What nerves control the masticatory muscles and facial muscles

The masticatory muscles are controlled by the trigeminal nerve, and the facial muscles are controlled by the facial nerve.

The masticatory muscles, located between the lower mandible and the upper temporal, maxillary, zygomatic, and sphenoid bones, are the main muscles of the motor temporomandibular joint for mastication, including the masseter, temporal, extrapterygoid and internal pterygoid muscles. The masticatory muscles are innervated by the mandibular nerve branch of the trigeminal nerve and are supplied by branches of the maxillary artery and the superficial temporal artery.

The facial muscles start from the skull and end on the face**. When the face is contracted, folds appear on the face and change the shape of the mouth and eyes, to express various feelings such as joy, anger, sadness, and happiness, and to participate in activities such as speech and chewing. The facial muscles are vascular, with abundant blood circulation, and are innervated by the branches of the facial nerve.

The masticatory muscles are made up of the trigeminal nerve.

mandibular nerve branch innervation; The facial muscles are innervated by the facial nerve.

The masticatory muscles are located below the mandible.

Same as superior temporal bone.

Between the maxilla, zygomatics, and sphenoid bones, the masticatory muscles are the temporomandibular joint.

The main muscle, the masticatory muscle, occurs in the branches of the mandibular nerve and is controlled by the branches of the mandibular nerve. The trigeminal nerve, which branches from the maxillary artery and the superficial temporal artery**. The masticatory muscles include: masseter, temporal, extrapterygoid and internal pterygoid muscles.

The facial muscles are mainly distributed around the eyes, nose and mouth, and are annular or radial, the annular muscles have the function of obturator holes, and the radiated muscles have the function of opening large holes. There are frontalis, temporal, buccal, occipital, orbicularis oris muscles.

orbicularis oculi muscle, etc. Facial muscles are innervated by the facial nerve, so facial nerve injury causes facial nerve palsy.

Peripheral paralysis is different from central paralysis.

Expression muscle movement: mainly innervated by the facial nerve, in addition, the facial nerve also conducts the anterior tongue 2 3 taste sensation, etc. The superior nucleus of the facial nerve nucleus is innervated by the bilateral cortical brainstem tracts, and the inferior nuclei are innervated only by the contralateral cortical brainstem tracts.

Masticatory muscle movement: completed by the temporalis and masseter muscles innervated by the motor branch of the trigeminal nerve.

Facial sensation: The sensory fibers of the head, face and five senses constitute the ophthalmic branch, maxillary branch and mandibular branch of the trigeminal nerve, which enter the skull through the superior orbital fissure, the garden foramen and the oval foramen respectively to the semilunar ganglia, and then to the corresponding nerve nucleus of the pontine brain, sending out fibers that rise and cross to the contralateral thalamus and the lower part of the posterior gyrus.

Trigeminal nerve (sensory).

Facial nerve (motor).

The nerve that innervates the masticatory muscles to touch the locust is the slower sakura jaw nerve ().

a.Right. b.Wrong.

Correct Answer: a

The masticatory muscles mainly include the masseter muscle and the temporalis muscle.

1) Masseter muscle: starts from the zygomatic arch and ends posteriorly and down outside the mandibular angle (masseter tuberosity).

2) Temporal muscle: It starts from the rough surface of the temporal fossa and ends at the coronal process of the mandible.

When the masseter muscle and temporalis muscle contract and wither, the mandible can be lifted to make the upper and lower teeth occlusive.