Nervous System Test Questions with
Verified Answers
3 functions of the nervous system - Ans -sensory input, integration, motor output
Sensory Input (Afferent) - Ans -Sensory receptors (i.e.. eyes, nose, etc.) gather
information from the environment and send it to the brain. Sensory neurons are used to
deliver the gathered information. This represents the first step (and 1 of 3 functions) of a
nervous system response.
Integration - Ans -The brain process and understands the sensory input and decides
what to do in response. Represents the second step (and 1 of 3 functions) of a nervous
system response.
Motor Output (Efferent) - Ans -Messages are sent from the brain to the muscles and
glands to cause a response. Motor neurons are used to deliver the impulse (messages).
Represents the final step (and 1 of 3 functions) of a nervous system response.
Main Divisions of the Nervous System - Ans -Central Nervous System (CNS) and
Peripheral Nervous System (PNS)
Peripheral Nervous System (PNS) - Ans -Comprised of the nerves that extend from
the brain and spinal cord.
cranial nerves - Ans -12 pairs of nerves that carry messages to and from the brain
spinal nerves - Ans -31 pairs of nerves that carry impulses to and from the spinal cord
1
Page
, Central Nervous System (CNS) - Ans -Consists of the brain and spinal cord.; Acts as
Control Center and conducts process of Integration which involves the interpretation of
sensory input and dictating motor output.
Sensory Division of PNS - Ans -transmits impulses (messages) from sense organs to
the CNS (brain);(Afferent)
Motor Division of PNS - Ans -Transmits impulses from CNS to muscles and glands;
(Efferent); uses motor neurons
efferent - Ans -conveying messages from the CNS (brain); messages exiting the brain.
Uses motor neurons
afferent - Ans -conveying messages toward the CNS (brain); messages arriving at the
brain. Uses sensory neurons.
Autonomic Nervous System - Ans -A subdivision of the peripheral nervous system.
Controls involuntary activity of visceral (smooth) muscles and internal organs and glands.
Uses motor neurons
Somatic Nervous System - Ans -A subdivision of the peripheral nervous system.
Controls voluntary movement of the body's skeletal muscles. Uses motor neurons
Sympathetic Division of Autonomic Nervous System - Ans -Initiates fight or flight
response; Activates the body systems
Parasympathetic Division of the Autonomic Nervous System - Ans -"Rest and Digest";
Calms the body systems down
2
Page
Verified Answers
3 functions of the nervous system - Ans -sensory input, integration, motor output
Sensory Input (Afferent) - Ans -Sensory receptors (i.e.. eyes, nose, etc.) gather
information from the environment and send it to the brain. Sensory neurons are used to
deliver the gathered information. This represents the first step (and 1 of 3 functions) of a
nervous system response.
Integration - Ans -The brain process and understands the sensory input and decides
what to do in response. Represents the second step (and 1 of 3 functions) of a nervous
system response.
Motor Output (Efferent) - Ans -Messages are sent from the brain to the muscles and
glands to cause a response. Motor neurons are used to deliver the impulse (messages).
Represents the final step (and 1 of 3 functions) of a nervous system response.
Main Divisions of the Nervous System - Ans -Central Nervous System (CNS) and
Peripheral Nervous System (PNS)
Peripheral Nervous System (PNS) - Ans -Comprised of the nerves that extend from
the brain and spinal cord.
cranial nerves - Ans -12 pairs of nerves that carry messages to and from the brain
spinal nerves - Ans -31 pairs of nerves that carry impulses to and from the spinal cord
1
Page
, Central Nervous System (CNS) - Ans -Consists of the brain and spinal cord.; Acts as
Control Center and conducts process of Integration which involves the interpretation of
sensory input and dictating motor output.
Sensory Division of PNS - Ans -transmits impulses (messages) from sense organs to
the CNS (brain);(Afferent)
Motor Division of PNS - Ans -Transmits impulses from CNS to muscles and glands;
(Efferent); uses motor neurons
efferent - Ans -conveying messages from the CNS (brain); messages exiting the brain.
Uses motor neurons
afferent - Ans -conveying messages toward the CNS (brain); messages arriving at the
brain. Uses sensory neurons.
Autonomic Nervous System - Ans -A subdivision of the peripheral nervous system.
Controls involuntary activity of visceral (smooth) muscles and internal organs and glands.
Uses motor neurons
Somatic Nervous System - Ans -A subdivision of the peripheral nervous system.
Controls voluntary movement of the body's skeletal muscles. Uses motor neurons
Sympathetic Division of Autonomic Nervous System - Ans -Initiates fight or flight
response; Activates the body systems
Parasympathetic Division of the Autonomic Nervous System - Ans -"Rest and Digest";
Calms the body systems down
2
Page
