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