INTRODUCTION TO THE NERVOUS
SYSTEM- SMITH- MED SURG
QUESTIONS WITH VERIFIED ANSWERS
[GRADED A+]
What are the 3 main divisions of the nervous system? - ✔✔Central
nervous system (CNS),
Peripheral nervous system (PNS),
Autonomic nervous system (ANS)
Neurotransmitters - ✔✔chemical messengers that cross the synaptic gaps
between neurons
Serotonin action - ✔✔stabilize mood;
Induces sleep;
Regulates temperature;
©morren2026/2027.Year published 2026.
,Controls appetite
Dopamine actions - ✔✔Integrates thoughts;
Promotes movement in conjunction with ACH;
Stimulates hypothalamic endocrine activity;
Enhances judgement
Norepinephrine action - ✔✔affects attention and concentration;
raises energy level;
heightens arousal
Acetylcholine (ACH) action - ✔✔assists memory storage;
promotes movement in conjunction with dopamine;
prepares for action
GABA action - ✔✔Reduces arousal and aggression;
inhibits excitatory neurotransmitters;
Decreases seizure potential
©morren2026/2027.Year published 2026.
, What are dendrites? What do they do? - ✔✔Branch-like structures.
Trasmit the impulse toward the cell body.
What do axons do? - ✔✔Conduct impulses away from the cell body
What is myelin? What does it do? - ✔✔A lipid protein complex that
encloses the neurons and makes them appear white thus "white matter".
Insulates the neuron and speeds conduction of the elec impulses along the
neuron.
Sensory neurons transmit impulses from special receptors to the
____________ or the ___________ - ✔✔spinal cord or the brain
Motor neurons transmit impulses from the CNS to regulate activity of
____________ or ____________ - ✔✔muscles or glands
Interneurons are connecting neurons that send signals between
__________ and _____________ neurons. Most of the brain is made up of
these types of neurons. - ✔✔sensory and motor neurons
©morren2026/2027.Year published 2026.
SYSTEM- SMITH- MED SURG
QUESTIONS WITH VERIFIED ANSWERS
[GRADED A+]
What are the 3 main divisions of the nervous system? - ✔✔Central
nervous system (CNS),
Peripheral nervous system (PNS),
Autonomic nervous system (ANS)
Neurotransmitters - ✔✔chemical messengers that cross the synaptic gaps
between neurons
Serotonin action - ✔✔stabilize mood;
Induces sleep;
Regulates temperature;
©morren2026/2027.Year published 2026.
,Controls appetite
Dopamine actions - ✔✔Integrates thoughts;
Promotes movement in conjunction with ACH;
Stimulates hypothalamic endocrine activity;
Enhances judgement
Norepinephrine action - ✔✔affects attention and concentration;
raises energy level;
heightens arousal
Acetylcholine (ACH) action - ✔✔assists memory storage;
promotes movement in conjunction with dopamine;
prepares for action
GABA action - ✔✔Reduces arousal and aggression;
inhibits excitatory neurotransmitters;
Decreases seizure potential
©morren2026/2027.Year published 2026.
, What are dendrites? What do they do? - ✔✔Branch-like structures.
Trasmit the impulse toward the cell body.
What do axons do? - ✔✔Conduct impulses away from the cell body
What is myelin? What does it do? - ✔✔A lipid protein complex that
encloses the neurons and makes them appear white thus "white matter".
Insulates the neuron and speeds conduction of the elec impulses along the
neuron.
Sensory neurons transmit impulses from special receptors to the
____________ or the ___________ - ✔✔spinal cord or the brain
Motor neurons transmit impulses from the CNS to regulate activity of
____________ or ____________ - ✔✔muscles or glands
Interneurons are connecting neurons that send signals between
__________ and _____________ neurons. Most of the brain is made up of
these types of neurons. - ✔✔sensory and motor neurons
©morren2026/2027.Year published 2026.
