What nerve Innervates the Puborectalis muscle?

What nerve Innervates the Puborectalis muscle?

The origin of the puborectalis fibers is at the posterior surface of the pubis while their insertion is at the midline sling posterior to the rectum. The muscle band is innervated by perineal branches of the S3 and S4 nerve roots.

Which cranial nerve Innervates the tongue?

The hypoglossal nerve (CN XII) provides motor innervation to all of the intrinsic and extrinsic muscles of the tongue except for the palatoglossus muscle, which is innervated by the vagus nerve (CN X). It runs superficial to the hyoglossus muscle.

What muscle elevates the tongue?

Palatoglossus: arises from the palatine aponeurosis and inserts across the tongue. It elevates the posterior portion of the tongue. It is the only muscle innervated by the vagus nerve (CN X).

Which muscle causes protrusion of the tongue?

The genioglossus (GG) muscle, which causes tongue protrusion, is innervated by the medial XIIth branch, while the hyoglossus (HG) and styloglossus (SG) muscles, which cause retraction of the tongue, are innervated by the lateral XIIth branch.

What are the 3 levator ani muscles?

The major function of the levator ani muscle is supporting and raising the pelvic visceral structures. It also helps in proper sexual functioning, defecation, urination, and allowing various structures to pass through it. It is composed of three parts puborectalis, pubococcygeus ad the iliococcygeus muscle.

What nerve controls levator?

Levator ani muscles receive innervations from both sacral efferent and pudendal nerves (2,3). The S2–S4 sacral nerves innervate the pelvic or superior surface of these muscles, while branches of the pudendal nerve innervate the perineal or inferior surface.

Does tongue have nerves?

The tongue has many nerves that help detect and transmit taste signals to the brain. Because of this, all parts of the tongue can detect these four common tastes; the commonly described “taste map” of the tongue doesn’t really exist.

What muscles shorten the tongue?

Intrinsic Muscles The superior longitudinal muscles run along the tongue just below the superior surface’s mucosa. These muscles shorten the tongue and dorsiflex its tip. The inferior longitudinal muscles are basically the inferior surface equivalent of the SL muscle.

Can levator ani syndrome be cured?

As levator ani syndrome is a chronic condition, there is no known cure. However, with proper management over time, the symptoms can become less severe, less frequent, or both. Those who are experiencing chronic or recurrent periods of anal or rectal pain or discomfort should consult a doctor.

Can levator ani syndrome go away on its own?

After conducting a medical history, rectal examination, stool samples, and other necessary physical examinations, a doctor may determine that levator ani syndrome is the answer. The good news is this condition is rarely serious and it can even go away on its own in some circumstances.

How does the inferior longitudinal muscle of the tongue work?

Like all the intrinsic muscles of the tongue, it is innervated by the hypoglossal nerve (CN XII). The fibers act to curl the apex and lateral sides of the tongue downwards and when acting together with the superior longitudinal muscle of the tongue it shortens and retracts the tongue when protruded (i.e. retrudes the tongue).

Where are the extrinsic muscles of the tongue located?

All of the intrinsic and extrinsic muscles are innervated by the hypoglossal nerve (CN XII), except palatoglossus, which has vagal innervation (CN X). Fig 1 – The extrinsic muscles of the tongue.

Where does the innervation of the tongue take place?

Inserts into the body of the hyoid bone and the entire length of the tongue. Innervation: Motor innervation via the hypoglossal nerve (CNXII). Innervation: Motor innervation via the hypoglossal nerve (CNXII). Innervation: Motor innervation via the hypoglossal nerve (CNXII). Innervation: Motor innervation via the vagus nerve (CNX).

What are the muscles and taste buds of the tongue?

Muscles and taste sensation of the tongue 1 The hypoglossal nerve (CN XII) 2 The facial nerve (CN VII) 3 The glossopharyngeal nerve (CN IX) 4 The vagus nerve (CN X)