ATI TEAS 7 NERVOUS SYSTEM EXAM PRACTICE | ANATOMY & PHYSIOLOGY
STUDY GUIDE | COMPREHENSIVE TESTBANK WITH PRACTICE QUESTIONS &
ANSWERS | LATEST UPDATE 2026/2027
I. Nervous System Organization and Functional Divisions
II. Neurons, Glial Cells, and Neural Signaling
III. Membrane Potentials and Action Potentials
IV. Synaptic Transmission and Neurotransmitters
V. Central and Peripheral Nervous Systems
VI. Brain, Spinal Cord, and Reflexes
VII. Sensory Processing and Autonomic Regulation
VIII. Integrated Clinical and Applied Nervous System Concepts
INTRODUCTION
This comprehensive ATI TEAS 7 Nervous System practice examination focuses on
the anatomy and physiology concepts required to analyze neural communication,
sensory processing, motor control, reflex activity, and autonomic regulation.
Questions emphasize application and interpretation rather than simple
memorization. Students should be prepared to distinguish central and peripheral
nervous system functions, interpret membrane-potential changes, analyze action-
potential propagation, identify neurotransmitter effects, and connect nervous-
system structures with physiological outcomes. The examination also incorporates
realistic clinical scenarios requiring careful reasoning about lesions, reflexes, sensory
pathways, and autonomic responses. Expect progressively challenging questions
designed to strengthen conceptual understanding and prepare for advanced
Anatomy & Physiology examination performance.
Question 1
A neuron is maintained at its resting membrane potential. A stimulus causes the
membrane potential to become less negative, but the threshold required to initiate
an action potential is not reached. Which event most accurately describes this
response?
A. Repolarization
B. Hyperpolarization
,C. Subthreshold depolarization
D. Absolute refractory activity
🔴 Correct Answer: C. Subthreshold depolarization.
🔵 Explanation: A depolarization makes the membrane potential less negative. If the
change does not reach threshold, voltage-gated sodium channels do not produce the
regenerative response necessary for an action potential.
Question 2
A researcher selectively damages the myelin sheath surrounding axons in the
peripheral nervous system while leaving the axons themselves structurally intact.
Which consequence is most likely?
A. Increased speed of action-potential conduction
B. Impaired saltatory conduction
C. Increased neurotransmitter synthesis
D. Complete prevention of resting membrane potential formation
🔴 Correct Answer: B. Impaired saltatory conduction.
🔵 Explanation: Myelin electrically insulates axons and allows action potentials to
effectively "jump" between nodes of Ranvier. Loss of peripheral myelin slows or
disrupts neural conduction.
Question 3
A patient touches a hot surface and immediately withdraws the hand before
consciously recognizing the pain. Which neural mechanism best explains the rapid
response?
A. Direct activation of the cerebral cortex without spinal processing
B. A spinal reflex arc that activates motor neurons before conscious perception
C. Parasympathetic stimulation of skeletal muscle
D. Transmission exclusively through the autonomic nervous system
🔴 Correct Answer: B. A spinal reflex arc that activates motor neurons before
conscious perception.
🔵 Explanation: Withdrawal reflexes can be integrated within the spinal cord. Sensory
,input activates interneurons and motor neurons, producing a rapid response while
sensory information simultaneously travels to the brain for conscious perception.
Question 4
Which change would most directly increase the likelihood that a postsynaptic
neuron reaches threshold?
A. Increased chloride ion entry into the neuron
B. Increased potassium ion exit from the neuron
C. Increased sodium ion entry into the neuron
D. Decreased excitatory neurotransmitter release
🔴 Correct Answer: C. Increased sodium ion entry into the neuron.
🔵 Explanation: Sodium entry makes the postsynaptic membrane more positive,
producing an excitatory postsynaptic potential that moves the membrane toward
threshold.
Question 5
A patient has normal sensory perception but cannot voluntarily initiate coordinated
skeletal-muscle movements after damage to a specific brain region. Which structure
is most directly associated with planning and initiating voluntary motor activity?
A. Cerebral cortex
B. Medulla oblongata
C. Hypothalamus
D. Spinal ganglion
🔴 Correct Answer: A. Cerebral cortex.
🔵 Explanation: Motor areas of the cerebral cortex participate in planning and
initiating voluntary movement. The brainstem and spinal cord also contribute to
motor control but do not replace cortical voluntary motor planning.
Question 6
A pharmacologic agent prevents voltage-gated sodium channels from opening in
an axon. What is the most immediate effect?
, A. Failure to initiate or propagate a normal action potential
B. Increased release of neurotransmitter into the synaptic cleft
C. Increased calcium entry into the presynaptic terminal
D. Continuous depolarization caused by sodium influx
🔴 Correct Answer: A. Failure to initiate or propagate a normal action potential.
🔵 Explanation: Voltage-gated sodium channels are essential for the rapid
depolarization phase of the action potential. Blocking them prevents normal action-
potential generation and propagation.
Question 7
Which glial cell is primarily responsible for producing myelin in the central nervous
system?
A. Schwann cell
B. Astrocyte
C. Oligodendrocyte
D. Microglial cell
🔴 Correct Answer: C. Oligodendrocyte.
🔵 Explanation: Oligodendrocytes form myelin in the central nervous system,
whereas Schwann cells form myelin around peripheral nervous system axons.
Question 8
A patient experiences severe difficulty maintaining body temperature and
regulating hunger after a small lesion in the brain. Which structure is most likely
affected?
A. Hypothalamus
B. Cerebellum
C. Occipital lobe
D. Medulla oblongata
🔴 Correct Answer: A. Hypothalamus.
🔵 Explanation: The hypothalamus coordinates homeostatic functions including
thermoregulation, hunger, thirst, endocrine regulation, and aspects of autonomic
activity.
STUDY GUIDE | COMPREHENSIVE TESTBANK WITH PRACTICE QUESTIONS &
ANSWERS | LATEST UPDATE 2026/2027
I. Nervous System Organization and Functional Divisions
II. Neurons, Glial Cells, and Neural Signaling
III. Membrane Potentials and Action Potentials
IV. Synaptic Transmission and Neurotransmitters
V. Central and Peripheral Nervous Systems
VI. Brain, Spinal Cord, and Reflexes
VII. Sensory Processing and Autonomic Regulation
VIII. Integrated Clinical and Applied Nervous System Concepts
INTRODUCTION
This comprehensive ATI TEAS 7 Nervous System practice examination focuses on
the anatomy and physiology concepts required to analyze neural communication,
sensory processing, motor control, reflex activity, and autonomic regulation.
Questions emphasize application and interpretation rather than simple
memorization. Students should be prepared to distinguish central and peripheral
nervous system functions, interpret membrane-potential changes, analyze action-
potential propagation, identify neurotransmitter effects, and connect nervous-
system structures with physiological outcomes. The examination also incorporates
realistic clinical scenarios requiring careful reasoning about lesions, reflexes, sensory
pathways, and autonomic responses. Expect progressively challenging questions
designed to strengthen conceptual understanding and prepare for advanced
Anatomy & Physiology examination performance.
Question 1
A neuron is maintained at its resting membrane potential. A stimulus causes the
membrane potential to become less negative, but the threshold required to initiate
an action potential is not reached. Which event most accurately describes this
response?
A. Repolarization
B. Hyperpolarization
,C. Subthreshold depolarization
D. Absolute refractory activity
🔴 Correct Answer: C. Subthreshold depolarization.
🔵 Explanation: A depolarization makes the membrane potential less negative. If the
change does not reach threshold, voltage-gated sodium channels do not produce the
regenerative response necessary for an action potential.
Question 2
A researcher selectively damages the myelin sheath surrounding axons in the
peripheral nervous system while leaving the axons themselves structurally intact.
Which consequence is most likely?
A. Increased speed of action-potential conduction
B. Impaired saltatory conduction
C. Increased neurotransmitter synthesis
D. Complete prevention of resting membrane potential formation
🔴 Correct Answer: B. Impaired saltatory conduction.
🔵 Explanation: Myelin electrically insulates axons and allows action potentials to
effectively "jump" between nodes of Ranvier. Loss of peripheral myelin slows or
disrupts neural conduction.
Question 3
A patient touches a hot surface and immediately withdraws the hand before
consciously recognizing the pain. Which neural mechanism best explains the rapid
response?
A. Direct activation of the cerebral cortex without spinal processing
B. A spinal reflex arc that activates motor neurons before conscious perception
C. Parasympathetic stimulation of skeletal muscle
D. Transmission exclusively through the autonomic nervous system
🔴 Correct Answer: B. A spinal reflex arc that activates motor neurons before
conscious perception.
🔵 Explanation: Withdrawal reflexes can be integrated within the spinal cord. Sensory
,input activates interneurons and motor neurons, producing a rapid response while
sensory information simultaneously travels to the brain for conscious perception.
Question 4
Which change would most directly increase the likelihood that a postsynaptic
neuron reaches threshold?
A. Increased chloride ion entry into the neuron
B. Increased potassium ion exit from the neuron
C. Increased sodium ion entry into the neuron
D. Decreased excitatory neurotransmitter release
🔴 Correct Answer: C. Increased sodium ion entry into the neuron.
🔵 Explanation: Sodium entry makes the postsynaptic membrane more positive,
producing an excitatory postsynaptic potential that moves the membrane toward
threshold.
Question 5
A patient has normal sensory perception but cannot voluntarily initiate coordinated
skeletal-muscle movements after damage to a specific brain region. Which structure
is most directly associated with planning and initiating voluntary motor activity?
A. Cerebral cortex
B. Medulla oblongata
C. Hypothalamus
D. Spinal ganglion
🔴 Correct Answer: A. Cerebral cortex.
🔵 Explanation: Motor areas of the cerebral cortex participate in planning and
initiating voluntary movement. The brainstem and spinal cord also contribute to
motor control but do not replace cortical voluntary motor planning.
Question 6
A pharmacologic agent prevents voltage-gated sodium channels from opening in
an axon. What is the most immediate effect?
, A. Failure to initiate or propagate a normal action potential
B. Increased release of neurotransmitter into the synaptic cleft
C. Increased calcium entry into the presynaptic terminal
D. Continuous depolarization caused by sodium influx
🔴 Correct Answer: A. Failure to initiate or propagate a normal action potential.
🔵 Explanation: Voltage-gated sodium channels are essential for the rapid
depolarization phase of the action potential. Blocking them prevents normal action-
potential generation and propagation.
Question 7
Which glial cell is primarily responsible for producing myelin in the central nervous
system?
A. Schwann cell
B. Astrocyte
C. Oligodendrocyte
D. Microglial cell
🔴 Correct Answer: C. Oligodendrocyte.
🔵 Explanation: Oligodendrocytes form myelin in the central nervous system,
whereas Schwann cells form myelin around peripheral nervous system axons.
Question 8
A patient experiences severe difficulty maintaining body temperature and
regulating hunger after a small lesion in the brain. Which structure is most likely
affected?
A. Hypothalamus
B. Cerebellum
C. Occipital lobe
D. Medulla oblongata
🔴 Correct Answer: A. Hypothalamus.
🔵 Explanation: The hypothalamus coordinates homeostatic functions including
thermoregulation, hunger, thirst, endocrine regulation, and aspects of autonomic
activity.
