Chapter 14 part 2 SB
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
