Definition of couth. good or someone that is cool. In contrast to uncouth: bad or someone that is stupid.His ass is so couth!
Chapter 7 - Lower cranial nerve function. The lower cranial nerves are involved in pharyngeal and laryngeal function as well as in movements of the neck and tongue. Damage usually manifests as problems with speech and swallowing. These nerves arise from the medulla and, in the case of the accessory nerve (CN XI), the spinal cord. These nerves are commonly affected by conditions damaging the medulla, but bilateral damage to corticobulbar connections can create motor problems that affect tongue and pharynx movement and speech.
Damage to the hypoglossal nerve causes difficulties in speech and swallowing; if both nerves are impaired, the person cannot protrude the tongue; if only one side is affected, the tongue deviates (leans) toward affected side.Eventually the paralyzed side of the tongue begins to atrophy (get smaller) from lack of use.-Olfactory Nerve. is a sensory nerve (a nerve carrying sensation information to the brain) that arises in the nasal mucosa (up through the olfactory foramina of the cribriform plate) and conveys impulses for the sense of smell to the brain.