Match the names of the cranial nerves in column B to the appro...

Question

Match the names of the cranial nerves in column B to the appropriate description in column A.

Column A

_______ (1) Causes pupillary constriction

_______ (2) The major sensory nerve of the face

_______ (3) Serves the sternocleido-mastoid and trapezius muscles

_______ (4) Purely sensory (two nerves)

_______ (5) Serves the tongue muscles

_______ (6) Allows you to chew your food

_______ (7) Impaired in Bell's palsy

_______ (8) Helps regulate heart activity

_______ (9) Helps you hear and maintain your balance

_______ (10) Contain parasympathetic motor fibers (four nerves)

Column B

a. Abducens

b. Accessory

c. Facial

d. Glossopharyngeal

e. Hypoglossal

f. Oculomotor

g. Olfactory

h. Optic

i. Trigeminal

j. Trochlear

k. Vagus

l. Vestibulocochlear

Accepted Answer

Welcome everyone. Let's look at our next problem. It says match the functions in column B associated with the following cranial nerves in column A. So in column A, we have trigeminal nerve, facial nerve, olfactory nerve, vestibular cochlear nerve, glossopharyngeal nerve and optic nerve. And in column B, we have saliva production, maintaining balance, vision, smelling, swallowing, and chewing. Now, one important thing to note is that these are sort of classifications of nerves. So there's more than one of most of these. So facial nerve, there's several facial nerves. So that's an important note here and also that lots of these nerves are mixed, they're both sensory and motor. So when we're looking at these functions, some of these will match up and there are these nerves have different functions. So you might have a nerve that has a sensory function. And another one that has a motor function, say among the facial nerves. So this won't be a list of the complete functions of each nerve, but just one among perhaps multiple functions. So a couple of these are pretty obvious and pretty easy. So on a test, you'd wanna first pick off the easy ones since it's matching. And since we have equal numbers in column A and column B, that's a nice way of seeing, eliminating some and then being able to just focus on the trickier ones. So for instance, olfactory nerve, well, olfactory is related to smell. So that's a pretty easy one to match with choice D or function D smelling. So. All right, D and number three olfactory nerve. So then we can cross off smelling from our list, then we have the vestibular cochlear nerve that hopefully makes you think of cochlear. So we're talking about the ear and we know that the ear has two main functions. Of course, our sense of hearing, but there's no choice of hearing as a function. But what's the other function of the ear? Maintaining balance? And sure enough when we look down here, choice B is maintaining balance. So we'll write that in next to vestibular cochlear nerve and cross off that as a function. And then finally another pretty easy one to pick off right away is number six optic nerve there, optic means related to sight and we have down in our functions. Choice C vision. So we'll put ac next to the optic nerve and cross that off. So our remaining functions are saliva production, swallowing and chewing. When we think about swallowing, we think about the throat and we have number five glossopharyngeal nerve. Of course, that pharyngeal nerve, we think of the pharynx or the throat and indeed the glossopharyngeal nerve, its motor function is swallowing. So we'll put letter E next to Glossop frontal nerve and cross it off. We've got saliva production and chewing left. We've got the trigeminal nerve and the facial nerve left. Now, this one's a bit tricky. Um Both of these are in the same region. Both of these have multiple functions and relate to sensory and motor functions throughout the face. Um But hopefully, we can recall that the trigeminal nerve, we mostly think of it as getting sensory information from the head and face, but it has a motor function of controlling chewing. So trigeminal nerve gets matched with choice f chewing and the facial nerve again, multiple functions but saliva production is one of them. So a saliva production goes with number two facial nerve. So our matchups here we have as trigeminal nerve matches with choice f chewing. Number two, facial nerve matches with a saliva production. Number three, olfactory nerve with D smelling number four vestibular cochlear nerve with B maintaining balance. Number five, Glossop, fingal nerve with e swallowing and number six optic nerve with C vision. See you in the next video.

Key Concepts

Cranial Nerves

Sensory vs. Motor Functions

Parasympathetic Nervous System

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