Cranial Nerves and Muscle Innervation Quiz

A muscle located at the front of the Larynx, innervated by the superior laryngeal branch of the vagus nerve (CN X), responsible for lengthening the vocal cords

The inferior laryngeal branch of the vagus nerve (CN X) innervates a group of muscles located at the back of the Larynx

A suprahyoid muscle, one of the muscles above the hyoid bone, innervated by the facial nerve (CN VII), responsible for elevating the hyoid bone

A suprahyoid muscle, innervated by the facial nerve (CN VII) and the trigeminal nerve (CN V), responsible for elevating the hyoid bone and lowering the mandible

A suprahyoid muscle, innervated by the trigeminal nerve (CN V), responsible for depressing the mandible and elevating the hyoid bone

A suprahyoid muscle, innervated by the hypoglossal nerve (CN XII), responsible for depressing the mandible and elevating the hyoid bone

An infrahyoid muscle, located below the hyoid bone, innervated by the ansa cervicalis, responsible for depressing the hyoid bone

An infrahyoid muscle innervated by the ansa cervicalis, responsible for depressing the hyoid bone

The ophthalmic branch of the trigeminal nerve (CN V) is responsible for sensory innervation of the forehead, scalp, and upper eyelid.

The maxillary branch of the trigeminal nerve (CN V) provides sensory input to the upper teeth, maxillary sinus, lower eyelid, upper lip, and cheek.

The trigeminal nerve (CN V) is a mixed nerve with both sensory and motor functions. The sensory component is responsible for sensation in the face. The motor component is responsible for controlling muscles of mastication, like chewing.

The ophthalmic branch of the trigeminal nerve (CN V) also provides parasympathetic innervation (PSNS) to the lacrimal gland, controlling tear production.

The mandibular branch of the trigeminal nerve (CN V) is responsible for motor innervation of the muscles of mastication. The sensory component provides sensation to the lower teeth, chin, and anterior two-thirds of the tongue.

The trigeminal nerve (CN V) is responsible for sensation in the dura mater (a tough membrane covering the brain) of the middle cranial fossa, a part of the skull.

The trigeminal nerve (CN V) also contributes to the sensation of the hard and soft palate, which form the roof of the mouth, and the nasopharynx, which is the upper part of the throat.

The trigeminal nerve (CN V) can be affected by various conditions, causing pain, numbness, weakness, or other symptoms in the face. This can result from conditions like trigeminal neuralgia, a disorder causing intense facial pain, or nerve damage.

The glossopharyngeal nerve (CN IX) supplies general and special sensation to the posterior one-third of the tongue. This includes taste sensation.

The glossopharyngeal nerve (CN IX) carries taste sensation from the posterior one-third of the tongue. This is why you can taste the back of your tongue.

The glossopharyngeal nerve (CN IX) supplies motor innervation to the stylopharyngeus muscle. This muscle helps with swallowing and voice production.

The glossopharyngeal nerve (CN IX) innervates the carotid sinus and body, which are important for regulating blood pressure.

The glossopharyngeal nerve (CN ΙX) contributes to the otic ganglion through the lesser petrosal nerve. This ganglion innervates the parotid gland, responsible for saliva production.

The vagus nerve (CN X) innervates the external ear, external auditory canal, and part of the tympanic membrane. This makes it responsible for some sensation in the ear.

The vagus nerve (CN X) innervates the dura mater of the posterior cranial fossa, which is the tough outer layer of the brain.

The vagus nerve (CN X) plays a key role in controlling the heart, lungs, digestive system, and other visceral organs. This is why it's sometimes called the "wandering nerve."

This artery supplies blood to the orbit, eyeball, forehead, and nose.

Drains blood from the submental region, cheeks, lips, eyelids, conjunctiva, forehead, and scalp.

Drains blood from the lateral face and deep structures of the maxilla.

The Glossopharyngeal nerve (CN IX) innervates muscles of the pharynx except Tensor veli palatini, Palatoglossus, and all infrahyoid muscles. It is also responsible for some sensory functions like taste on the posterior tongue and sensation in the oropharynx.

The Vagus nerve (CN X) innervates muscles of the pharynx, larynx, and soft palate, except Tensor veli palatini and Palatoglossus, which are innervated by CN V and CN XII, respectively.

The Accessory nerve (CN XI) controls sternocleidomastoid and trapezius muscles, which are responsible for head rotation and shoulder elevation.

The Hypoglossal nerve (CN XII) is responsible for innervating intrinsic and extrinsic tongue muscles, except Palatoglossus which is innervated by CN X.

The external carotid artery supplies blood to superficial structures like cheeks, lips, nose, and the median corner of the eye.

The internal carotid artery supplies blood to deeper structures of the head like the brain, eyes, and the meninges.

The subclavian artery is the major artery supplying blood to the upper limbs, neck, and thoracic region.

The vertebral artery is one of the two main arteries supplying blood to the brain. It branches from the subclavian artery and travels through the vertebral canal before joining with the other vertebral artery to form the basilar artery.

The pterygopalatine fossa is a space in the skull that houses the pterygopalatine ganglion. It is related to the maxilla, palatine bone, and sphenoid bone.

The pterygopalatine ganglion is a parasympathetic ganglion that receives input from the facial nerve (CN VII) and sends output to various structures in the head and neck.

Sensory nerves transmit signals from sensory organs (like your skin) to the brain.

The sympathetic nervous system (SNS) is responsible for 'fight or flight' responses.

The parasympathetic nervous system (PSNS) is responsible for 'rest and digest' functions.

The nerve of the pterygoid canal is formed by the combination of parasympathetic and sympathetic nerves that enter the pterygopalatine ganglion.

The palatovaginal canal, sphenopalatine foramen, greater and lesser palatine canals are openings in the skull that allow nerves and blood vessels to pass through.

Nerves exiting the pterygopalatine ganglion carry both sensory and autonomic signals to target tissues.