Skull Osteology, and Cranial Nerve Study Guide

MGH IHP Clinical Anatomy Module II/III

What is the name of the CN I?

Olfactory

What is the name of the CN II?

Optic

What is the name of the CN III?

Oculomotor

What is the name of the CN IV?

Trochlear

What is the name of the CN V?

Trigeminal

What is the name of the CN VI?

Abducens

What is the name of the CN VII?

Facial

What is the name of the CN VIII?

Vestibulocochlear

What is the name of the CN IX?

Glossopharyngeal

What is the name of the CN X?

Vagus

What is the name of the CN XI?

Accessory

What is the name of the CN XII?

Hypoglossal

How many cranial nerves are there?

12

What number is roman numeral I?

1

What number is roman numeral II?

2

What number is roman numeral III?

3

What number is roman numeral IV?

4

What number is roman numeral V?

5

What number is roman numeral VI?

6

What number is roman numeral VII?

7

What number is roman numeral VIII?

8

What number is roman numeral IX?

9

What number is roman numeral X?

10

What number is roman numeral XI?

11

What number is roman numeral XII?

12

How to determine a roman numeral (Example):

I is 1, and II is 2. If you see a roman numeral to the left of another numeral that is higher than it, subtract the lower from the higher. For instance, IV is 4 because 5 (V) minus 1 (I) equals 4. Similarly, if you see a roman numeral next to another with the one on the left being higher you add the two together. For instance, VI is 6 because 5 (V) plus 1 (I) equals 6.

Is cranial nerve I Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve I, also known as the olfactory nerve, is classified as a sensory nerve responsible for the sense of smell.

Is cranial nerve II Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve II, also known as the optic nerve, is classified as a sensory nerve responsible for vision.

Is cranial nerve III Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve III, known as the oculomotor nerve, is classified as a motor nerve that controls most of the eye's movements, as well as the constriction of the pupil and maintains an open eyelid.

Is cranial nerve IV Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve IV, also known as the trochlear nerve, is classified as a motor nerve that innervates the superior oblique muscle, enabling eye movement.

Is cranial nerve V Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve V, known as the trigeminal nerve, is classified as a mixed nerve, responsible for sensation in the face and controlling the muscles for chewing.

Is cranial nerve VI Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve VI, known as the abducens nerve, is classified as a motor nerve that controls the lateral rectus muscle, enabling outward eye movement.

Is cranial nerve VII Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve VII, known as the facial nerve, is classified as a mixed nerve. It is responsible for facial expression, taste sensations from the anterior two-thirds of the tongue, and the secretion of saliva and tears.

Is cranial nerve VIII Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve VIII, known as the vestibulocochlear nerve, is classified as a sensory nerve. It is responsible for hearing and balance by transmitting sound information from the cochlea and spatial orientation from the vestibular system.

Is cranial nerve IX Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve IX, known as the glossopharyngeal nerve, is classified as a mixed nerve. It plays a role in taste sensations from the posterior one-third of the tongue, assists in swallowing, and contributes to the secretion of saliva.

Is cranial nerve X Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve X, known as the vagus nerve, is classified as a mixed nerve. It is involved in the regulation of heart rate, gastrointestinal peristalsis, and sensory functions from the thoracic and abdominal organs.

Is cranial nerve XI Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve XI, known as the accessory nerve, is classified as a motor nerve. It controls the sternocleidomastoid and trapezius muscles, facilitating movements such as head rotation and shoulder elevation.

Is cranial nerve XII Sensory, Motor, or Mixed? What does the nerve do?

Cranial nerve XII, known as the hypoglossal nerve, is classified as a motor nerve. It is primarily responsible for controlling the movements of the tongue, which is essential for speech and swallowing.

What cranial nerve(s) are represented by the purple pipe cleaner?

CN III (Oculomotor Nerve), CN IV (Trochlear Nerve), CN V (Ophthalmic Nerve / Trigeminal Nerve), CN VI (Abducens Nerve)

What cranial nerve(s) are represented by the purple pipe cleaner?

Cranial Nerve II (Optic Nerve)

What cranial nerve(s) are represented by the purple pipe cleaner?

CN I (Olfactory nerve)

What cranial nerve(s) are represented by the purple pipe cleaner?

Cranial Nerve V (Opthalmic/Maxillary Nerve)

What cranial nerve(s) are represented by the purple pipe cleaner?

Cranial Nerve IX (Glossopharyngeal Nerve), Cranial Nerve X (Vagus Nerve), Cranial Nerve XI (Accessory Nerve)

What cranial nerve(s) are represented by the purple pipe cleaner?

Cranial Nerve XII (Hypoglossal Nerve)

What cranial nerve(s) are represented by the purple pipe cleaner?

Cranial Nerve VII (Facial Nerve), Cranial Nerve VIII (Vestibulocochlear Nerve)

What cranial nerve(s) are represented by the purple pipe cleaner?

Cranial Nerve V (Opthalmic/Mandibular Nerve)

What cranial nerve(s) are represented by the purple pipe cleaner?

CN III (Oculomotor Nerve), CN IV (Trochlear Nerve), CN V (Ophthalmic Nerve / Trigeminal Nerve), CN VI (Abducens Nerve)

What cranial nerve(s) are represented by the purple pipe cleaner?

Cranial Nerve II (Optic Nerve)

What is A?

Frontal Bone

What is B?

Left Parietal Bone

What is C?

Right Parietal Bone

What is D?

External Occipital Protuberance

What is E?

Occipital Bone

What is F?

Occipital Condyles

What is G?

Foramen Magnum

What is H?

Right Temporal Bone

What is i?

Left Temporal Bone

What is J?

Coronal Suture

What is K?

Sagittal Suture

What is L?

Lambdoid Suture

What is M?

Bregma

What is N?

Lamda

What is O?

Pterion

What is P?

Superior Orbital Fissure

What is Q?

Optic Canal

What is R?

Inferior Orbital Fissure

What is S?

Mandibular Fossa

What is T?

Mastoid Process

What is U?

Squamos Suture

What is V?

Styloid Process

What is W?

Stylomastoid Foramen

What is X?

External Acoustic Meatus

What is Y?

Zygomatic Bone

What is Z?

Sphenoid Bone

What is 1?

Pterygoid Process of Sphenoid

What is 2?

Maxilla Bone

What is 3?

Mandible Bone

What is 4?

Mandibular Condyle Bone

What is 5?

Coronoid Process of Mandible

What is 6?

Ramus of Mandible

What is 7?

Body of Mandible

What is 8?

Cribiform Plate

What is 9?

Optic Canal

What is 10?

Superior Orbital Fissure

What is 11?

Foramen Rotundum

What is 12?

Foramen Ovale

What is 13?

Internal Acoustic Meatus

What is 14?

Jugular Foramen

What is 15?

Hypoglossal Canal