Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
What structure navigates into a muscle fiber to allow extracellular fluid to flow into and around myofibrils?
a. sarcomere b. sarcolemma c. sarcoplasmic reticulum d. transverse tubule system |
What structure navigates into a muscle fiber to allow extracellular fluid to flow into and around myofibrils?
d. transverse tubule system |
|
|
Which of the following structures is areolar connective tissue that serves as protection for the axons in a peripheral nerve?
a. fasiculi b. epineurium c. perineurium d. endoneurium |
Which of the following structures is areolar connective tissue that serves as protection for the axons in a peripheral nerve?
b. epineurium |
|
|
Which of the following statements best describes conduction in a myelinated fiber?
a. local b. saltatory c. Eddy currents d. initiated by the T-tubules |
Which of the following statements best describes conduction in a myelinated fiber?
b. saltatory |
|
|
What is the first structure found in the lumbosacral plexus?
a. trunk b. spinal nerve c. ventral rami d. anterior root |
What is the first structure found in the lumbosacral plexus?
c. ventral rami |
|
|
Which of the following is a group of nerve fibers in a peripheral nerve?
a. fasiculi b. epineurium c. perineurium d. endoneurium |
Which of the following is a group of nerve fibers in a peripheral nerve?
a. fasiculi |
|
|
Where does the cell body of the afferent peripheral neuron lie?
a. spinal nerve b. posterior horn c. posterior rami d. dorsal root ganglion |
Where does the cell body of the afferent peripheral neuron lie?
d. dorsal root ganglion |
|
|
Which of the following would be the first to depolarize in natural muscle fiber recruitment?
a. fast twitch, glycolytic b. slow twitch, oxidative c. fast twitch, fatigue resistant d. fast twitch, oxidative, glycolytic |
Which of the following would be the first to depolarize in natural muscle fiber recruitment?
b. slow twitch, oxidative |
|
|
Successful axonal regeneration is dependent upon which of the following structures?
a. perineurium b. sarcolemma c. endoneurium d. neuromuscular junction |
Successful axonal regeneration is dependent upon which of the following structures?
c. endoneurium |
|
|
Which of the following neural structures innervates the lumbosacral paraspinals?
a. spinal nerve b. anterior rami c. sinu vertebral d. posterior rami |
Which of the following neural structures innervates the lumbosacral paraspinals?
d. posterior rami |
|
|
Which of the following symptoms and signs would be consistent with carpal tunnel syndrome?
a. Numbness and tingling of digits 1-3, weakness of the first dorsal interosseous and pain in the wrist b. Numbness and tingling of digits 1-3, weakness of the abductor pollicis brevis and pain in the wrist c. Numbness and tingling of digits 4 and 5, weakness of the abductor digiti minimi and pain in the forearm d. Numbness and tingling of digits 2-4, weakness of the flexor pollicis longus and pain the wrist |
Which of the following symptoms and signs would be consistent with carpal tunnel syndrome?
b. Numbness and tingling of digits 1-3, weakness of the abductor pollicis brevis and pain in the wrist |
|
|
Which of the following signs and symptoms would be consistent with a right S1 radiculopathy?
a. Hypoactive right AJ, weakness of the right ankle dorsiflexors and + right straight leg raise (SLR) at 90 degrees b. Hyperactive right AJ, weakness of the right extensor hallucis longus and two beats of ankle clonus of the right c. Absent right AJ, weakness of the right plantar flexors and + crossed SLR at 40 degrees on the left d. Hypoactive right AJ, weakness of the right hip flexors and + SLR at 90 degrees on the right |
Which of the following signs and symptoms would be consistent with a right S1 radiculopathy?
c. Absent right AJ, weakness of the right plantar flexors and + crossed SLR at 40 degrees on the left |
|
|
Reinnervation through axonal sprouting can occur how soon after Wallerian degeneration?
a. 6 to 8 weeks b. 2 to 3 months c. 1 to 2 years d. It depends on the site of the lesion |
Reinnervation through axonal sprouting can occur how soon after Wallerian degeneration?
a. 6 to 8 weeks |
|
|
The SLR is a tension test for which of the following nerve roots?
a. only S1 b. only L5 c. L5 and S1 d. L4, L5, and S1 |
The SLR is a tension test for which of the following nerve roots?
c. L5 and S1 |
|
|
Which test is more reliable for carpal tunnel syndrome?
a. Tinel's b. Phalen's c. Katz and diagram d. Muscle stretch reflex (MSR)/ deep tendon reflex (DTR) |
Which test is more reliable for carpal tunnel syndrome?
c. Katz and diagram |
|
|
A central herniated nucleus pulposus (HNP) producing pressure against the posterior longitudinal ligament will produce pain in which of the following locations?
a. hip b. posterior thigh c. groin d. low back |
A central herniated nucleus pulposus (HNP) producing pressure against the posterior longitudinal ligament will produce pain in which of the following locations?
d. low back |
|
|
With a axonotmesis (complete loss of axons) of the median nerve at the wrist of one month duration which of the following conditions would you expect?
a. normal median F wave latency b. prolonged median motor distal latency c. no MUPs in the abductor pollicis brevis d. normal amplitude of the median sensory nerve action potential |
With a axonotmesis (complete loss of axons) of the median nerve at the wrist of one month duration which of the following conditions would you expect?
c. no MUPs in the abductor pollicis brevis |
|
|
With demyelination of the median nerve (both motor and sensory fibers) at the wrist, what is the most likely NCV finding with stimulation at the wrist?
a. No median motor distal latency b. Normal median motor distal latency c. Prolonged median sensory nerve latency d. No response from the median sensory nerve fibers |
With demyelination of the median nerve (both motor and sensory fibers) at the wrist, what is the most likely NCV finding with stimulation at the wrist?
c. Prolonged median sensory nerve latency |
|
|
During an EMG the initial positive deflection of the motor unit potential is due to which of the following?
a. quadrapole b. current sink c. leading dipole d. trailing dipole |
During an EMG the initial positive deflection of the motor unit potential is due to which of the following?
c. leading dipole |
|
|
Which of the following conditions can produce conduction along an axon which is slowed in a segment and normal distally?
a. axonotmesis b. severance of the foot c. uniform demyelination d. segmental demyelination |
Which of the following conditions can produce conduction along an axon which is slowed in a segment and normal distally?
d. segmental demyelination |
|
|
Which of the following statements best describes a compound muscle action potential recorded from the abductor pollicis brevis with a surface electrode and the reference electrode over the tendon/bone junction 3cm distally?
a. monophasic, negative b. biphasic, negative-positive c. biphasic, positive-negative d. triphasic, positive-negative-positive |
Which of the following statements best describes a compound muscle action potential recorded from the abductor pollicis brevis with a surface electrode and the reference electrode over the tendon/bone junction 3cm distally?
b. biphasic, negative-positive |
|
|
The nomogram for determining the predicted tibial nerve H reflex latency utilizes which of the following two parameters?
a. leg length and age b. leg length and sex c. distal latency and NCV d. skin temperature and age |
The nomogram for determining the predicted tibial nerve H reflex latency utilizes which of the following two parameters?
a. leg length and age |
|
|
A normal motor unit potential would have how many phases?
a. 3 b. 6 c. 8 d. 10 |
A normal motor unit potential would have how many phases?
a. 3 |
|
|
Which of the following spinal roots are involved if fibrillation potentials are observed in the lumbosacral paraspinals, gluteus maximus, extensor hallucis longus and medial gastrocnemius?
a. L3 b. L4 c. L5 d. S1 |
Which of the following spinal roots are involved if fibrillation potentials are observed in the lumbosacral paraspinals, gluteus maximus, extensor hallucis longus and medial gastrocnemius?
d. S1 |
|
|
If the right sural nerve sensory distal latency is 4.0 ms over a 12 cm distance, the nerve conduction velocity would be what?
a. 3 m/s b. 30 m/s c. 33 m/s d. 330 m/s |
If the right sural nerve sensory distal latency is 4.0 ms over a 12 cm distance, the nerve conduction velocity would be what?
b. 30 m/s |
|
|
Where should the ground electrode be placed during a sensory nerve study?
a. distal to the recording electrode b. proximal to the recording electrode c. between the recording and reference electrodes d. between the recording the stimulating electrodes |
Where should the ground electrode be placed during a sensory nerve study?
d. between the recording the stimulating electrodes |
