornea, ciliary body, and iris; to the lacrimal...
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| x Nasociliary nerve |
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The nasociliary nerve is a branch of the ophthalmic nerve. It is intermediate in size between the two other main branches of the ophthalmic nerve, the frontal nerve and the lacrimal nerve, and is more deeply placed.
The nasociliary nerve enters the...
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