Cranial Nerves Quiz

The supraorbital nerve is a sensory nerve that originates from the frontal branch of the ophthalmic nerve. It emerges through the supraorbital notch or foramen, located about two fingers from the midline of the forehead, and supplies the middle portion of the upper eyelid, then ascends to supply the skin of the forehead and scalp up to the lambdoid suture.

The supratrochlear nerve is a sensory nerve that originates from the frontal branch of the ophthalmic nerve in the orbit. It emerges near the supraorbital margin, about one finger's breadth from the midline, and supplies the medial part of the upper eyelid, the forehead, and the anterior portion of the scalp up to the coronal suture.

The zygomaticotemporal nerve is a sensory nerve that originates from the zygomatic branch of the maxillary nerve in the orbit. It emerges from the zygomaticotemporal foramen, which is located in the temporal bone, and supplies the anterior part of the temple.

The scalp is supplied by 20 nerves, 10 on each side. 5 nerves enter the scalp in front of the auricle, and 5 enter behind the auricle.

The supraorbital, supratrochlear, and zygomaticotemporal nerves are all sensory nerves that supply the forehead and scalp. These nerves originate from the ophthalmic and maxillary branches of the trigeminal nerve, which is the fifth cranial nerve responsible for sensations in the face.

The third occipital nerve is a sensory nerve that originates from the posterior ramus of the third cervical nerve (C3). It travels through the trapezius muscle and supplies the skin over the back of the neck and the external occipital protuberance.

The facial nerve's post-auricular branch is a motor nerve responsible for controlling the movement of two muscles: the occipital belly of the occipitofrontalis muscle and the posterior auricularis muscle. It stems from the facial nerve after it exits the stylomastoid foramen and travels behind the auricle.

The third occipital nerve originates from the third cervical nerve (C3) and branches off from its posterior ramus.

The post-auricular branch of the facial nerve arises from the facial nerve after it exits the stylomastoid foramen. It travels upward and backward behind the auricle.

The third occipital nerve is a sensory nerve, meaning it carries information about sensation from the skin to the brain. The post-auricular branch of the facial nerve is a motor nerve, controlling the movement of muscles located at the back of the head and ear.

A nerve that arises from the cervical plexus, specifically from C2 and C3, and provides sensory innervation to a small region behind the ear, the lower part of the ear, and the skin above the parotid gland and angle of the mandible. It emerges in the middle of the posterior border of the sternocleidomastoid muscle.

A nerve that arises from the cervical plexus, specifically from C2, and provides sensory innervation to the upper half of the skin on the posterior aspect of the head and neck. It emerges, alongside the Great Auricular Nerve, in the middle of the posterior border of the sternocleidomastoid muscle.

A nerve that originates from the posterior primary ramus of C2, and provides sensory innervation to most of the scalp's back region. It appears in the suboccipital triangle and pierces the trapezius muscle.

One of the five terminal branches of the facial nerve, specifically responsible for motor control of facial expressions. It emerges from the upper end of the parotid gland, and is responsible for controlling the frontal belly of the occipitofrontalis muscle, part of the orbicularis oculi muscle, and the auricular muscles.

A sensory nerve arising from the posterior division of the mandibular nerve, and responsible for providing sensory innervation to the posterior temporal region, the upper half of the external auditory meatus, and parts of the external surface and surrounding area of the ear. It emerges at the upper end of the the parotid gland.

A network of nerves, usually formed by the ventral rami of spinal nerves, which contribute to sensory and motor innervation of various parts of the body.

A branch of a nerve, often referred to as a division of the nerve itself. The term 'ramus' is used to describe a separate division of a nerve which serves a specific region of the body.

The function of a nerve, whether it is responsible for transmitting sensory information from the body to the brain (sensory) or carrying motor commands from the brain to muscles (motor).

The terminal branches of a nerve are the last portions of the nerve that reach the target muscle or tissue it innervates, responsible for connecting and controlling the specific areas to which they are assigned.