Pathophysiology: Nervous System Exam Questions
with 100% Verified Correct Answers
What are the 2 types of cells in the nervous system - Correct Answer Neurons and neuroglia (glial
cells)
Where are dendrites and what do they do? - Correct Answer Come off of the cell body; receive
signals from other cells
Where is the axon terminal - Correct Answer Other side of the cell body
The axon is the - Correct Answer Long part that connects the cell body to the axon terminal
Cell bodies packed together in the CNS are called - Correct Answer Nuclei
Cell bodies packed in the PNS are called - Correct Answer Ganglia
Dendrities carry signals which way? - Correct Answer TO the cell body; they receive the signals
Where do axons carry the signals - Correct Answer Away from the cell body
These axons are _________ ; which helps them send the signal faster - Correct Answer Myelinated
What is the space between the myelin sheaths called? The small parts with no covering - Correct
Answer Nodes of Ranvier
Unipolar would be a __________ neuron - Correct Answer Sensory Neuron
Multipolar would be - Correct Answer Motor Neuron
Pyrimidal neurons are found only - Correct Answer In the CNS
Bipolar neurons are called - Correct Answer Interneurons
, Afferent neurons carry signals where? - Correct Answer From the body to the CNS
Efferent neurons carry signals where? - Correct Answer From the CNS to the body
Interneurons are only found - Correct Answer In the CNS
How many support cells are in the CNS; PNS - Correct Answer 4; 1
The most abundant support cell is - Correct Answer Astrocytes
What do astrocytes do? - Correct Answer Provide nutrition and anchor neurons blood supply
What do oligodendrocytes do? - Correct Answer Produce myelin in the CNS
What do ependymal cells do? - Correct Answer Line the cavities of the CNS; and make the walls of
the ventricles; secrete CSF
What are microglia - Correct Answer Immune cells of the CNS
What is the only support cell in the PNS - Correct Answer Schwann Cells
What do Schwann Cells do - Correct Answer Provide myelination to axons in the PNS
They also have some - Correct Answer Phagocytic activity if needed
Membrane potential is the - Correct Answer Difference in charge inside the cell and outside
Resting membrane potential is mainly kept by and what is it? - Correct Answer Na+/K+ pump (3NA+
out and 2K+ in) ; -70 mV
This pump uses how much ATP of the cell - Correct Answer ~40%
with 100% Verified Correct Answers
What are the 2 types of cells in the nervous system - Correct Answer Neurons and neuroglia (glial
cells)
Where are dendrites and what do they do? - Correct Answer Come off of the cell body; receive
signals from other cells
Where is the axon terminal - Correct Answer Other side of the cell body
The axon is the - Correct Answer Long part that connects the cell body to the axon terminal
Cell bodies packed together in the CNS are called - Correct Answer Nuclei
Cell bodies packed in the PNS are called - Correct Answer Ganglia
Dendrities carry signals which way? - Correct Answer TO the cell body; they receive the signals
Where do axons carry the signals - Correct Answer Away from the cell body
These axons are _________ ; which helps them send the signal faster - Correct Answer Myelinated
What is the space between the myelin sheaths called? The small parts with no covering - Correct
Answer Nodes of Ranvier
Unipolar would be a __________ neuron - Correct Answer Sensory Neuron
Multipolar would be - Correct Answer Motor Neuron
Pyrimidal neurons are found only - Correct Answer In the CNS
Bipolar neurons are called - Correct Answer Interneurons
, Afferent neurons carry signals where? - Correct Answer From the body to the CNS
Efferent neurons carry signals where? - Correct Answer From the CNS to the body
Interneurons are only found - Correct Answer In the CNS
How many support cells are in the CNS; PNS - Correct Answer 4; 1
The most abundant support cell is - Correct Answer Astrocytes
What do astrocytes do? - Correct Answer Provide nutrition and anchor neurons blood supply
What do oligodendrocytes do? - Correct Answer Produce myelin in the CNS
What do ependymal cells do? - Correct Answer Line the cavities of the CNS; and make the walls of
the ventricles; secrete CSF
What are microglia - Correct Answer Immune cells of the CNS
What is the only support cell in the PNS - Correct Answer Schwann Cells
What do Schwann Cells do - Correct Answer Provide myelination to axons in the PNS
They also have some - Correct Answer Phagocytic activity if needed
Membrane potential is the - Correct Answer Difference in charge inside the cell and outside
Resting membrane potential is mainly kept by and what is it? - Correct Answer Na+/K+ pump (3NA+
out and 2K+ in) ; -70 mV
This pump uses how much ATP of the cell - Correct Answer ~40%
