The glossopharyngeal nerve provides motor function to the stylopharyngeus muscle. Located in the pharynx, which is the portion of your throat behind the nose and mouth, this muscle is involved in ...

Find out what you need to know about the trochlear nerve. Discover its functions, location, and related health conditions.

Find out what you need to know about your facial nerves and their function. Learn how these nerves can affect your health.

Both real and fake smiles depend on cranial nerve VII, also known as the facial nerve, which sends signals from the brain to the muscles of facial expression.

Facial paralysis occurs when a nerve that controls your facial movements becomes damaged. As a result, a portion of your face may feel weak, or you may be unable to move it. Some types of facial ...

The facial nerve provides motor innervation to the muscles involved in facial expression and also innervates the lacrimal and salivary glands. 5 To assess the function of the facial nerve, begin ...

For example, the olfactory nerve is essential for detecting smells. The functions of the cranial nerves are sensory, motor, or both. Sensory cranial nerves help a person see, smell, and hear.

Bell's palsy is facial nerve disorder that causes weakness of the muscles on one side of the face. Its cause is unknown but most people make a full recovery within 8 to 12 weeks.

When the facial nerve fires, the signal is directed to the ipsilateral facial muscles causing muscle contractions in different areas of the face on the same side. A competing hypothesis states that ...

Each arch contains an external covering of ectodermal tissue; a middle core of mesodermal tissue, which will form nerve, muscle, and cartilage; and an inner covering of endoderm.

Hemifacial spasms happen when the muscles on either the left or right side of your face twitch without warning. This is caused by damage or irritation to the facial nerve, also known as the ...