which cranial nerve elevates the uvula
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- Lesions of the vagus nerve result in uvular deviation AWAY from the lesion. In this example, the tongue deviates to the patient's left, so the left hypoglossal nerve is involved. The uvula deviates to the right with left posterior pharynx stimulation, so the left vagus nerve is involved. The other choices are incorrect. Report Abuse. * Re:uvula deviates to the right.
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Cranial Nerves - Anatomy & Physiology The vagus nerve is part of the group of cranial nerves responsible for innervation of structures derived from the branchial arches. It is also part of a group together with the glossopharyngeal and accessory nerves that passes through the jugular foramen which is termed the vagus group.
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Cranial Nerves CN IV (name, function, S/M/B, cranial entrance/exit). Name: Trochlear nerve Func: moves eyeball inferiorly and laterally (SO4) S/M/B: Motor Exit: superior orbital fissure (only nerve to emerge dorsally from midbrain).   .
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Cranial nerves The  cranial nerves provide motor and sensory innervation mainly to the structures within the head and neck. The vagus nerve (X) provides sensory and autonomic (parasympathetic) motor innervation to structures in the neck and also to most of the organs in the chest and abdomen.
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Oculomotor nerve The oculomotor nerve is the third cranial nerve. It enters the orbit via the superior orbital fissure and innervates muscles that enable most movements of the eye and that raise the eyelid.he inferior branch of the oculomotor nerve or the inferior division, the larger, divides into three branches. 1  One passes beneath the optic nerve to the medial rectus. 2  Another, to the inferior rectus. 3  The third and longest runs forward between the inferior recti and lateralis to the inferior oblique.
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- The median nerve runs vertically through the antecubital fossa, so by palpating before withdrawing blood, to ensure a vein is used rather than an artery, it should be possible to avoid injury to the median nerve.
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Chapter 6 - Brain Stem Organization The pharynx and larynx. Patients with cranial nerve damage often have problems with their voice or with swallowing. The nucleus ambiguus is the location of the majority of the motor neurons to the larynx, pharynx and soft palate. These fibers travel with the vagus and, to a lesser extent, the glossopharyngeal nerve.
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Cranial Nerves of the Face and Mouth: Motion and Sensation Functionality Hence, while CN VII provides motor movement for the muscles of facial expression, CN V is the most important nerve in facial sensation. In addition, CN V is the nerve that innervates the muscles that help move your jaw up and down in order to chew that savory steak. Hence, CN V innervates the muscles of mastication.
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Cranial Nerves - Anatomy & Physiology Cranial nerves related to the innervation of the head muscles include the oculomotor, trochlear, abducens and the hypoglossal nerves. Cranial nerves related to innervation of structures originating from branchial arches include the trigeminal, facial, glossopharyngeal, vagus and accessory nerves.
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Trochlear nerve Trochlear nerve. From Wikipedia, the free encyclopedia. The trochlear nerve, also called the fourth cranial nerve or cranial nerve IV, is a motor nerve (a somatic efferent nerve) that innervates only a single muscle: the superior oblique muscle of the eye, which operates through the pulley-like trochlea.rochlear nerve. From Wikipedia, the free encyclopedia. The trochlear nerve, also called the fourth cranial nerve or cranial nerve IV, is a motor nerve (a somatic efferent nerve) that innervates only a single muscle: the superior oblique muscle of the eye, which operates through the pulley-like trochlea.
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What Is the Function of the Uvula? The uvula is also important during the act of swallowing; it prevents pieces of food from entering the nasal cavity. Its prolific saliva production also makes food easier to swallow. Health Medicine Magazine also suggests that the uvula is responsible for the gag reflex.
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What are the Cranial Nerves? Hypoglossal: motor nerve – moves the tongue in speaking, chewing and swallowing. The four cranial nerves involved in vision and movement of the eyes are the optic (I) nerve, oculomotor (III) nerve, trochlear (IV) nerve and the abducen (VI) nerve. The optic nerve is the sensory nerve for vision. It transmits information from the eyes to the brain.
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- 1 Sore Throat due to infection or irritation that can contribute in having swollen uvula. 2  Headache due to the irritation in the uvula. 3  Throat Irritation can irritate the uvula and it can lead in inflammation. 4  There is a feeling to vomit because the irritation of the uvula the gag reflex is stimulated.
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The 12 Cranial Nerves Cranial Nerve V: The Trigeminal Nerve Stemming from the lateral superior margin of the left and right side of the pons, this nerve branches into three: V/I ophthalmic, V/II maxillary and V/III mandibular nerves. These branches exit the skull through the superior orbital fissure (V/I), the foramen rotundum (V/II) and the foramen ovale (V/III). This nerve governs the sensory innervation of the face, sinuses and teeth.
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- Cranial nerves: The nerves of the brain, which emerge from or enter the skull (the cranium), as opposed to the spinal nerves, which emerge from the vertebral column. There are 12 cranial nerves, each of which is accorded a Roman numeral and a name: 1  Cranial nerve I: the olfactory nerve. 2  Cranial nerve II: the optic nerve. 3  Cranial nerve III: the oculomotor nerve. 4  Cranial nerve IV: the trochlear nerve. 5  Cranial nerve V: the trigeminal nerve. 6  Cranial nerve VI: the abducent nerve.
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Trochlear nerve The trochlear nerve is also known as cranial nerve IV (CN-IV). It is the only cranial nerve that emerges dorsally from the brain (near the back), giving it the longest pathway. It is the smallest nerve to service the eye. CN-IV passes through the superior orbital fissure, and it provides motor function, or movement.
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Trochlear nerve The trochlear nerve, also called the fourth cranial nerve or cranial nerve IV, is a motor nerve (a somatic efferent nerve) that innervates only a single muscle: the superior oblique muscle of the eye, which operates through the pulley-like trochlea. The trochlear nerve is unique among the cranial nerves in several respects: 1  It is the smallest nerve in terms of the number of axons it contains. 2  It has the greatest intracranial length. 3  It is the only cranial nerve that exits from the dorsal (rear) aspect of the brainstem.
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Ocular Movement Oculomotor Nerve - CN III; Trochlear Nerve – CN IV; Abducent CN VI Oculomotor Nerve – CN III. The motor component of the oculomotor nerve innervates the ipsilateral dorsal, ventral, medial recti muscles as well as the ventral oblique muscle; these muscles are predominantly important for medial movement of each eye but also a dorso-medial and ventral movement is enabled.
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Anatomy and Function of the Uvula The uvula is the elongated hanging structure visible at the back of the throat. It is sometimes called the hanging ball in the throat and is suspended above the tongue. Ask a Doctor Online Now! The roof of the mouth is divided into two sections – the hard palate at the front and the soft palate at the back. The uvula hangs from the middle of the soft palate and lies a short distance above the back of the tongue. It is composed of mucus membranes, connective tissue and muscle and it is flexible to ensure that it can fulfil its functions. Sometimes, the uvula may be naturally elongated, short (stump) or divided into two lobes (bifid or cleft uvula). Functions. It blocks the passage into the nasal cavity when swallowing.
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Cranial Nerves The vagus nerve (also called pneumogastric nerve or cranial nerve X) is the tenth of twelve paired cranial nerves, and is the only nerve that starts in the brainstem (within the medulla oblongata) and extends, through the jugular foramen, down below the head, to the abdomen.he vagus nerve (also called pneumogastric nerve or cranial nerve X) is the tenth of twelve paired cranial nerves, and is the only nerve that starts in the brainstem (within the medulla oblongata) and extends, through the jugular foramen, down below the head, to the abdomen.
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Trochlear nerve Trochlear nerve. From Wikipedia, the free encyclopedia. The trochlear nerve, also called the fourth cranial nerve or cranial nerve IV, is a motor nerve (a somatic efferent nerve) that innervates only a single muscle: the superior oblique muscle of the eye, which operates through the pulley-like trochlea.he trochlear nerve carries axons of type GSE, general somatic efferent, which innervate skeletal muscle of the superior oblique muscle. The superior oblique muscle ends in a tendon that passes through a fibrous loop, the trochlea, located anteriorly on the medial aspect of the orbit.
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- The vagus nerve lies in the posterior angle formed between the internal jugular vein and the carotid artery (Giovagnorio and Martinoli, 2001). Location of the vagus nerve in the anterior angle is rare (0.7% of healthy subjects, Giovagnorio and Martinoli, 2001).he vagus nerve lies in the posterior angle formed between the internal jugular vein and the carotid artery (Giovagnorio and Martinoli, 2001). Location of the vagus nerve in the anterior angle is rare (0.7% of healthy subjects, Giovagnorio and Martinoli, 2001).
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- Together with the abducens nerve, the sixth cranial nerve, the trochlear nerve helps the eye move in a lateral (toward the midline) direction. The trochlear nerve controls the superior oblique muscle, which is one of the six extraocular muscles that influence eye movement.he superior oblique muscle allows the eye to move toward the midline of the body and downward simultaneously. In other words, using the superior oblique muscles will cause the eyes to become crossed.. If the trochlear nerve is harmed, a condition called trochlear nerve palsy (or fourth nerve palsy) may result.
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- 72-year-old male with a history of a previous stroke comes to the physician for an annual exam. When the patient sticks out his tongue, you note that it deviates to the left. In addition, when the left posterior pharynx is stimulated with a cotton swab, the uvula deviates to the right. Which cranial nerves are involved?
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uvula (also palatine uvula), a cone-shaped extension of the soft palate in humans and some anthropoid apes. The uvula departs from the middle of the posterior margin of the palate and proceeds with the apex downward. It is covered by a mucous membrane. The anterior side of the uvula faces the mouth, and the posterior side the nasopharynx.