Chapter 14 part 2 SB

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Which cranial nerve plays a major role in the control of cardiac,pulmonary, digestive and uninary functions?

Vagus

Which nerve transmits sensory signals for hearing and equilibrium?

Vestibulocochlear (VIII)

Which cranial nerve is indicated on this diagram?

accessory

Which nerve sends motor signals for swallowing, and moving the head, neck, and shoulders?

accessory

Most motor fibers of cranial nerves begin in which of the following?

brainstem nuclei

Which arise from the base of the brain, exit the cranium through its foramina, and lead to muscles and sense organs in the head and neck?

cranial nerves

Where does optic nerve carry visual information?

from eye to brain

Where does the vestibulocochlear nerve pass through the cranium?

internal acoustic meatus

Where does the accessory (XI) nerve pass through the cranium?

jugular foramen

Where does the vagus (X) nerve pass through the cranium?

jugular foramen

Where do the vestibulocochlear nerve fibers for hearing terminate?

medulla

Where does cranial nerve IV (the trochlear nerve) originate?

midbrain

Where does the cranial nerve III (the oculomotor nerve) originate?

midbrain

How is the trigeminal nerve classified according to function

mixe

How is the facial nerve (cranial nerve VII) classified?

mixed

How is the glossopharyngeal (IX) nerve functionally classified?

mixed

What type of nerve is the vagus nerve?

mixed

How is the abducens nerve (cranial nerve VI) classified?

motor

How is the hypoglossal (XII) nerve classified according to function?

motor

How is the trochlear nerve (cranial nerve IV) classified according to function?

motor

Where does the olfactory (I) nerve originate?

mucosa of nasal cavity

Where does the olfactory (I) nerve terminate?

olfactory bulb

Where does the abducens nerve (cranial nerve VI) originate?

pons

How is the vestibulocochlear nerve (cranial nerve VIII) functionally classified?

predominantly sensory

Where does cranial nerve II originate?

retina

How is the optic nerve (cranial nerve II) classified?

sensory

Where does cranial nerve VI (the abducens nerve) pass through the cranium?

superior orbital fissure

What does the motor portion of the glossopharyngeal nerve (cranial nerve IX) innervate?

-Stylopharyngeal muscles -Glands of the posterior tongue -Parotid gland

Which nerve controls tongue movements?

Hypoglossal

Where does the motor portion of the vagus(X) nerve originate?

Medulla oblongata

The ______ nerves (cranial nerve I) pass through the cribriform plate in the roof of the nasal cavity functioning in the sense of smell

Olfactory

Which nerve controls eye movement?

Trochlear (IV)

Where does the trochlear nerve (cranial nerve IV) pass through the cranium?

superior orbital fissure

How many divisions does the trigeminal nerve have?

three

How many pairs of cranial nerves are there?

12

How many branches does the facial nerve have?

5, temporal, zygomatic, buccal, mandibular, cervical

Which nerve innervates the muscles that move the eyeball laterally

Abducens (VI)

Where does the accessory nerve originate?

C1 to C5 segments of spinal cord

Which cranial nerves are purely sensory?

CN I and II

Where does cranial nerve III (the oculomotor nerve) terminate?

External eye muscles Constrictor of the iris Ciliary muscle of the lens

True or false: A lesion in the right side of the brainstem will usually cause a sensory or motor deficit on the left side of the head.

False

True or false: A lesion in the right side of the brainstem will usually cause a sensory or motor deficit on the left side of the head

False - most cranial nerves run between brainstem nuclei and ipsilateral receptors and effectors. A brainstem lesion will therefore cause a deficit on the same side of the head.

The sensory portion of the ______ nerve (cranial nerve IX) innervates the pharynx, middle and outer ear, and the posterior one-third of the tongue

Glossopharyngeal

Which nerve transmits both sensory and motor impulses to the head, neck and thoracic region?

Glossopharyngeal (IX)

Which cranial nerve is identified by the arrow?

Hypoglossal

Match the name of each cranial nerve to its designated number.

I olfactory II optic III oculi motor IV trochlea V Trigeminal VI Abducens

Which cranial nerves are classified as predominantly Motor?

III, IV, VI, XI, XII


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