ANP 1106 Midterm 2 Study Guide: Questions
and Correct Answers 2026 Update | 100%.
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SECTION A: NERVOUS SYSTEM ORGANIZATION
Q1. What are the two main divisions of the nervous system?
A) Central nervous system (CNS) and Peripheral nervous system (PNS)
B) Somatic nervous system and Autonomic nervous system
C) Sympathetic and Parasympathetic
D) Sensory and Motor divisions
Answer: A (CNS and PNS)
Rationale: The nervous system is structurally divided into the Central Nervous System
(brain and spinal cord), which serves as the integrative and control center, and the
Peripheral Nervous System (cranial and spinal nerves), which provides communication
lines between the CNS and the rest of the body.
Q2. Which division of the nervous system is responsible for "fight or flight"
responses?
A) Sympathetic division
B) Parasympathetic division
,C) Somatic division
D) Sensory division
Answer: A (Sympathetic division)
Rationale: The sympathetic division mobilizes the body during stress or emergency
situations, increasing heart rate, blood pressure, and releasing epinephrine.
Q3. Which division of the nervous system is responsible for "rest and digest"
functions?
A) Sympathetic division
B) Parasympathetic division
C) Somatic division
D) Motor division
Answer: B (Parasympathetic division)
Rationale: The parasympathetic division is dominant during restful conditions,
promoting "rest and digest" activities that conserve and restore energy.
Q4. What is the function of the sensory division of the PNS?
A) Carries motor commands from CNS to effectors
B) Carries sensory information from receptors to CNS
C) Controls voluntary movements
D) Regulates autonomic functions only
Answer: B (Carries sensory information from receptors to CNS)
,Rationale: The sensory (afferent) division carries impulses from sensory receptors
toward the CNS.
Q5. What is the function of the motor division of the PNS?
A) Carries sensory information to CNS
B) Carries motor commands from CNS to effectors
C) Only controls cardiac muscle
D) Only controls smooth muscle
Answer: B (Carries motor commands from CNS to effectors)
Rationale: The motor (efferent) division carries impulses away from the CNS to effector
organs (muscles and glands).
Q6. Which glial cells are responsible for forming the myelin sheath in the CNS?
A) Schwann cells
B) Satellite cells
C) Oligodendrocytes
D) Microglia
Answer: C (Oligodendrocytes)
Rationale: Oligodendrocytes are CNS glial cells with processes that wrap around CNS
nerve fibers, forming insulating myelin sheaths. Schwann cells perform this function in
the PNS.
, Q7. What type of neuron is the most common in humans based on structural
classification?
A) Unipolar
B) Bipolar
C) Multipolar
D) Tripolar
Answer: C (Multipolar)
Rationale: Multipolar neurons have three or more processes (one axon, multiple
dendrites) and are the most common neuron type in humans. Most motor neurons and
interneurons are multipolar.
Q8. What is a collection of neuron cell bodies called when found in the CNS?
A) Ganglion
B) Nucleus
C) Tract
D) Nerve
Answer: B (Nucleus)
Rationale: In the CNS, a collection of neuron cell bodies is called a nucleus. In the PNS,
the same structure is called a ganglion.
and Correct Answers 2026 Update | 100%.
.
SECTION A: NERVOUS SYSTEM ORGANIZATION
Q1. What are the two main divisions of the nervous system?
A) Central nervous system (CNS) and Peripheral nervous system (PNS)
B) Somatic nervous system and Autonomic nervous system
C) Sympathetic and Parasympathetic
D) Sensory and Motor divisions
Answer: A (CNS and PNS)
Rationale: The nervous system is structurally divided into the Central Nervous System
(brain and spinal cord), which serves as the integrative and control center, and the
Peripheral Nervous System (cranial and spinal nerves), which provides communication
lines between the CNS and the rest of the body.
Q2. Which division of the nervous system is responsible for "fight or flight"
responses?
A) Sympathetic division
B) Parasympathetic division
,C) Somatic division
D) Sensory division
Answer: A (Sympathetic division)
Rationale: The sympathetic division mobilizes the body during stress or emergency
situations, increasing heart rate, blood pressure, and releasing epinephrine.
Q3. Which division of the nervous system is responsible for "rest and digest"
functions?
A) Sympathetic division
B) Parasympathetic division
C) Somatic division
D) Motor division
Answer: B (Parasympathetic division)
Rationale: The parasympathetic division is dominant during restful conditions,
promoting "rest and digest" activities that conserve and restore energy.
Q4. What is the function of the sensory division of the PNS?
A) Carries motor commands from CNS to effectors
B) Carries sensory information from receptors to CNS
C) Controls voluntary movements
D) Regulates autonomic functions only
Answer: B (Carries sensory information from receptors to CNS)
,Rationale: The sensory (afferent) division carries impulses from sensory receptors
toward the CNS.
Q5. What is the function of the motor division of the PNS?
A) Carries sensory information to CNS
B) Carries motor commands from CNS to effectors
C) Only controls cardiac muscle
D) Only controls smooth muscle
Answer: B (Carries motor commands from CNS to effectors)
Rationale: The motor (efferent) division carries impulses away from the CNS to effector
organs (muscles and glands).
Q6. Which glial cells are responsible for forming the myelin sheath in the CNS?
A) Schwann cells
B) Satellite cells
C) Oligodendrocytes
D) Microglia
Answer: C (Oligodendrocytes)
Rationale: Oligodendrocytes are CNS glial cells with processes that wrap around CNS
nerve fibers, forming insulating myelin sheaths. Schwann cells perform this function in
the PNS.
, Q7. What type of neuron is the most common in humans based on structural
classification?
A) Unipolar
B) Bipolar
C) Multipolar
D) Tripolar
Answer: C (Multipolar)
Rationale: Multipolar neurons have three or more processes (one axon, multiple
dendrites) and are the most common neuron type in humans. Most motor neurons and
interneurons are multipolar.
Q8. What is a collection of neuron cell bodies called when found in the CNS?
A) Ganglion
B) Nucleus
C) Tract
D) Nerve
Answer: B (Nucleus)
Rationale: In the CNS, a collection of neuron cell bodies is called a nucleus. In the PNS,
the same structure is called a ganglion.
