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.
All the intrinsic muscles of the tongue are innervated by the hypoglossal nerve. These muscles are the transversus, verticalis and longitudinalis linguae muscles. The intrinsic tongue muscles are used to elongate the protruding tongue and to control fine shaping movements needed for manipulating food and for speech.he areas innervated by the hypoglossal nerve consist of almost all the muscles of the tongue. Find out the details of the hypoglossal nerve's function. slide 1 of 5. The hypoglossal nerve is the twelfth and final cranial nerve (XII).