NSG 3000
NSG-3000 Exam 4 Study Questions and
Answers 100% Verified 2026 Graded A+
Another term for clusters of nerve cell bodies
Nuclei
Branchlike structures for receiving electrochemical messages
Dendrites
The basic functional unit of the brain
Neuron
Long projection that carries electrical impulses away from the cell body
Axon
Supports, protects, and nourishes neurons
Glial cells
Neurotransmitters transmitted across this to cell membrane
Synapse
Clusters of nerve cell bodies
Ganglia
A cluster of cell bodies with the same function (e.g., respiratory center)
Center
Central part of the neuron
NSG 3000
,NSG 3000
Cell body
Increases speed of conduction for some axons
Myelin sheath
What are the parts of a neuron?
Dendrites, neuron, axon, cell body
What is the function of neurotransmitter molecules?
They transmit signals across a synapse.
What is a synapse?
The junction between two neurons where communication occurs.
What is the role of the myelin sheath?
It insulates the axon to speed up electrical impulses.
What are nodes of Ranvier?
Gaps in the myelin sheath that facilitate rapid signal transmission.
What are synaptic terminals?
The ends of axons where neurotransmitters are released.
What are receptors in the context of neurons?
Proteins on the surface of a neuron that bind neurotransmitters.
What are electrical impulses?
Signals that travel along the axon of a neuron.
What is myasthenia gravis (MG)?
NSG 3000
,NSG 3000
An autoimmune disease of the neuromuscular junction.
What do antibodies attack in myasthenia gravis?
Nicotinic acetylcholine receptors that control certain voluntary muscles.
What is the effect of antibodies on acetylcholine receptors in myasthenia gravis?
Decreased number of ACh receptor (AChR) sites at the neuromuscular junction.
What percentage of myasthenia gravis patients have anti-AChR antibodies detected
in their serum?
85-90%
Is myasthenia gravis more common in men or women?
More common in women than men.
What is the function of neurotransmitters?
They communicate messages from one neuron to another or to a specific target
tissue.
What effects can neurotransmitters have on target cells?
They can potentiate, terminate, or modulate a specific action, or can excite or
inhibit a target cell.
What can cause many neurologic disorders?
An imbalance in neurotransmitters.
What is the major neurotransmitter of the PNS?
Acetylcholine
What areas of the body are sources of Acetylcholine?
NSG 3000
, NSG 3000
Many areas of the brain; ANS
What is the usual action of Acetylcholine?
Usually excitatory, with parasympathetic effects sometimes inhibitory
Which diseases are associated with Acetylcholine?
Alzheimer's disease, Myasthenia Gravis, Parkinson's, Schizophrenia, Depression,
and ADHD
What medications are used for Alzheimer's disease related to Acetylcholine?
AchEIs, NMDA receptor antagonist
What medications are used for Myasthenia Gravis related to Acetylcholine?
AchEIs-Pyridostigmine (Mestinon), Neostigmine
The nurse is completing an assessment on a client with myasthenia gravis. Which
of the following historical recounting provides the most significant evidence
regarding when the disorder began?
A.Shortness of breath
B.Drooping eyelids
C.Muscle spasms
D.Sensitivity to bright light
Answer: Drooping eyelids
What is the source of Serotonin?
Brain stem, hypothalamus, dorsal horn of the spinal cord
What is the action of Serotonin?
NSG 3000
NSG-3000 Exam 4 Study Questions and
Answers 100% Verified 2026 Graded A+
Another term for clusters of nerve cell bodies
Nuclei
Branchlike structures for receiving electrochemical messages
Dendrites
The basic functional unit of the brain
Neuron
Long projection that carries electrical impulses away from the cell body
Axon
Supports, protects, and nourishes neurons
Glial cells
Neurotransmitters transmitted across this to cell membrane
Synapse
Clusters of nerve cell bodies
Ganglia
A cluster of cell bodies with the same function (e.g., respiratory center)
Center
Central part of the neuron
NSG 3000
,NSG 3000
Cell body
Increases speed of conduction for some axons
Myelin sheath
What are the parts of a neuron?
Dendrites, neuron, axon, cell body
What is the function of neurotransmitter molecules?
They transmit signals across a synapse.
What is a synapse?
The junction between two neurons where communication occurs.
What is the role of the myelin sheath?
It insulates the axon to speed up electrical impulses.
What are nodes of Ranvier?
Gaps in the myelin sheath that facilitate rapid signal transmission.
What are synaptic terminals?
The ends of axons where neurotransmitters are released.
What are receptors in the context of neurons?
Proteins on the surface of a neuron that bind neurotransmitters.
What are electrical impulses?
Signals that travel along the axon of a neuron.
What is myasthenia gravis (MG)?
NSG 3000
,NSG 3000
An autoimmune disease of the neuromuscular junction.
What do antibodies attack in myasthenia gravis?
Nicotinic acetylcholine receptors that control certain voluntary muscles.
What is the effect of antibodies on acetylcholine receptors in myasthenia gravis?
Decreased number of ACh receptor (AChR) sites at the neuromuscular junction.
What percentage of myasthenia gravis patients have anti-AChR antibodies detected
in their serum?
85-90%
Is myasthenia gravis more common in men or women?
More common in women than men.
What is the function of neurotransmitters?
They communicate messages from one neuron to another or to a specific target
tissue.
What effects can neurotransmitters have on target cells?
They can potentiate, terminate, or modulate a specific action, or can excite or
inhibit a target cell.
What can cause many neurologic disorders?
An imbalance in neurotransmitters.
What is the major neurotransmitter of the PNS?
Acetylcholine
What areas of the body are sources of Acetylcholine?
NSG 3000
, NSG 3000
Many areas of the brain; ANS
What is the usual action of Acetylcholine?
Usually excitatory, with parasympathetic effects sometimes inhibitory
Which diseases are associated with Acetylcholine?
Alzheimer's disease, Myasthenia Gravis, Parkinson's, Schizophrenia, Depression,
and ADHD
What medications are used for Alzheimer's disease related to Acetylcholine?
AchEIs, NMDA receptor antagonist
What medications are used for Myasthenia Gravis related to Acetylcholine?
AchEIs-Pyridostigmine (Mestinon), Neostigmine
The nurse is completing an assessment on a client with myasthenia gravis. Which
of the following historical recounting provides the most significant evidence
regarding when the disorder began?
A.Shortness of breath
B.Drooping eyelids
C.Muscle spasms
D.Sensitivity to bright light
Answer: Drooping eyelids
What is the source of Serotonin?
Brain stem, hypothalamus, dorsal horn of the spinal cord
What is the action of Serotonin?
NSG 3000
