ACTION CPT COMPREHENSIVE
EXAMINATION 2026 FULL QUESTIONS AND
CORRECT ANSWERS
◉ 3 Major functions of the nervous system
Answer: sensory, integrative, and motor
◉ What is the functional unit of the nervous system?
Answer: the neuron
◉ What are the three main parts of a neuron?
Answer: the soma or body (the main component with the cell's
organelles), the axon (the long projection off the soma), the
dendrites (the branches where signals are received)
◉ What is the junction/space called between the axon of the nerve
cell and the dendrite of another (or receptor site)?
Answer: a synapse
◉ What allows a message/signal to jump a synapse?
Answer: neurotransmitters - these initiate a signal , called an action
potential, that travels to the receiving cell
, ◉ What is the isolating layer of an axon called? What is its purpose?
Answer: mylelin sheath; speed up nerve transmission
◉ The two main divisions of the nervous system.
Answer: Central Nervous System (CNS, brain and spinal cord) and
the peripheral nervous system (PNS, the nerves coming off the CNS)
◉ What are the 4 major sections of the brain?
Answer: 1. Cerebrum (muscle and organ control, thought, hearing,
language; outer portion is called the cerebral cortex)
2. Diencephalons (central part of the brain; regulates
glands/hormones)
3. Cerebellum (balance, posture, coordination)
4. Brain Stem (connects cerebrum and cerebellum to spinal cord;
center for control of visual and auditory reflexes, heart rate, blood
pressure, and breathing)
◉ What is the name of the 3-layer protective membrane that
protects the brain?
Answer: meninges
◉ What are the two divisions of the Peripheral Nervous System
(PNS)?
EXAMINATION 2026 FULL QUESTIONS AND
CORRECT ANSWERS
◉ 3 Major functions of the nervous system
Answer: sensory, integrative, and motor
◉ What is the functional unit of the nervous system?
Answer: the neuron
◉ What are the three main parts of a neuron?
Answer: the soma or body (the main component with the cell's
organelles), the axon (the long projection off the soma), the
dendrites (the branches where signals are received)
◉ What is the junction/space called between the axon of the nerve
cell and the dendrite of another (or receptor site)?
Answer: a synapse
◉ What allows a message/signal to jump a synapse?
Answer: neurotransmitters - these initiate a signal , called an action
potential, that travels to the receiving cell
, ◉ What is the isolating layer of an axon called? What is its purpose?
Answer: mylelin sheath; speed up nerve transmission
◉ The two main divisions of the nervous system.
Answer: Central Nervous System (CNS, brain and spinal cord) and
the peripheral nervous system (PNS, the nerves coming off the CNS)
◉ What are the 4 major sections of the brain?
Answer: 1. Cerebrum (muscle and organ control, thought, hearing,
language; outer portion is called the cerebral cortex)
2. Diencephalons (central part of the brain; regulates
glands/hormones)
3. Cerebellum (balance, posture, coordination)
4. Brain Stem (connects cerebrum and cerebellum to spinal cord;
center for control of visual and auditory reflexes, heart rate, blood
pressure, and breathing)
◉ What is the name of the 3-layer protective membrane that
protects the brain?
Answer: meninges
◉ What are the two divisions of the Peripheral Nervous System
(PNS)?
