PN3 EXAM 3 QUESTIONS AND
ANSWERS
As a cook chops red onions he begins to tear up due to activation of the lacrimal
grand. Which cranial nerve provided the stimulus?
The Facial nerve (VII)
A doctor asks her patient to follow the motion of her finger as she moves it up
and down, left and right. Which of the following cranial nerve is NOT being
tested?
A. The Abducens (VI)
B. The Vestibulocochlear nerve (VIII)
C. The Oculomotor nerve (III)
D. The Trochlear nerve (IV)
B. The Vestibulocochlear nerve (VIII)
A person has gone for an appointment to receive a deep-tissue therapeutic
massage. What receptor would be stimulated by the massage?
Lamellae corpuscle
Tactile sensation is a combination of touch, pressure, stretch, and vibration.
Which receptor type senses tactile stimulation?
Mechanoreceptors
A patient is suffering from inability to distinguish various types of odors. This
patient received damage to which cranial nerve?
Olfactory nerve (I)
An emergency medical technician is examining a trauma victim by shining a pen
in the patients eye. She records the reactivity of the patients pupils as they are
constricted when stimulated by the light. This test supports which of the
following?
A. The patient has function of the oculomotor nerve (III)
B. The patient has lost function of the optic nerve (II)
C. The patient has function of the trochlear nerve (IV)
D. The patient has suffered brain damage.
A. The patient has function of the oculomotor nerve (III)
Nerves that carry impulses towards the CNS only are
Afferent nerves
Mixed cranial nerves containing both sensory and motor fibers include all except
which of the following? A. Facial B.Olfactory C. Trigeminal D. Vagus
B. Olfactory
which of the following statements is most accurate with respect to the
occurrence of a sensation?
, A. A generator potential in the associated sensory neuron must reach threshold
before an action potential occurs.
B. The stimulus energy does not need to match the specificity of the receptors
C. The stimulus energy must be converted into energy of graded potential called
a transduction potential.
D. The stimulus energy must occur outside the receptor's receptive field
A. A generator potential in the associated sensory neuron must reach threshold before
an action potential occurs.
The cranial nerve that emerges from the pons and serves the motor and
prospective function of the eyeball is the ___________.
abducens
What is the correct simple spinal reflex arc?
Receptor, Afferent neuron, Integration center, Efferent neuron, effector
Starting at the spinal cord, the subdivisions of the brachial places are: (in order)
Roots, Trunks, Divisions, Cords, Branches
Inborn or intrinsic reflexes are?
Involuntary, yet may be modified by learned behavior
In a crossed- extensor reflex, if the right arm was grabbed, it would flex and the
left arm would ___________?
Extend
A reflex that causes muscle relaxation and lengthening in response to muscle
tension is called a _____________ ____________.
Tendon reflex
If the ventral root of a spinal nerve were cut, what would be the result in the
tissue or region that nerve supplies ?
A complete loss of voluntary movement
A patient has an injury of the spine and is now suffering from a loss of motor
function in his right arm. However, he still has normal sensory function in the
arm. Based on this information it is likely that the patient has nervous tissue
damage located at__________________?
The ventral root located at one or more of the cervical vertebra
Injury to the cervical vertebrae C3-C4 is particularly problematic because
___________.
The phrenic nerve that serves the diaphragm receives its fibers from here
Striking the "funny bone" is actually stimulation of (or injury to) the
_________________.
Ulnar nerve
The most important role of the gamma motoneuron is to _______________.
Maintain afferent activity during contraction
The secretions of the adrenal medulla act to supplement the effects of
_________________.
Sympathetic stimulation
where would you not find a Cholinergeric nicotinic receptor?
All parasympathetic target organs
Preparing for "Fight-or-flight" response is the role of the ___________.
ANSWERS
As a cook chops red onions he begins to tear up due to activation of the lacrimal
grand. Which cranial nerve provided the stimulus?
The Facial nerve (VII)
A doctor asks her patient to follow the motion of her finger as she moves it up
and down, left and right. Which of the following cranial nerve is NOT being
tested?
A. The Abducens (VI)
B. The Vestibulocochlear nerve (VIII)
C. The Oculomotor nerve (III)
D. The Trochlear nerve (IV)
B. The Vestibulocochlear nerve (VIII)
A person has gone for an appointment to receive a deep-tissue therapeutic
massage. What receptor would be stimulated by the massage?
Lamellae corpuscle
Tactile sensation is a combination of touch, pressure, stretch, and vibration.
Which receptor type senses tactile stimulation?
Mechanoreceptors
A patient is suffering from inability to distinguish various types of odors. This
patient received damage to which cranial nerve?
Olfactory nerve (I)
An emergency medical technician is examining a trauma victim by shining a pen
in the patients eye. She records the reactivity of the patients pupils as they are
constricted when stimulated by the light. This test supports which of the
following?
A. The patient has function of the oculomotor nerve (III)
B. The patient has lost function of the optic nerve (II)
C. The patient has function of the trochlear nerve (IV)
D. The patient has suffered brain damage.
A. The patient has function of the oculomotor nerve (III)
Nerves that carry impulses towards the CNS only are
Afferent nerves
Mixed cranial nerves containing both sensory and motor fibers include all except
which of the following? A. Facial B.Olfactory C. Trigeminal D. Vagus
B. Olfactory
which of the following statements is most accurate with respect to the
occurrence of a sensation?
, A. A generator potential in the associated sensory neuron must reach threshold
before an action potential occurs.
B. The stimulus energy does not need to match the specificity of the receptors
C. The stimulus energy must be converted into energy of graded potential called
a transduction potential.
D. The stimulus energy must occur outside the receptor's receptive field
A. A generator potential in the associated sensory neuron must reach threshold before
an action potential occurs.
The cranial nerve that emerges from the pons and serves the motor and
prospective function of the eyeball is the ___________.
abducens
What is the correct simple spinal reflex arc?
Receptor, Afferent neuron, Integration center, Efferent neuron, effector
Starting at the spinal cord, the subdivisions of the brachial places are: (in order)
Roots, Trunks, Divisions, Cords, Branches
Inborn or intrinsic reflexes are?
Involuntary, yet may be modified by learned behavior
In a crossed- extensor reflex, if the right arm was grabbed, it would flex and the
left arm would ___________?
Extend
A reflex that causes muscle relaxation and lengthening in response to muscle
tension is called a _____________ ____________.
Tendon reflex
If the ventral root of a spinal nerve were cut, what would be the result in the
tissue or region that nerve supplies ?
A complete loss of voluntary movement
A patient has an injury of the spine and is now suffering from a loss of motor
function in his right arm. However, he still has normal sensory function in the
arm. Based on this information it is likely that the patient has nervous tissue
damage located at__________________?
The ventral root located at one or more of the cervical vertebra
Injury to the cervical vertebrae C3-C4 is particularly problematic because
___________.
The phrenic nerve that serves the diaphragm receives its fibers from here
Striking the "funny bone" is actually stimulation of (or injury to) the
_________________.
Ulnar nerve
The most important role of the gamma motoneuron is to _______________.
Maintain afferent activity during contraction
The secretions of the adrenal medulla act to supplement the effects of
_________________.
Sympathetic stimulation
where would you not find a Cholinergeric nicotinic receptor?
All parasympathetic target organs
Preparing for "Fight-or-flight" response is the role of the ___________.
