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cranial nerves
| Question | Answer |
|---|---|
| What is the 1st cranial nerve? | Olfactory |
| Is the Olfactory nerve sensory or motor? | sensory |
| What is the function of the Olfactory nerve? | responsible for the sense of smell |
| What happens if the olfactory nerve is damaged? | loss of smell |
| What is the 2nd cranial nerve? | Optic |
| Is the optic nerve sensory or motor? | sensory |
| What is the function of the optic nerve? | responsible for vision, carries info from eyes to the brain |
| What happens if the optic nerve is damaged? | blindness |
| What is the 3rd cranial nerve? | Oculomotor |
| Is the oculomotor sensory or motor? | motor |
| What is the function of the oculomotor nerve? | innervates the levator palpebral superioris. |
| What happens if the oculomotor is damaged? | ptosis, mydriasas, eyes turned laterally and down |
| What is the 4th cranial nerve? | Trochlear |
| Is the trochlear nerve sensory or motor? | motor |
| What is the function of the trochlear nerve? | lateral movement of the eye |
| What happens if the trochlear nerve is damaged? | inability to look down when the eye is adducted |
| What is the 5th cranial nerve? | Trigeminal |
| Is the trigeminal nerve sensory or motor? | both |
| What is the sensory function of the trigeminal nerve? | genereal senses (touch, pain, temp) in the face |
| What is the motor function of the trigeminal nerve? | controls muscles of mastication |
| What happens if the trigeminal nerve is damaged? | loss of corneal reflux, painful sensation in the face |
| What is the 6th cranial nerve? | Abducens |
| Is the abducens nerve sensory or motor? | motor |
| What is the function of the abducens nerve? | innervates the lateral rectus muscle that moves the eyeball lateral. |
| If the abducens nerve is damaged what happens? | failure to move the eye laterally |
| What is the 7th cranial nerve? | facial |
| Is the facial nerve sensory or motor? | both |
| What is the motor function of the facial nerve? | facial expressions, tear glands, nasal glands, salivary glands |
| What is the sensory function of the facial nerve? | sense of taste from the anterior 2/3 of tongue |
| What happens if the facial nerve is damaged? | paralysis of facial expressions, loss of taste. |