1 | Page
Chamberlain University-Illinois
BIOS 252
BIOS 252 - EXAM 2 Questions and Answers
2026 Latest Update
Which of the following is not considered a region of the spinal cord?
Sacral
Thoracic
Pelvic
Cervical Ans: Pelvic
The spinal cord is housed in what structure?
The skull
The ribs
The vertebral canal
The pelvic bowl Ans: The vertebral canal
An image of a cross section of the spinal cord would show anterior (or
ventral) horns. What is in that region?
Cell bodies of motor neurons
White matter
Spinal nerves
Ascending tracts Ans: Cell bodies of motor neurons
Which of the following is not associated with the spinal cord?
Coordinate the alternating contraction of several muscle groups associated
with locomotion
© 2026 All rights reserved
, 2 | Page
Conduct motor information down the cord
Conduct sensory information up to the brain
Mediate a reflex, such as the withdrawal of a hand from pain
Integrate sensory information at the conscious level Ans: Integrate sensory
information at the conscious level
Voluntary motor impulses leave the spinal cord via the _________ of grey
matter.
Lateral horn
Posterior horn
Anterior horn
Anterior column
Posterior column Ans: Anterior horn
Spinal nerves are mixed. (True or False?) Ans: True
Which of the following is incorrect?
5 lumbar spinal nerves
8 cervical spinal nerves
11 thoracic spinal nerves
1 coccygeal spinal nerve
5 sacral spinal nerves Ans: 11 thoracic spinal nerves
The dorsal root of spinal nerve contains:
only autonomic fibers
only motor fibers
only sensory fibers
both sensory and motor fibers
© 2026 All rights reserved
, 3 | Page
only somatic fibers Ans: only sensory fibers
Damage to the posterior root of the thoracic spinal nerve would result in
loss of motor function to the intercostal space muscles controlled by that
nerve. (True or False?) Ans: False
The specific patch of skin that is innervated by a specific spinal nerve is
called a(n) ________.
Plexus
Gray horn
Dermatome
Desmosome Ans: Dermatome
While playing rugby, Sonny is tackled hard. As he tries to get up, he finds
that he has difficulty flexing and adducting his left thigh and extending his
left leg. Which nerve innervating the lower limb may be damaged?
Femoral Nerve
Phrenic Nerve
Vagus Nerve
Median Nerve Ans: Femoral Nerve
Which spinal cord plexus supplies the abdominal wall?
More than one of the choices are correct.
cervical plexus
sacral plexus
brachial plexus
lumbar plexus Ans: More than one of the choices are correct (Sacral and
Cervical Plexus)
Which of the groups of spinal nerves listed below do NOT form a plexus?
T2-T11
© 2026 All rights reserved
Chamberlain University-Illinois
BIOS 252
BIOS 252 - EXAM 2 Questions and Answers
2026 Latest Update
Which of the following is not considered a region of the spinal cord?
Sacral
Thoracic
Pelvic
Cervical Ans: Pelvic
The spinal cord is housed in what structure?
The skull
The ribs
The vertebral canal
The pelvic bowl Ans: The vertebral canal
An image of a cross section of the spinal cord would show anterior (or
ventral) horns. What is in that region?
Cell bodies of motor neurons
White matter
Spinal nerves
Ascending tracts Ans: Cell bodies of motor neurons
Which of the following is not associated with the spinal cord?
Coordinate the alternating contraction of several muscle groups associated
with locomotion
© 2026 All rights reserved
, 2 | Page
Conduct motor information down the cord
Conduct sensory information up to the brain
Mediate a reflex, such as the withdrawal of a hand from pain
Integrate sensory information at the conscious level Ans: Integrate sensory
information at the conscious level
Voluntary motor impulses leave the spinal cord via the _________ of grey
matter.
Lateral horn
Posterior horn
Anterior horn
Anterior column
Posterior column Ans: Anterior horn
Spinal nerves are mixed. (True or False?) Ans: True
Which of the following is incorrect?
5 lumbar spinal nerves
8 cervical spinal nerves
11 thoracic spinal nerves
1 coccygeal spinal nerve
5 sacral spinal nerves Ans: 11 thoracic spinal nerves
The dorsal root of spinal nerve contains:
only autonomic fibers
only motor fibers
only sensory fibers
both sensory and motor fibers
© 2026 All rights reserved
, 3 | Page
only somatic fibers Ans: only sensory fibers
Damage to the posterior root of the thoracic spinal nerve would result in
loss of motor function to the intercostal space muscles controlled by that
nerve. (True or False?) Ans: False
The specific patch of skin that is innervated by a specific spinal nerve is
called a(n) ________.
Plexus
Gray horn
Dermatome
Desmosome Ans: Dermatome
While playing rugby, Sonny is tackled hard. As he tries to get up, he finds
that he has difficulty flexing and adducting his left thigh and extending his
left leg. Which nerve innervating the lower limb may be damaged?
Femoral Nerve
Phrenic Nerve
Vagus Nerve
Median Nerve Ans: Femoral Nerve
Which spinal cord plexus supplies the abdominal wall?
More than one of the choices are correct.
cervical plexus
sacral plexus
brachial plexus
lumbar plexus Ans: More than one of the choices are correct (Sacral and
Cervical Plexus)
Which of the groups of spinal nerves listed below do NOT form a plexus?
T2-T11
© 2026 All rights reserved
