Chapter 13 Multiple Choice
Which of the following receptors is considered a free dendritic ending? -Ruffini's corpuscles -Meissner's corpuscles -Merkel's discs -Golgi tendon organs
Merkel's discs
Facial. A. Motor and sensory B. Motor only C. Sensory only
Motor and sensory
Glossopharyngeal. A. Motor and sensory B. Motor only C. Sensory only
Motor and sensory
Trigeminal. A. Motor and sensory B. Motor only C. Sensory only
Motor and sensory
Vagus. A. Motor and sensory B. Motor only C. Sensory only
Motor and sensory
Hypoglossal. A. Motor and sensory B. Motor only C. Sensory only
Motor only
Which is the true statement about the synapses in the spinal cord in the stretch reflex?
Multipolar interneurons make inhibitory polysynaptic synapses to the antagonist muscle.
Causes lens shape changes during visual accommodation. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
Oculomotor
The obturator and femoral nerves branch from this plexus. A. Brachial plexus B. Sacral plexus C. Cervical plexus D. Lumbar plexus
Lumbar plexus
Turns the eyeball laterally. A. Olfactory B. Trochlear C. Abducens D. Trigeminal E. Vestibulocochlear F. Vagus G. Accessory
Abducens
Formed by the union of a cranial and a spinal root. A. Olfactory B. Trochlear C. Abducens D. Trigeminal E. Vestibulocochlear F. Vagus G. Accessory
Accessory
Examine and characterize the two motor pathways in the stretch patellar reflex.
Alpha motor neurons send efferent messages to the quadriceps, while parallel efferent messages to the hamstrings are reduced.
Striking the funny bone may cause injury to a nerve of this plexus. A. Brachial plexus B. Sacral plexus C. Cervical plexus D. Lumbar plexus
Brachial plexus
Trauma to a nerve of this plexus may cause wristdrop. A. Brachial plexus B. Sacral plexus C. Cervical plexus D. Lumbar plexus
Brachial plexus
The phrenic nerve branches from this plexus. A. Brachial plexus B. Sacral plexus C. Cervical plexus D. Lumbar plexus
Cervical plexus
Feeling a gentle caress on your arm would likely involve all of the following except ________. -Meissner's corpuscles -tactile discs -Pacinian corpuscles -hair follicle receptors
Pacinian corpuscles
Which sensory receptor only senses the initial stimulus of deep pressure? -Ruffini's corpuscles -Pacinian corpuscles -Golgi tendon organs -neuromuscular spindles
Pacinian corpuscles
Examine the cross section through the lumbar section of the spinal cord and the two patellar reflex pathways shown. What identifies these synapses?
Pathways will activate one muscle and simultaneously inhibit its antagonist muscle. Afferent impulses synapse with motor neurons and interneurons.
Improper administration of an injection to the buttocks may injure a nerve of this plexus. A. Brachial plexus B. Sacral plexus C. Cervical plexus D. Lumbar plexus
Sacral plexus
Olfactory. A. Motor and sensory B. Motor only C. Sensory only
Sensory only
A patient sustains a ventral horn injury to the lumbar region of the spine. This injury has damaged the cell bodies of several afferent nerves within the region. Predict how the patient's patellar reflex might be affected.
The patient's patellar reflex would be absent or weak.
Which of the following is an incorrect statement regarding the occurrence of a sensation? -The stimulus energy must match the specificity of the receptor. -The stimulus energy must occur within the receptor's receptive field. -The stimulus energy must be converted into the energy of a graded potential called a transduction potential. -A generator potential in the associated sensory neuron must reach threshold.
The stimulus energy must be converted into the energy of a graded potential called a transduction potential.
Has major sensory nerves of the face. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
Trigeminal
Controls movement of superior oblique muscle. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
Trochlear
Serves the senses of audition and equilibrium. A. Olfactory B. Trochlear C. Abducens D. Trigeminal E. Vestibulocochlear F. Vagus G. Accessory
Vestibulocochlear
Select the true statements (more than one) about the characteristics of sensory neurons in the stretch reflex?
When a stretch activates the muscle spindle, these sensory neurons transmit impulses at a higher frequency. These sensory neurons transmit afferent impulses toward the spinal cord (CNS).
Checks the integrity of the spinal cord and dorsal rami at the level of T8 to T12. A. Stretch B. Deep tendon C. Flexor D. Crossed extensor E. Abdominal F. Plantar
abdominal
Which of the following is not a component of a reflex arc? -receptor -integration center -motor neuron -affector
affector
Which of the following is (are) mixed nerves? -ventral root -dorsal ramus -dorsal root -all of the above are mixed nerves
dorsal ramus
Pressure, pain, and temperature receptors in the skin are ________. -interoceptors -exteroceptors -proprioceptors -mechanoreceptors
exteroceptors
A patient who received a blow to the side of the skull exhibits the following signs and symptoms on that side of the face: he is unable to close his eye, and the corner of his mouth droops. Which cranial nerve has been damaged? -facial -glossopharyngeal -hypoglossal -accessory
facial
Allows you to smile. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
facial
Produces a rapid withdrawal of the body part from a painful stimulus; ipsilateral. A. Stretch B. Deep tendon C. Flexor D. Crossed extensor E. Abdominal F. Plantar
flexor
Inborn or intrinsic reflexes are ________. -rapid, predictable, and can be learned responses -involuntary, yet may be modified by learned behavior -autonomic only -always mediated by the brain
involuntary, yet may be modified by learned behavior
Which of the following is not a way that sensory receptors are classified? -location in the body -structural complexity -type of stimulus detected -sensitivity to a stimulus
sensitivity to a stimulus
Receptors located in epithelium of the nasal cavity. A. Olfactory B. Trochlear C. Abducens D. Trigeminal E. Vestibulocochlear F. Vagus G. Accessory
olfactory
Forms a cross pattern called a chiasma. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
optic
Tests both upper and lower motor pathways by stimulating the sole of the foot with a dull instrument extension. A. Stretch B. Deep tendon C. Flexor D. Crossed extensor E. Abdominal F. Plantar
plantar
Which of the following reflexes would test the integrity of L4 to S2? -plantar -crossed-extensor -deep tendon -stretch
plantar
What kind of reflexes are Golgi tendon organ body receptors involved in? -withdrawal reflexes -mono synaptic reflexes -reciprocal activation reflexes -superficial reflexes
reciprocal activation reflexes
Transduction refers to conversion of ________. -presynaptic nerve impulses to postsynaptic nerve impulses -stimulus energy into energy of a graded potential -receptor energy to stimulus energy -afferent impulses to efferent impulses
stimulus energy into energy of a graded potential
Prevents muscle overstretching and maintains muscle tone. A. Stretch B. Deep tendon C. Flexor D. Crossed extensor E. Abdominal F. Plantar
stretch
The patellar "knee jerk" reflex is an example of a(n). ________. -extensor thrust reflex -stress reflex -crossed-extensor reflex -stretch reflex
stretch reflex
A reflex that causes muscle relaxation and lengthening in response to muscle tension is called a ________. -tendon reflex -flexor reflex -crossed-extensor reflex -plantar reflex
tendon reflex
In which vertebral region can you find the Rami communicantes? -cervical -thoracic -sacral -lumbar
thoracic
Which of the following is not a nerve plexus? -cervical plexus -lumbar plexus -thoracic plexus -brachial plexus
thoracic plexus
Which of the following cranial nerves is not involved with the eye? -trochlear -oculomotor -trigeminal -abducens
trigeminal
The cranial nerves that have neural connections with the tongue include all except the ________. -trigeminal -facial -glossopharyngeal -trochlear
trochlear
Helps to regulate blood pressure and digestion. A. Olfactory B. Trochlear C. Abducens D. Trigeminal E. Vestibulocochlear F. Vagus G. Accessory
vagus
Which of the following cranial nerves means the wander? -trochlear -trigeminal -glossopharyngeal -vagus
vagus