EXAM 3

Question 1

Which cranial nerve is responsible for the sensory innervation of the anterior two-thirds of the tongue?

Cranial nerve III
Cranial nerve V
Cranial nerve VII
Cranial nerve IX

Answer 1

Cranial Nerve VII - facial

Question 2

The primary function of the Limbic System is

promoting and expressing “emotions”.
allowing for the ability to speak and write words.
regulating our sleep cycle.
the ability to feel crude touch and pressure

Answer 2

promoting and expressing “emotions”

Question 3

the diencephalon includes

Answer 3

thalamus
hypothalamus
epithalamus

Question 4

Lateral spinothalamic tracts

Process crude touch and pressure
Process head and neck movements with visual reflexes
Process voluntary movements on the opposite side of the body
Process crude touch, pain & temperature

Answer 4

process crude touch, pain, and temperature

Question 5

During this period, a second action potential can only be initiated by a larger than normal stimulus

Latent period
Relative refractory period
All of these choices
Absolute refractory period

Answer 5

relative refractory period

Question 6

All of the following cranial nerves have a functional classification of motor except:

Trigeminal.
olfactory
oculomotor.
trochlear.

Answer 6

olfactory

Question 7

What is considered the end of the spinal cord

Cauda Equina
Conus Medullaris
Filum terminale
coccyx

Answer 7

conus medullaris

Question 8

Which of the following brain structures consists of the medulla oblongata, pons and midbrain?

Brain stem
Cerebrum
Cerebellum
Diencephalon

Answer 8

brainstem

Question 9

In the brain, cardiac and respiratory centers are located primarily in the

cortex
midbrain
cerebellum
medulla

Answer 9

medulla

Question 10

Which part of the brain is primarily responsible for integrating sensory information, coordinating voluntary movements, and maintaining balance and posture?

Cerebrum
Cerebellum
Brainstem
Thalamus

Answer 10

cerebellum

Question 11

Which peripheral nerve is responsible for innervating the muscles that extend the wrist and fingers, as well as providing sensory innervation to the back of the hand and posterior lateral aspect of the forearm?

Radial
Median
Ulnar
Axillary

Answer 11

radial

Question 12

Which peripheral nerve is responsible for motor innervation of the muscles that plantarflex the ankle and flex the toes, as well as sensory innervation to the sole of the foot, except for the skin over the medial part?

Deep fibular nerve
Tibial nerve
Femoral nerve
Median nerve

Answer 12

tibial nerve

Question 13

Which structure of the spinal cord primarily contains sensory neurons that carry information from the peripheral nervous system to the central nervous system?

Dorsal root
Ventral root
Gray commissure
Cranial nerve III

Answer 13

dorsal root

Question 14

In order for an action potential to occur:

there is an increase in charge inside a neuron from -70mV towards threshold.
must reach -55mV in order to generate an action potential.
Voltage gated channels open allowing Sodium ions to exit
It must reach +30mV in order to initiate an action Potential

Answer 14

must reach -55mV in order to generate an action potential

Question 15

Which of the following meninges is considered the deepest

Arachnoid matter
Subarachnoid matter
Pia matter
Dura Matter

Answer 15

pia matter

Question 16

The Oculomotor nerve (CN III)

controls facial expressions
regulates pupil size
controls sense of balance or equilibrium
controls hearing

Answer 16

regulates pupil size

Question 17

In the nervous system, afferent pathways:

go from the brain to an effector
are also called sensory pathways
are also called motor pathways
only exist in the PNS

Answer 17

are also called sensory pathways

Question 18

The trigeminal nerve (CNV)

is neither a sensory , motor or mixed nerve
controls sensations of the head and face, as well as chewing movements
is strictly a motor nerve.
is strictly a sensory nerve

Answer 18

controls sensations of the head and face, as well as chewing movements

Question 19

The spinal tract that, originates in the brain, and terminates in

the spinal cord is the _____ tract.

lateral spinothalamic
Anterior spinothalmic
ventral spinothalamic
lateral corticospinal

Answer 19

lateral corticospinal

Question 20

Which part of the brain is primarily involved in the processing and integration of sensory information, as well as regulating consciousness and sleep-wake cycles?

Cerebrum
Thalamus
Medulla Oblongata
Hippocampus

Answer 20

thalamus

Question 21

The PT reports that your new patient has a cranial nerve lesion causing the patient to be unable to see out of their right eye. This is causing balance issues in the patient’s daily living. Which CN is affected?

Optic
Oculomotor
Abducens
Trochlear

Answer 21

optic

Question 22

Commissural tracts

go from one hemisphere of the brain to the other
go from one spot to another within one hemisphere
go from the brain to the effectors and back
All of these

Answer 22

go from one hemisphere of the brain to the other

Question 23

Which cranial nerve is responsible for motor innervation of the muscles involved in chewing (mastication) and sensory innervation to the anterior two-thirds of the tongue, as well as the mucous membranes of the mouth and nose?

Cranial nerve III
Cranial nerve V
Cranial nerve VII
Cranial nerve IX

Answer 23

cranial nerve V

Question 24

Which statement accurately describes the phrenic nerve?

It arises from the cervical plexus and provides motor innervation to the diaphragm.
It originates from the brachial plexus and innervates the muscles of the upper arm
It is a branch of the femoral nerve responsible for sensory innervation of the thigh.
It emerges from the lumbar plexus and supplies motor control to the abdominal muscles

Answer 24

it arises from the cervical plexus and provides motor intervention to the diaphragm