BIOS 252 Exam 2 Chamberlain University College of
Nursing 2026 | Latest Update | Exam Prep Questions &
Answers | Graded A+
1. A section of skin which is innervated by a specific spinal nerve defines a
neural plexus
spinal reflex
dermatome
dural sinus
spinal fascicle
2. Which of the following is not true of somatic reflexes?
They are a motor response to a stimulus
They are unlearned
They require input from the cerebral cortex to occur
They are involuntary
They are rapid
3. What type of neurons are responsible for carrying information from the
thalamus to the cerebral cortex in the ascending tracts?
Third-order neurons
Second-order neurons
First-order neurons
Fourth-order neurons
,4. In which part of the spinal cord are the cell bodies of lower motor neurons
primarily found?
Dorsal horn of spinal gray matter
Lateral horn of spinal gray matter
Anterior horn of spinal gray matter
Motor area of the cerebral cortex
5. Which of the following is a recognized region of the spinal cord?
Lumbar
Thoracic
Pelvic
Cervical
6. This cranial nerve has no connection with the parasympathetic system:
CN V
CN III
CN XI
CN VII
7. Which of the following cranial nerves is NOT specifically part of the
parasympathetic nervous system?
III- Oculomotor
VII- Facial
V- Trigeminal
X- Vagus
,8. The lateral horn within the spinal cord is found at the following levels_______
A. C2-C8
C. L3-L8
B. T3-T9
T1-L2
9. What term describes the area of skin that is supplied by a single spinal nerve?
Plexus
Dermatome
Ganglion
Neuron
10. Describe the composition of spinal nerves and their significance in the
nervous system.
Spinal nerves are exclusively sensory and do not transmit motor
information.
Spinal nerves only carry motor signals from the brain to the muscles.
Spinal nerves are mixed nerves that contain both sensory and
motor fibers, connecting the central nervous system to the
peripheral nervous system.
Spinal nerves arise solely from the spinal cord and do not connect to
the brain.
11. What part of the spinal cord contains the cell bodies of preganglionic
sympathetic neurons?
Lateral horns of the spinal cord
, Gray matter of the brain
Dorsal horns of the spinal cord
Ventral horns of the spinal cord
12. Which neurotransmitter is primarily associated with the sympathetic nervous
system's postganglionic neurons?
Norepinephrine
Serotonin
Dopamine
Acetylcholine
13. If a person steps on a sharp object, which sequence of events occurs in the
reflex arc to protect the body?
The brain processes the information, and then sends signals to the
muscles to withdraw the foot.
The sensory receptors send signals directly to the brain, bypassing
the spinal cord.
The sensory receptors detect the sharp object, sensory neurons
send the signal to the spinal cord, and motor neurons activate
muscles to withdraw the foot.
Motor neurons detect the sharp object and send signals to the
sensory receptors.
14. List the components of a reflex arc in order
receptor, sensory neuron, center, motor neuron, effector organ
sensory neuron, motor neuron, receptor, center, effector organ
receptor, motor neuron, center, sensory neuron, effector organ
Nursing 2026 | Latest Update | Exam Prep Questions &
Answers | Graded A+
1. A section of skin which is innervated by a specific spinal nerve defines a
neural plexus
spinal reflex
dermatome
dural sinus
spinal fascicle
2. Which of the following is not true of somatic reflexes?
They are a motor response to a stimulus
They are unlearned
They require input from the cerebral cortex to occur
They are involuntary
They are rapid
3. What type of neurons are responsible for carrying information from the
thalamus to the cerebral cortex in the ascending tracts?
Third-order neurons
Second-order neurons
First-order neurons
Fourth-order neurons
,4. In which part of the spinal cord are the cell bodies of lower motor neurons
primarily found?
Dorsal horn of spinal gray matter
Lateral horn of spinal gray matter
Anterior horn of spinal gray matter
Motor area of the cerebral cortex
5. Which of the following is a recognized region of the spinal cord?
Lumbar
Thoracic
Pelvic
Cervical
6. This cranial nerve has no connection with the parasympathetic system:
CN V
CN III
CN XI
CN VII
7. Which of the following cranial nerves is NOT specifically part of the
parasympathetic nervous system?
III- Oculomotor
VII- Facial
V- Trigeminal
X- Vagus
,8. The lateral horn within the spinal cord is found at the following levels_______
A. C2-C8
C. L3-L8
B. T3-T9
T1-L2
9. What term describes the area of skin that is supplied by a single spinal nerve?
Plexus
Dermatome
Ganglion
Neuron
10. Describe the composition of spinal nerves and their significance in the
nervous system.
Spinal nerves are exclusively sensory and do not transmit motor
information.
Spinal nerves only carry motor signals from the brain to the muscles.
Spinal nerves are mixed nerves that contain both sensory and
motor fibers, connecting the central nervous system to the
peripheral nervous system.
Spinal nerves arise solely from the spinal cord and do not connect to
the brain.
11. What part of the spinal cord contains the cell bodies of preganglionic
sympathetic neurons?
Lateral horns of the spinal cord
, Gray matter of the brain
Dorsal horns of the spinal cord
Ventral horns of the spinal cord
12. Which neurotransmitter is primarily associated with the sympathetic nervous
system's postganglionic neurons?
Norepinephrine
Serotonin
Dopamine
Acetylcholine
13. If a person steps on a sharp object, which sequence of events occurs in the
reflex arc to protect the body?
The brain processes the information, and then sends signals to the
muscles to withdraw the foot.
The sensory receptors send signals directly to the brain, bypassing
the spinal cord.
The sensory receptors detect the sharp object, sensory neurons
send the signal to the spinal cord, and motor neurons activate
muscles to withdraw the foot.
Motor neurons detect the sharp object and send signals to the
sensory receptors.
14. List the components of a reflex arc in order
receptor, sensory neuron, center, motor neuron, effector organ
sensory neuron, motor neuron, receptor, center, effector organ
receptor, motor neuron, center, sensory neuron, effector organ
