The following image depicts the _______, which is responsible for _____ . spinal cord, peripheral nervous system communication

BSC2087 Human Anatomy and Physiology I

Module 6 Lab Assessment

Question 1The following image depicts the _______, which is responsible for _____ .

spinal cord, peripheral nervous system communication

ventral roots, motor commands to skeletal muscle

spinal nerves, spinal reflexes

dorsal roots, sensory input

Question 2Testing the patellar reflex in a patient is a good indicator of overall brain function.

True

False

Question 3The following image sequence represents the proper order of neurologic impulse in the reflex arc.

True

False

Question 4Which of the following letters represents the myelin sheath?

A

D

B

C

Question 5Where are the neuroglia in the image located?

PNS

ANS only

CNS and PNS

CNS

Question 6The Jendrassik maneuver decreases the patellar reflex output by inhibiting descending tract input to the spinal reflex arc.

False

True

Question 7The structures shows on this histological image may be found in which of the following branches of the nervous system?

Neither CNS nor PNS

PNS

Both CNS and PNS

CNS

Question 8What is the correct order of the phases of an action potential?

Rising, Peaking, Falling, Undershoot, Refractory

Rising, Peaking, Undershoot, Refractory, Falling

Peaking, Undershoot, Refractory, Falling, Rising

Peaking, Falling, Undershoot, Rising, Refractory

Question 9Which of the following steps occurs immediately after dendrites receive a message?

Muscle cells relax.

If the signal is strong enough, the axon sends a chain of depolarization down the axon.

Axons receive a message.

The axon terminal becomes repolarized.

Question 10When positively charged ions enter the axon, this creates a repolarizing signal.

True

False

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