INTRO TO NEUROSCIENCE EXAM 1 PRACTICE QUESTIONS AND
ANSWERS NEWEST UPDATED 2025 A COMPLETE SOLUTION
ALL ANSWERS CORRECT 100% DETAILED BEST GRADED A+ FOR
SUCCESS
This is the fluid contained in the ventricles. It is derived from the choroid plexus, a specialized
vascular tissue within ventricle walls - CORRECT ANSWERS What is cerebrospinal fluid
and from where is it derived?
1) It is derived from the choroid plexus - secreted from the ventricle wall tissue.
2) Capillary blood is filtered and CSF enters the ventricle.
3) CSF leaves the ventricles through the foramina (openings) in the subarachnoid space.
4) CSF drains out of subarachnoid space through arachnoid villi/granulations into subdural
sinuses.
5) CSF goes back into general blood circulation. - CORRECT ANSWERS What is the
process for CSF secretion?
Extending down to the spinal cord. - CORRECT ANSWERS What is the range of the
ventricular system?
It acts as a buoyant force that suspends the brain (3lbs to 25-30g). [neutral buoyancy: brain can
be dense w/o being damaged by its own weight]. It also provides a fluid buffer that acts as a
shock absorber/protective force. - CORRECT ANSWERS What is the purpose of CSF?
They are non-fenestrated, meaning they have tight junctions that form a barrier. - CORRECT
ANSWERS What is distinguishable about brain capillaries?
Respiratory gases, substances of abuse, glucose, insulin, oxygen, amino acids (lipid-solubles or
those that have a specific transporter). - CORRECT ANSWERS What gets through the
BBB?
, INTRO TO NEUROSCIENCE EXAM 1 PRACTICE QUESTIONS AND
ANSWERS NEWEST UPDATED 2025 A COMPLETE SOLUTION
ALL ANSWERS CORRECT 100% DETAILED BEST GRADED A+ FOR
SUCCESS
Electrical to chemical to electrical ; foundation of synaptic transmission - CORRECT
ANSWERS What is the neuron signal conversion process? What is this the foundation of?
1) The presynaptic neuron sends an electrical signal from the axon hillock to the axon terminal.
2) At the synapse, the electrical signal gets converted to a chemical signal.
3) The postsynaptic neuron converts the chemical signal to an electrical signal. - CORRECT
ANSWERS What is the process of synaptic transmission?
This is the junction between two neurons where information is exchanged. - CORRECT
ANSWERS What is a synapse?
This surrounds the neuron (all cells) [it's a lipid bilayer]. It is composed of phospholipids and is
generally impermeable to charged molecules. The charged phosphate heads face the outside of
the cell. - CORRECT ANSWERS What is the plasma membrane and what is it composed
of?
This will not allow hydrated ions into the neuron. - CORRECT ANSWERS What is a
hydrophobic lipid membrane?
It contains ion channels proteins embedded in the membrane, which can be selective for
different ions and provide a path for ions to flow through the membrane. - CORRECT
ANSWERS Why is the plasma membrane semipermeable?
These are always open and set the resting membrane potential. - CORRECT ANSWERS
What are leak channels?
ANSWERS NEWEST UPDATED 2025 A COMPLETE SOLUTION
ALL ANSWERS CORRECT 100% DETAILED BEST GRADED A+ FOR
SUCCESS
This is the fluid contained in the ventricles. It is derived from the choroid plexus, a specialized
vascular tissue within ventricle walls - CORRECT ANSWERS What is cerebrospinal fluid
and from where is it derived?
1) It is derived from the choroid plexus - secreted from the ventricle wall tissue.
2) Capillary blood is filtered and CSF enters the ventricle.
3) CSF leaves the ventricles through the foramina (openings) in the subarachnoid space.
4) CSF drains out of subarachnoid space through arachnoid villi/granulations into subdural
sinuses.
5) CSF goes back into general blood circulation. - CORRECT ANSWERS What is the
process for CSF secretion?
Extending down to the spinal cord. - CORRECT ANSWERS What is the range of the
ventricular system?
It acts as a buoyant force that suspends the brain (3lbs to 25-30g). [neutral buoyancy: brain can
be dense w/o being damaged by its own weight]. It also provides a fluid buffer that acts as a
shock absorber/protective force. - CORRECT ANSWERS What is the purpose of CSF?
They are non-fenestrated, meaning they have tight junctions that form a barrier. - CORRECT
ANSWERS What is distinguishable about brain capillaries?
Respiratory gases, substances of abuse, glucose, insulin, oxygen, amino acids (lipid-solubles or
those that have a specific transporter). - CORRECT ANSWERS What gets through the
BBB?
, INTRO TO NEUROSCIENCE EXAM 1 PRACTICE QUESTIONS AND
ANSWERS NEWEST UPDATED 2025 A COMPLETE SOLUTION
ALL ANSWERS CORRECT 100% DETAILED BEST GRADED A+ FOR
SUCCESS
Electrical to chemical to electrical ; foundation of synaptic transmission - CORRECT
ANSWERS What is the neuron signal conversion process? What is this the foundation of?
1) The presynaptic neuron sends an electrical signal from the axon hillock to the axon terminal.
2) At the synapse, the electrical signal gets converted to a chemical signal.
3) The postsynaptic neuron converts the chemical signal to an electrical signal. - CORRECT
ANSWERS What is the process of synaptic transmission?
This is the junction between two neurons where information is exchanged. - CORRECT
ANSWERS What is a synapse?
This surrounds the neuron (all cells) [it's a lipid bilayer]. It is composed of phospholipids and is
generally impermeable to charged molecules. The charged phosphate heads face the outside of
the cell. - CORRECT ANSWERS What is the plasma membrane and what is it composed
of?
This will not allow hydrated ions into the neuron. - CORRECT ANSWERS What is a
hydrophobic lipid membrane?
It contains ion channels proteins embedded in the membrane, which can be selective for
different ions and provide a path for ions to flow through the membrane. - CORRECT
ANSWERS Why is the plasma membrane semipermeable?
These are always open and set the resting membrane potential. - CORRECT ANSWERS
What are leak channels?
