Anatomy & Physiology II (EXAM # 1) CH. 13 Homework Questions
https://session.masteringaandp.com/problemAsset/1000106512/3/13_2.gif Damage to this nerve would cause difficulty in speech. A B C D E
E
https://session.masteringaandp.com/problemAsset/1000106610/4/13_1.gif Spinal nerve. A B C D E
E
Which of the following is a sensory receptor that is stimulated by light touch? Golgi tendon organs Pacinian corpuscles Ruffini's corpuscles Meissner's corpuscles
Meissner's corpuscles
https://session.masteringaandp.com/problemAsset/1000106609/4/13_1.gif Rootlets of the spinal nerve. A B C D E
B
https://session.masteringaandp.com/problemAsset/1000106591/3/13_2.gif Innervates the superior oblique muscle. A B C D E
A
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
A. Brachial plexus
Trauma to a nerve of this plexus may cause wristdrop. A. Brachial plexus B. Sacral plexus C. Cervical plexus D. Lumbar plexus
A. Brachial plexus
CN IX : Glossopharyngeal. A. Motor and sensory B. Motor only C. Sensory only
A. Motor and sensory
CN V: Trigeminal. A. Motor and sensory B. Motor only C. Sensory only
A. Motor and sensory
CN VII: Facial. A. Motor and sensory B. Motor only C. Sensory only
A. Motor and sensory
CN X: Vagus. A. Motor and sensory B. Motor only C. Sensory only
A. Motor and sensory
Receptors located in epithelium of the nasal cavity. A. Olfactory B. Trochlear C. Abducens D. Trigeminal E. Vestibulocochlear F. Vagus G. Accessory
A. Olfactory
Prevents muscle overstretching and maintains muscle tone. A. Stretch B. Deep tendon C. Flexor D. Crossed extensor E. Abdominal F. Plantar
A. Stretch
Controls movement of superior oblique muscle. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
A. Trochlear
https://session.masteringaandp.com/problemAsset/1000106593/3/13_2.gif Damage to this nerve would keep the eye from rotating laterally. A B C D E
B
Allows you to smile. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
B. Facial
CN XII: Hypoglossal. A. Motor and sensory B. Motor only C. Sensory only
B. Motor only
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
B. Sacral plexus
https://session.masteringaandp.com/problemAsset/1000106510/3/13_2.gif Longest cranial nerve. A B C D E
C
https://session.masteringaandp.com/problemAsset/1000106631/3/13_1.gif Dorsal root. A B C D E
C
https://session.masteringaandp.com/problemAsset/1000106679/4/13_2.gif Involved in the regulation of breathing. A B C D E
C
Turns the eyeball laterally. A. Olfactory B. Trochlear C. Abducens D. Trigeminal E. Vestibulocochlear F. Vagus G. Accessory
C. Abducens
The phrenic nerve branches from this plexus. A. Brachial plexus B. Sacral plexus C. Cervical plexus D. Lumbar plexus
C. Cervical plexus
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
C. Flexor
CN I: Olfactory. A. Motor and sensory B. Motor only C. Sensory only
C. Sensory only
https://session.masteringaandp.com/problemAsset/1000106511/3/13_2.gif Damage to this nerve would cause dizziness, nausea, and loss of balance. A B C D E
D
https://session.masteringaandp.com/problemAsset/1000106610/4/13_1.gif Dorsal root ganglion. A B C D E
D
The obturator and femoral nerves branch from this plexus. A. Brachial plexus B. Sacral plexus C. Cervical plexus D. Lumbar plexus
D. Lumbar plexus
Forms a cross pattern called a chiasma. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
D. Optic
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
E. Abdominal
Causes lens shape changes during visual accommodation. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
E. Oculomotor
Serves the senses of audition and equilibrium. A. Olfactory B. Trochlear C. Abducens D. Trigeminal E. Vestibulocochlear F. Vagus G. Accessory
E. Vestibulocochlear
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
F. Plantar
Has major sensory nerves of the face. A. Trochlear B. Facial C. Hypoglossal D. Optic E. Oculomotor F. Trigeminal
F. Trigeminal
Helps to regulate blood pressure and digestion. A. Olfactory B. Trochlear C. Abducens D. Trigeminal E. Vestibulocochlear F. Vagus G. Accessory
F. Vagus
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
G. Accessory
After axonal injury, regeneration in peripheral nerves is guided by ________. Wallerian cells Schwann cells dendrites Golgi organs
Schwann cells
https://session.masteringaandp.com/problemAsset/1000370126/2/Stretch_PartE.jpg Examine and characterize the two motor pathways in the stretch patellar reflex. a. Alpha motor neurons send efferent messages to the quadriceps, while parallel efferent messages to the hamstrings are reduced. b. Interneurons excite alpha motor neurons, which in turn excite the muscle. c. Alpha motor neurons activate the quadriceps. Once the quadriceps have contracted, alpha motor neurons inhibit the hamstrings. d. Alpha motor neurons send efferent messages to excite the quadriceps, and the hamstrings are reduced.
a. Alpha motor neurons send efferent messages to the quadriceps, while parallel efferent messages to the hamstrings are reduced.
Examine the cross section through the lumbar section of the spinal cord and the two patellar reflex pathways shown. What identifies these synapses? a. Both pathways will inhibit muscles. b. Pathways will activate one muscle and simultaneously inhibit its antagonist muscle. c. Efferent impulses synapse twice with motor neurons. d. Both pathways will activate muscles. e. Afferent impulses synapse twice with motor neurons. f. Afferent impulses synapse with motor neurons and interneurons. g. Efferent impulses synapse with motor neurons and interneurons.
b. Pathways will activate one muscle and simultaneously inhibit its antagonist muscle. f. Afferent impulses synapse with motor neurons and interneurons.
https://session.masteringaandp.com/problemAsset/1000370126/2/Stretch_PartB.jpg Select the true statements (more than one) about the characteristics of sensory neurons in the stretch reflex. a. These sensory neurons typically transmit efferent impulses toward antagonist muscles. b. When a stretch activates the muscle spindle, these sensory neurons transmit impulses at a higher frequency. c. These sensory neurons transmit afferent impulses toward the spinal cord (CNS). d. These sensory neurons transmit efferent impulses to antagonist muscles. e. These sensory neurons transmit impulses to the spinal cord via interneurons.
b. When a stretch activates the muscle spindle, these sensory neurons transmit impulses at a higher frequency. c. These sensory neurons transmit afferent impulses toward the spinal cord (CNS).
Which of the following cranial nerves has its neuron cell body located in a site other than the cranial sensory ganglia? cranial nerve VI cranial nerve II cranial nerve IV cranial nerve VII
cranial nerve II
https://session.masteringaandp.com/problemAsset/1000370126/2/Stretch_PartC.png Which is the true statement about the synapses in the spinal cord in the stretch reflex? a. Polysynaptic interneurons first synapse with higher brain centers. b The antagonist muscle is activated by increased frequency stimuli. c Sensory neurons synapse with motor neuron interneurons to excite the extrafusal fibers of the stretched muscle. d Interneurons make inhibitory synapses with neurons that prevent contraction of the antagonist muscle.
d. Interneurons make inhibitory synapses with neurons that prevent contraction of the antagonist muscle.
The back is innervated by the dorsal root of spinal nerves dorsal rami of spinal nerves ventral rami of spinal nerves ventral root of spinal nerves
dorsal rami of spinal nerves
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. a. Both the quadriceps and the hamstring would contract. b. The quadriceps would contract, but the hamstring would not relax. c. The hamstring would relax, but the quadriceps would not contract. d. The patient's patellar reflex would be hyperactive. e. The patient's patellar reflex would be absent or weak.
e. The patient's patellar reflex would be absent or weak.
In a crossed-extensor reflex, if the right arm was grabbed it would flex and the left arm would ________. also flex extend abduct adduct
extend
Which of the following reflexes produces a rapid withdrawal of the body part from a painful stimulus (ipsilateral)? crossed-extensor plantar Golgi tendon flexor
flexor
Which nerve is compressed in carpal tunnel syndrome? median axillary radial ulnar
median
A fracture of the ethmoid bone could result in damage to which cranial nerve? glossopharyngeal vagus olfactory accessory
olfactory
Which of the following cranial nerves is purely sensory? trigeminal accessory vagus optic
optic
What level includes cortical and brain stem motor areas? precommand level segmental level projection level none of the above
projection level
Which of the following branches of a spinal nerve contain autonomic motor nerve fibers and is only found in the thoracic region? dorsal root dorsal ramus rami communicantes ventral root
rami communicantes
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
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
All processing at the circuit level going up to the perceptual level must synapse in the ________. pons thalamus reticular formation medulla
thalamus
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
