Facial & Trigeminal Nerve

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What is one of the primary sensory regions supplied by the mandibular branch of the trigeminal nerve?

Lower face (correct)
Forehead
Nasal cavity
Upper lip

Which muscles are innervated by the motor component of the mandibular branch?

Biceps and triceps
Masseter and temporalis (correct)
Pectoralis major and minor
Sternocleidomastoid and trapezius

Which anatomical structure does the mandibular nerve exit the skull through?

Jugular foramen
Hypoglossal canal
Foramen magnum
Foramen ovale (correct)

What is a common application of the mandibular branch in dentistry?

Performing regional anesthesia for lower jaw procedures (A) Signup and view all the answers

Which area does NOT receive sensory innervation from the mandibular branch?

Upper teeth (D) Signup and view all the answers

What is a potential complication if the mandibular branch is damaged during oral surgery?

Persistent numbness (C) Signup and view all the answers

Which of the following nerves is a branch of the mandibular branch of the trigeminal nerve?

Inferior alveolar nerve (C) Signup and view all the answers

Which small muscles are innervated by the mandibular branch apart from the muscles of mastication?

Mylohyoid and tensor veli palatini (D) Signup and view all the answers

What type of function does the facial nerve primarily serve for the muscles of facial expression?

Motor innervation (C) Signup and view all the answers

Which branch of the facial nerve is responsible for taste sensation in the anterior two-thirds of the tongue?

Chorda tympani branch (D) Signup and view all the answers

What is the consequence of damaging the facial nerve related to the submandibular gland?

Altered saliva production (B) Signup and view all the answers

Why is careful management of the facial nerve important during dental procedures?

To prevent permanent paralysis of the facial muscles (C) Signup and view all the answers

The facial nerve is particularly important for what oral functions?

Facilitating lip movement and smile (A) Signup and view all the answers

Which gland does the facial nerve stimulate to produce tears?

Lacrimal gland (C) Signup and view all the answers

What type of innervation does the facial nerve provide to the stapedius muscle?

Motor innervation (D) Signup and view all the answers

Which type of sensation does the facial nerve NOT supply?

General sensation from the lower jaw (D) Signup and view all the answers

In dental anesthesia, why must the facial nerve be considered when blocking the inferior alveolar nerve?

It may lead to paralysis of facial expression muscles (D) Signup and view all the answers

Which condition can results from damage to the facial nerve besides loss of sensation?

Loss of ability to smile or frown (D) Signup and view all the answers

What distinguishes the mandibular branch of the trigeminal nerve from its other branches?

It has both sensory and motor functions. (B) Signup and view all the answers

Through which foramen does the mandibular branch of the trigeminal nerve exit the skull?

Foramen ovale (B) Signup and view all the answers

Which of the following muscles is NOT innervated by the mandibular branch of the trigeminal nerve?

Orbicularis oris (C) Signup and view all the answers

What area receives sensory innervation from the mandibular branch of the trigeminal nerve?

Anterior two-thirds of the tongue (general sensation) (A) Signup and view all the answers

Which of the following is a primary reason for the importance of the mandibular branch of the trigeminal nerve in dentistry?

It provides sensory innervation to the lower teeth and gums. (D) Signup and view all the answers

What are the major functions of the motor component of the mandibular nerve?

Mastication and innervating small muscles. (B) Signup and view all the answers

Which sensory area is NOT innervated by the mandibular branch of the trigeminal nerve?

Upper teeth (B) Signup and view all the answers

Which nerve block technique is commonly used in dentistry related to the mandibular branch?

Inferior alveolar nerve block (B) Signup and view all the answers

How does the mandibular branch contribute to dental diagnostics?

By helping with the sensation of pain. (B) Signup and view all the answers

Which of the following statements about the mandibular nerve is correct?

It branches into several nerves including the inferior alveolar nerve. (D) Signup and view all the answers

What type of neural structures primarily characterize the sensory component of the mandibular branch?

Sensory receptors. (D) Signup and view all the answers

What is the consequence of damage to the mandibular branch during dental surgery?

Persistent numbness and pain. (D) Signup and view all the answers

In addition to sensory functions, which other type of function does the mandibular nerve provide?

Motor functions for mastication. (C) Signup and view all the answers

Which anatomical structure does NOT receive sensory innervation from the mandibular branch?

The hyoid bone. (A) Signup and view all the answers

Mandibular Branch Function

The mandibular branch of the trigeminal nerve has both sensory and motor functions.

Sensory Function

Transmits information about touch, pain, and temperature from the lower face.