Which cranial nerve affect swallowing?
The glossopharyngeal nerve enervates muscles involved in swallowing and taste. Lesions of the ninth nerve result in difficulty swallowing and disturbance of taste. The vagus nerve enervates the gut (gastrointestinal tract), heart and larynx.
What does the 11th cranial nerve control?
The accessory nerve, also known as the eleventh cranial nerve, cranial nerve XI, or simply CN XI, is a cranial nerve that supplies the sternocleidomastoid and trapezius muscles. It is classified as the eleventh of twelve pairs of cranial nerves because part of it was formerly believed to originate in the brain.
Which facial nerve is responsible for swallowing?
| Cranial nerve | Sensory innervation |
|---|---|
| CN VII facial | Taste to the anterior two-thirds of the oral tongue Sensation to the facial muscles |
| CN IX glossopharyngeal | Receives input from tonsils, pharynx, posterior tongue Supplies taste to the posterior one-third of the tongue |
| CN X vagus | Sensation to the pharynx, larynx, trachea |
What nerve Innervates swallowing?
The glossopharyngeal nerve is the ninth set of 12 cranial nerves (CN IX). It provides motor, parasympathetic and sensory information to your mouth and throat. Among its many functions, the nerve helps raise part of your throat, enabling swallowing.
What nerve helps you swallow?
The vagus nerve also has both motor and sensory components. The sensory component is primarily represented by the superior laryngeal nerve, which provides sensation across the epiglottis, false vocal folds, and portions of the pyriform sinus.
What triggers swallowing reflex?
The sucking-swallowing reflex is triggered by various stimuli: sensitive, tactile, olfactory gustative, and neurohormonal generated in the hypothalamus and limbic system, and gastric tube (pancreas and stomach).
What cervical nerves control swallowing?
The vagus nerve is involved in all three phases of swallowing as it innervates most of the the pharynx and larynx mucosal surfaces as well as the muscle that elevate the palate and cause the larynx to contract.
What initiates the swallowing reflex?
The swallowing center in the medulla oblongata initiates the deglutition reflex and causes progressive contraction of the pharyngeal muscles to continue to propel the food bolus.
What nerve is responsible for swallowing?
The vagal nerve (VN), the tenth cranial nerve, provides both motor and sensory innervation, and plays an important role in the pharyngeal phase of swallowing [4, 6]. The motor fibers of the VN innervate all striated muscles of the larynx and pharynx, except the stylopharyngeus muscle and the tensor veli palatini muscle, which are innervated by the GN and by the TN, respectively.
What nerves control swallowing?
The following cranial nerves are involved in swallowing: Trigeminal (cranial nerve V) Facial (cranial nerve VII) Glossopharyngeal (cranial nerve IX) Vagus (cranial nerve X) Hypoglossal nerve (cranial nerve XII) In turn, cranial nerves are controlled by “processing centers” in the brain where information related to swallowing is processed.
What nerve controls swallowing?
Trigeminal (cranial nerve V)
Which cervical nerve controls swallowing?
– Swallowing difficulties can be a degenerative disorder of weakened cervical neck ligaments – Weakened cervical neck ligaments cause neck instability – Neck instability causes abnormal motion in the cervical vertebrae – Abnormal motion causes bone spurs – Bone spurs cause swallowing difficulties.