In humans, the region is innervated by the buccal nerve.

This can lead to paralysis of the muscles innervated by the compressed nerve.

The muscles of the tongue are innervated by the hypoglossal nerve.

In modern texts, these two regions are often considered to be innervated by the genitofemoral nerve.

In all cases, the facial pit is innervated by the trigeminal nerve.

Another way to remember which nerves innervate which muscles is to understand the meaning behind all of the Latin words.

The ulnar nerve innervates the remaining intrinsic muscles of the hand.

In humans, the nipple is innervated by the fourth intercostal nerve.

In addition, many muscles of the forearm are innervated by the radial nerve and may lose function for some time.

The first and second lumbricals (the most radial two) are innervated by the median nerve.