BIOS-252 2026 COMPREHENSIVE EXAM SCRIPT FULL QUESTIONS AND CORRECT ANSWERS

BIOS-252 2026 COMPREHENSIVE EXAM
SCRIPT FULL QUESTIONS AND CORRECT
ANSWERS



◉Dermatomes are regions of the skin supplied by a single spinal
nerve.


True
False. Answer: True


◉The withdrawal reflex is an example of a(n) ____________ reflex.


polysynaptic
inhibitory
monosynaptic
contralateral
ipsilateral. Answer: polysynaptic


◉Spinal nerves are mixed nerves containing both sensory and
motor fibers.

,True
False. Answer: True


◉The dorsal root ganglion contains what?


Dendrites of motor neurons
Interneuron cell bodies
Sensory neuron cell bodies
Axons of sensory neurons
Motor neuron cell bodies. Answer: Sensory neuron cell bodies


◉Identify the structures. Answer: Anterior grey horn
Posterior grey horn


◉How many spinal cord enlargements correspond to regions where
nerves that innervate the limbs emerge?


Two
Three
One
Four

, Five. Answer: Two


◉A bundle of spinal nerves and nerve roots that extend from the
end of the spinal cord, typically at the level of the first or second
lumbar vertebra, down to the coccyx is known as what?


Cauda equina
Dorsal root
Conus medullaris
Filum terminale. Answer: Cauda equina


◉Match the neurotransmitter with its associated postganglionic
fibers related to the division of the autonomic nervous system.


Acetylcholine
Norepinephrine


Sympathetic nervous system
Parasympathetic nervous system. Answer: Acetylcholine -
Parasympathetic nervous system
Norepinephrine - Sympathetic nervous system