what are low lying cerebellar tonsils?
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Low-lying tonsils, sometimes also called benign tonsillar ectopia, is a subtype of cerebellar tonsillar ectopia denoting asymptomatic and only slight downward descent of the cerebellar tonsils through the foramen magnum and is distinct from Chiari I malformations.
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The tonsils (palatine tonsils) are a pair of soft tissue masses located at the rear of the throat (pharynx). Each tonsil is composed of tissue similar to lymph nodes, covered by pink mucosa (like on the adjacent mouth lining). Running through the mucosa of each tonsil are pits, called crypts.
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submandibular lymph nodes. The submandibular lymph nodes sit between the submandibular salivary glands, which are underneath the tongue, and the mandible, or lower jawbone. Occasionally one or more of the lymph nodes may be embedded deep within the salivary gland.
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The larynx, commonly called the voice box or glottis, is the passageway for air between the pharynx above and the trachea below. It extends from the fourth to the sixth vertebral levels. The larynx is often divided into three sections: sublarynx, larynx, and supralarynx.
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A common cause of dizziness when lying down is benign paroxysmal positional vertigo, a condition where tiny crystals that help sense gravity in one part of the ear mistakenly move into parts of the inner ear that detect head motion.
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['The cerebrum fills up most of your skull. It is involved in remembering, problem solving, thinking, and feeling. ... ', 'The cerebellum sits at the back of your head, under the cerebrum. It controls coordination and balance.', 'The brain stem sits beneath your cerebrum in front of your cerebellum.']
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Tonsils are lymphoid nodules located along the inner surface of the pharynx and are important in developing immunity to oral pathogens (Figure 9). The tonsil located at the back of the throat, the pharyngeal tonsil, is sometimes referred to as the adenoid when swollen.
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What Are Tonsil Stones? Tonsil stones, or tonsilloliths, are hard, sometimes painful bits of bacteria and debris that get stuck in nooks on your tonsils. Your tonsils are gland-like structures in the back of your throat. You have one on each side.
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Lower motor neurons (LMNs) are motor neurons located in either the anterior grey column, anterior nerve roots (spinal lower motor neurons) or the cranial nerve nuclei of the brainstem and cranial nerves with motor function (cranial nerve lower motor neurons).
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['Red, swollen tonsils.', 'White or yellow coating or patches on the tonsils.', 'Sore throat.', 'Difficult or painful swallowing.', 'Fever.', 'Enlarged, tender glands (lymph nodes) in the neck.', 'A scratchy, muffled or throaty voice.', 'Bad breath.']
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The tonsils can be seen on either side of the throat at the back of the mouth. The adenoids are higher in the throat and usually cannot be seen. The uvula is the small, finger-shaped piece of tissue that hangs down from the soft palate in the back of the throat.
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Impact and Significance of Sleep-Related Palatal Myoclonus Ocular myoclonus may disappear during NREM sleep and recur or appear only during REM sleep in some. PM can be idiopathic or secondary to acquired brainstem or cerebellar disease.
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The nasopharynx is the portion of the pharynx that is posterior to the nasal cavity and extends inferiorly to the uvula. The oropharynx is the portion of the pharynx that is posterior to the oral cavity. ... The pharyngeal, palatine, and lingual tonsils are located in the pharynx. They are also called Waldereyer's Ring.
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Tonsils are graded on a scale from 0 to 4. Zero means you've had them removed, 1 means they're barely visible, 2 means they're normal, 3 means they're large and just about touching that thing that hangs down at the back of your throat called the uvula, and 4 means they're ginormous.
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Tonsil stones, or tonsiliths, are calcium deposits that form in small cracks in the tonsils. They occur due to a buildup of food particles, mucus, and bacteria. They may appear as white or sometimes yellow spots on the tonsils.
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Different Shape and Size The cerebrum is more elongated in sheep than in humans, and the cerebellum and brain stem are located behind the cerebrum, instead of being tucked below it. This is because sheep, being four-legged animals, have a horizontal spine, while humans stand upright with their spines vertical.
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Tonsillitis is an infection and inflammation of the tonsils, which are two lymph nodes at the back of the throat. Tonsillitis is a common cause of painful swallowing. Tonsillitis is a contagious condition. Viruses or bacterial infections, including strep throat, can cause tonsillitis.