1. I. Olfactory nerve
1.1. Apparent origin
1.1.1. Telencephalon: It's an extension of the brain, therefore, it isn't specifically associated with the brain stem.
1.2. Hole
1.2.1. Hole in the cribiform plate,
1.3. Function
1.3.1. Transmits impulses from taste buds and olfactory mucosa.
2. II. Optical nerve
2.1. Apparent origin
2.1.1. Diencephalon: same as the olfactory nerve, it's an extension of the brain.
2.2. Hole
2.2.1. Optical channel
2.3. Function
2.3.1. Transmits impulses from the viscera and blood vessels.
3. III. Oculomotor nerver
3.1. Apparent origin
3.1.1. Midbrain.
3.2. Hole
3.2.1. Upper orbital fissure.
3.3. Function
3.3.1. Innervates the smooth muscle of the viscera, extraocular muscles, heart, salivary glands and skeletons muscles.
4. IV. Trochlear nerve
4.1. Apparent origin
4.1.1. Midbrain.
4.2. Hole
4.2.1. Upper orbital fissure.
4.3. Function
4.3.1. Innervates the skeletons muscles.
5. V. Trigeminal nerve
5.1. Apparent origin
5.1.1. Brainstem.
5.2. Hole
5.2.1. Oval hole
5.3. Function
5.3.1. Innervates the skeletons muscles branchial arc derivatives and transmits impulses from the skin and the skeletons muscles.
6. VI. External eye motor nerve or abducens nerve
6.1. Apparent origin
6.1.1. Brainstem.
6.2. Hole
6.2.1. Upper orbital fissure.
6.3. Function
6.3.1. Innervates the skeletons muscles.
7. VII. Facial nerve
7.1. Apparent origin
7.1.1. Brainstem.
7.2. Hole
7.2.1. Internal acoustic meatus.
7.3. Function
7.3.1. Innervates the skeletons branchial arc derivates, the smooth muscle of the viscera, extraocular muscles, heart, salivary glands and transmits impulses from taste buds and olfactory mucosa, and from the skin and skeletons muscles.
8. VIII. Vestibulocochlear nerve or auditory nerve
8.1. Apparent origin
8.1.1. Spinal bulb
8.2. Hole
8.3. Internal acoustic meatus.
8.4. Function
8.4.1. Transmits impulses from the retina and vestibular and auditory devices.
9. IX. Glossopharyngeal nerve
9.1. Apparent origin
9.1.1. Spinal bulb
9.2. Hole
9.2.1. jugular hole
9.3. Function
9.3.1. Innervates the skeletons branchial arc derivates, the smooth muscle of the viscera, extraocular muscles, heart, salivary glands and transmits impulses from taste buds and olfactory mucosa, from the skin and skeletons muscles, and from the viscera and blood vassels.
10. X. Vague nerve
10.1. Apparent origin
10.1.1. Spinal bulb
10.2. Hole
10.2.1. Jugular hole
10.3. Function
10.3.1. Innervates the skeletons branchial arc derivates, the smooth muscle of the viscera, extraocular muscles, heart, salivary glands and transmits impulses from taste buds and olfactory mucosa, from the skin and skeletons muscles, and from the viscera and blood vassels.
11. XI. Accessory nerve or spinal nerve
11.1. Apparent origin
11.1.1. Spinal bulb
11.2. Hole
11.2.1. Jugular hole
11.3. Function
11.3.1. Innervates the skeletons branchial arc derivates and the skeletons muscles.
12. XII. Hipoglossal nerve
12.1. Apparent origin
12.1.1. Spinal bulb
12.2. Hole
12.2.1. Hypoglossal canal
12.3. Function
12.3.1. Innervates the skeletons muscles.