1
A&P1 - Module 4 Study Set Questions and
Answers (100% Correct Answers) Already
Graded A+
The large anterior gray horns of the spinal cord contain mainly
Ans: somatic motor nuclei
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Mary is in an automobile accident and suffers a spinal cord injury.
She has lost feeling in her lower body. Her doctor tells her that
swelling is compressing a portion of her spinal cord. Which part of
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her cord is likely to be compressed? Ans: ascending tracts
The spinal cord is part of the _____ nervous system. Ans: central
The neural "wiring" of a single reflex is called a(n) Ans: reflex arc
You are sitting at a Mexican restaurant waiting for your food. The
waiter brings a very hot plate, telling you to be careful about
touching it. You touch it anyways, producing a pain sensation in
your fingers, a withdrawal of your hand, and an auditory
comment of what you are thinking. This scenario represents a
_____ neuronal circuit. Ans: parallel processing
A motor neuron typically receives input from neurons that
originate in various areas of the brain. This type of circuit is a Ans:
convergent circuit
, 2
Preganglionic and postganglionic fibers of the autonomic nervous
system that innervate internal organs are collectively called Ans:
sympathetic nerves
A posterior and anterior root of each spinal segment unite to form
a Ans: spinal nerve
Which of the following is not a way that reflexes are classified?
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Ans: sympathetic/parasympathetic
Each of the following nerves originates in the lumbar plexus
except the _____ nerve. Ans: sciatic
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Nerve tracts or fasciculi make up the Ans: white columns
Spinal interneurons inhibit antagonist motor neurons in a process
called Ans: reciprocal inhibition
Figure 13-1 The Spinal Cord
Identify the structure labeled "9". Ans: anterior gray commissure
Figure 13-2 Spinal Nerves
Identify the structure labeled "2". Ans: anterior ramus
, 3
Sensory information from visceral organs is carried by the Ans:
sympathetic nerve
The _____ nerve, which arises in the cervical plexus, innervates the
diaphragm. Ans: phrenic
In the condition _____, a virus infects posterior root ganglia,
causing a painful rash whose distribution corresponds to that of
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the affected sensory nerves as seen in their dermatomes. Ans:
shingles
Spinal nerves from the sacral region of the cord innervate the
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_____ muscles. Ans: leg
Figure 13-1 The Spinal Cord
Identify the structure labeled "4". Ans: posterior gray horn
Recognized neuronal circuit patterns include all of the following
except Ans: multipolar
The gray horns of the spinal cord contain mainly Ans: neuron cell
bodies
The outward projections from the central gray matter of the spinal
cord, seen easily in microscopic spinal cord cross sections, are
called Ans: horns
, 4
In _____, one neuron synapses on several postsynaptic neurons.
Ans: divergence
The flexor reflex Ans: moves a limb away from a painful stimulus
The layer of meninges in direct contact with the spinal cord is the
Ans: pia mater
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Reflexes that activate muscles on the same side of the body as
the stimulus are called Ans: ipsilateral
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Figure 13-2 Spinal Nerves
Identify the structure labeled "6". Ans: sympathetic ganglion
The postganglionic fibers that innervate glands in the body wall or
smooth muscles in limbs are Ans: gray rami communicantes
Enlarged area of the spinal cord from which nerves to the
shoulder and upper limbs arise Ans: cervical enlargement
The most complicated spinal reflexes are called Ans:
intersegmental reflex arcs
The white matter of the spinal cord is mainly Ans: myelinated
axons
A&P1 - Module 4 Study Set Questions and
Answers (100% Correct Answers) Already
Graded A+
The large anterior gray horns of the spinal cord contain mainly
Ans: somatic motor nuclei
© 2025 Assignment Expert
Mary is in an automobile accident and suffers a spinal cord injury.
She has lost feeling in her lower body. Her doctor tells her that
swelling is compressing a portion of her spinal cord. Which part of
Guru01 - Stuvia
her cord is likely to be compressed? Ans: ascending tracts
The spinal cord is part of the _____ nervous system. Ans: central
The neural "wiring" of a single reflex is called a(n) Ans: reflex arc
You are sitting at a Mexican restaurant waiting for your food. The
waiter brings a very hot plate, telling you to be careful about
touching it. You touch it anyways, producing a pain sensation in
your fingers, a withdrawal of your hand, and an auditory
comment of what you are thinking. This scenario represents a
_____ neuronal circuit. Ans: parallel processing
A motor neuron typically receives input from neurons that
originate in various areas of the brain. This type of circuit is a Ans:
convergent circuit
, 2
Preganglionic and postganglionic fibers of the autonomic nervous
system that innervate internal organs are collectively called Ans:
sympathetic nerves
A posterior and anterior root of each spinal segment unite to form
a Ans: spinal nerve
Which of the following is not a way that reflexes are classified?
© 2025 Assignment Expert
Ans: sympathetic/parasympathetic
Each of the following nerves originates in the lumbar plexus
except the _____ nerve. Ans: sciatic
Guru01 - Stuvia
Nerve tracts or fasciculi make up the Ans: white columns
Spinal interneurons inhibit antagonist motor neurons in a process
called Ans: reciprocal inhibition
Figure 13-1 The Spinal Cord
Identify the structure labeled "9". Ans: anterior gray commissure
Figure 13-2 Spinal Nerves
Identify the structure labeled "2". Ans: anterior ramus
, 3
Sensory information from visceral organs is carried by the Ans:
sympathetic nerve
The _____ nerve, which arises in the cervical plexus, innervates the
diaphragm. Ans: phrenic
In the condition _____, a virus infects posterior root ganglia,
causing a painful rash whose distribution corresponds to that of
© 2025 Assignment Expert
the affected sensory nerves as seen in their dermatomes. Ans:
shingles
Spinal nerves from the sacral region of the cord innervate the
Guru01 - Stuvia
_____ muscles. Ans: leg
Figure 13-1 The Spinal Cord
Identify the structure labeled "4". Ans: posterior gray horn
Recognized neuronal circuit patterns include all of the following
except Ans: multipolar
The gray horns of the spinal cord contain mainly Ans: neuron cell
bodies
The outward projections from the central gray matter of the spinal
cord, seen easily in microscopic spinal cord cross sections, are
called Ans: horns
, 4
In _____, one neuron synapses on several postsynaptic neurons.
Ans: divergence
The flexor reflex Ans: moves a limb away from a painful stimulus
The layer of meninges in direct contact with the spinal cord is the
Ans: pia mater
© 2025 Assignment Expert
Reflexes that activate muscles on the same side of the body as
the stimulus are called Ans: ipsilateral
Guru01 - Stuvia
Figure 13-2 Spinal Nerves
Identify the structure labeled "6". Ans: sympathetic ganglion
The postganglionic fibers that innervate glands in the body wall or
smooth muscles in limbs are Ans: gray rami communicantes
Enlarged area of the spinal cord from which nerves to the
shoulder and upper limbs arise Ans: cervical enlargement
The most complicated spinal reflexes are called Ans:
intersegmental reflex arcs
The white matter of the spinal cord is mainly Ans: myelinated
axons
