Facial nerve is the 7th cranial nerve.
It has an Intracranial and extracranial course. So branches must be named accordingly as:
Branches in the cranial cavity
Branches outside the cranial cavity
I will post the answer after 2 days...till then the reader can ponder on the question
You are speaking of the 12 cranial nerves:I. Olfactory nerve which branches out of the telencephalonII. Optic which branches out of the diencephalonIII. Oculomotor nerve which branches out of the mesencephalonIV. Trochlear nerve nerve which branches out of the mesencephalonV. Trigeminal nerve which branches out of the ponsVI. Abducens nerve which branches out of the ponsVII. Facial nerve which branches out of the ponsVIII. Vestibulochochlear nerve which branches out of the ponsIX. Glossopharangeal nerve nerve which branches out of the medullaX. Vagus nerve nerve which branches out of the medullaXI. Accessory nerve nerve which branches out of the medulla & cervical spineXII. Hypoglossal nerve nerve which branches out of the medulla
The facial muscles are innervated by facial nerve (cranial nerve VII). In contrast, the nearby masticatory muscles are innervated by the mandibular nerve, a branch of thetrigeminal nerve (V).
Damage to the facial nerve (cranial nerve VII) can result in drooping of the mouth on one side, a condition known as facial paralysis or Bell's palsy. This nerve controls the muscles of facial expression, including those involved in smiling, frowning, and closing the eyes.
The facial nerve starts to branch at the geniculate ganglion, which is located just after the nerve exits the internal acoustic meatus of the temporal bone in the skull. From the geniculate ganglion, the facial nerve gives rise to branches that innervate different muscles of the face as well as the lacrimal and salivary glands.
external maxillary nerve.
The facial nerve (cranial nerve VII) passes through the parotid gland, but it does not innervate it. Instead, it branches within the gland to supply the muscles of facial expression. Additionally, it travels through the stylohyoid and digastric muscles before reaching the face.
The Trigeminal Nerve is located in a structure in the brain stem called the pons.
The Facial Nerve or Cranial Nerve VII is the nerve involved with Bell's Palsy.
Because Nerve branches from the middle of the arm
The nerve that controls eye squinting is the facial nerve, specifically the temporal and zygomatic branches. These branches innervate the orbicularis oculi muscle, which is responsible for closing the eyelids and squinting. Squinting can help protect the eyes from bright light and improve focus on objects.
It takes 43 muscles to form a smile, but there are too many nerves involved to provide an exact number. The facial muscles are innervated by the facial nerve (CN VII), which branches out into numerous smaller nerves that control specific movements in the face.
During a rhytidectomy, or facelift procedure, the facial nerve (CN VII) should be carefully avoided. This nerve controls the muscles of facial expression, and inadvertent injury can lead to facial asymmetry and functional impairment. Surgeons typically identify and preserve the nerve branches to minimize complications and ensure optimal cosmetic results. Proper surgical technique and anatomical knowledge are crucial for protecting this nerve during the procedure.