30 viva Questions and Answers related to the nerve supply to the Head and Neck

Sure, here are 30 viva questions and answers related to the nerve supply to the head and neck:

Q: What is the primary motor nerve responsible for the movement of facial muscles? A: The facial nerve (cranial nerve VII).
Q: Which cranial nerve is responsible for the sensation of the face? A: The trigeminal nerve (cranial nerve V).
Q: What are the three branches of the trigeminal nerve? A: Ophthalmic (V1), Maxillary (V2), and Mandibular (V3).
Q: Which nerve innervates the muscles of mastication? A: The mandibular branch of the trigeminal nerve (V3).
Q: What is the function of the glossopharyngeal nerve (cranial nerve IX) in the neck region? A: It provides sensory innervation to the posterior one-third of the tongue and the oropharynx.
Q: Which cranial nerve innervates the stylopharyngeus muscle? A: The glossopharyngeal nerve (cranial nerve IX).
Q: What is the role of the vagus nerve (cranial nerve X) in the neck? A: It innervates muscles of the pharynx and larynx and provides parasympathetic innervation to the thoracic and abdominal viscera.
Q: Which nerve is responsible for the motor innervation of the sternocleidomastoid and trapezius muscles? A: The accessory nerve (cranial nerve XI).
Q: What is the function of the hypoglossal nerve (cranial nerve XII) in the neck? A: It innervates the intrinsic and extrinsic muscles of the tongue.
Q: What is the function of the greater occipital nerve? A: It provides sensory innervation to the posterior part of the scalp.

Viva questions in Blood Supply of Head and Neck

Q: Which nerve is involved in the formation of the cervical plexus? A: The ventral rami of spinal nerves C1 to C4.
Q: What is the role of the ansa cervicalis in the neck? A: It is a loop of nerves formed by branches from the cervical plexus, innervating the infrahyoid muscles.
Q: Which nerve is responsible for the motor innervation of the diaphragm? A: The phrenic nerve (C3-C5).
Q: What is the clinical significance of the facial nerve in the neck? A: It travels through the parotid gland and is at risk during parotid surgery.
Q: What are the sensory branches of the facial nerve? A: The greater petrosal nerve and the chorda tympani.
Q: Which nerve is responsible for the sense of taste from the anterior two-thirds of the tongue? A: The chorda tympani (branch of the facial nerve).
Q: What is the course of the glossopharyngeal nerve in the neck? A: It passes between the internal jugular vein and the internal carotid artery.
Q: How does the vagus nerve contribute to the autonomic nervous system? A: It carries parasympathetic fibers to the thoracic and abdominal viscera.
Q: What are the branches of the facial nerve in the neck? A: Temporal, zygomatic, buccal, mandibular, and cervical branches.
Q: Which nerve is responsible for the gag reflex? A: The glossopharyngeal nerve (cranial nerve IX).

Viva questions in Anatomy of Head and Neck

Q: How does the hypoglossal nerve reach the tongue? A: It passes between the internal carotid artery and the internal jugular vein.
Q: Which nerve provides motor innervation to the muscles of facial expression? A: The facial nerve (cranial nerve VII).
Q: What is the function of the auriculotemporal nerve? A: It provides sensory innervation to the external ear and the skin over the temporal region.
Q: Which nerve innervates the posterior belly of the digastric muscle and the stylohyoid muscle? A: The facial nerve (cranial nerve VII).
Q: What is the role of the trigeminal nerve in the jaw reflex? A: It mediates the jaw reflex, which is a stretch reflex of the jaw muscles.
Q: How does the spinal accessory nerve reach the trapezius muscle? A: It descends deep to the sternocleidomastoid muscle before reaching the trapezius.
Q: What is the significance of the ansa cervicalis in surgery? A: It is important in surgical procedures involving the neck, especially those involving the thyroid gland.
Q: Which nerve carries the preganglionic parasympathetic fibers to the otic ganglion? A: The glossopharyngeal nerve via the lesser petrosal nerve.
Q: What is the role of the cervical sympathetic chain in the neck? A: It carries sympathetic fibers and participates in the sympathetic innervation of the head and neck.
Q: How can damage to the facial nerve affect facial expressions? A: Damage to the facial nerve can result in facial weakness or paralysis on one side, affecting facial expressions such as smiling and closing the eye on the affected side.