Cranial nerves

Question 1

Cranial nerve IV and its function?

Answer 1

Trochlear Nerve.

Question 2

Cranial nerve V its composition, function, and diagnostic symptoms?

Answer 2

Trigeminal Nerve:
Both Sensory and Motor
Main Sensory Nerve of face. For Touch, pain and temperature. Motor Component controls masseter muscle
Damage produces loss of sensation to face and impaired chewing causing headaches.

Question 3

Cranial nerve VI, its composition, function, and diagnostic symptoms?

Answer 3

Abducens Nerve.
Motor
Controls Lateral Rectus Muscle
Symptoms: Not tracking movement, double vision

Question 4

Cranial nerve VII and its function?

Answer 4

Facial Nerve

Both Motor and Sensory

Question 5

Name the cranial nerves in order.

Answer 5

On, On On they traveled And Found Voldemort Guarding Very Awful Horcruxes.

I) Olfactory
II) Optic
II) Opticalmotor
IV)
V)
VI) Abducens
VII) Facial Nerve
VIII) Vestibulocochlear 
IX) Glossopharygeal 
X) Vagus
XI) Accessory Nerve
XII) Hypoglossal Nerve

Question 6

Where does the facial nerve originate are its five branches?

What number nerve is it?

Answer 6

Originates in the pons. 
Temporal
Zygomatic
Buccal
Mandibular
Cervical
Cranial Nerve 7

Question 7

Cranial nerve XII and its function?

Answer 7

Hypoglossal Nerve (below the tongue). Mixed nerve. Primary function moving your tongue around.

Question 8

Cranial nerve XI and its function?

Answer 8

Accessory nerve. Its a motor nerve.

Question 9

Describe functions the cranial portion of the accessory nerve

Answer 9

effects throat and soft palate. Checked by saying “ah” to see if throat opens evenly. Some role in swallowing

Question 10

Describe functions the spinal portion of the accessory nerve

Answer 10

control sternocleidomastoid and trapezius. Damage results in head turned toward injured side

Question 11

Cranial nerve X and its function? How can you diagnose problems with it?

Answer 11

Vagus Nerve. Involved in everything related to parasympathetic nervous system. Involves more invasive diagnostic tests, sometimes indicated by laryngitis without sore throat.

Question 12

What is the only cranial nerve that you need at least one functioning one to survive.

Answer 12

Vagus Nerve

Question 13

Cranial nerve IX and its function?

Answer 13

Glossopharyngeal Nerve. It is a mixed nerve.

Question 14

What does the sensory component of the glossopharyngeal nerve do?

Answer 14

Sensory side is posterior 1/3 of tongue. Involved in bitter receptors and posterior sour receptors. Involved in regulating blood pressure to the brain through carotid sinuses

Question 15

What does the motor component of the glossopharyngeal nerve do?

Answer 15

Important in swallowing food. Initiates swallowing reflex. Controls secretions from carotid salivary glands.

Question 16

Cranial nerve VIII and its function?

Answer 16

vestibulocochlear nerve

Question 17

Which branch of the vestibulocochlear nerve arises from the medula, and what are symptoms of damage?

Answer 17

The cochlear branch Damage to hearing.

Question 18

Which part of the vestibulocochlear nerve arises from the Pons? What are symptoms of damage?

Answer 18

The vestibular branch. Involved in balance. Can have nausea, vertigo, and Nystagmus (constantly moving eyes from trying to regain balance).

Question 19

What is complete damage to the facial nerve called?

Answer 19

Bell’s Palsey

Question 20

What are common signs and test for damage??

Answer 20

Asking someone to smile. Test tear ducts, and asking about damage to sweet and salty taste. The Sensory portion control front 2/3 of the tongue.

Question 21

How can swallowing be effected by damage to the fascial nerve?

Answer 21

Controls musscus aspect of submandibular and sublingual salivary glands. The causes watery saliva that make it harder to swallow food.