Intro to Neuroscience Exam 1 Practice
Questions And Answers
This is the fluid contained in the ventricles. It is derived from the
choroid plexus, a specialized vascular tissue within ventricle walls -
correct answer ✅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 answer ✅What is the process for CSF secretion?
Extending down to the spinal cord. -
correct answer ✅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
,Intro to Neuroscience Exam 1 Practice
Questions And Answers
absorber/protective force. -
correct answer ✅What is the purpose of CSF?
They are non-fenestrated, meaning they have tight junctions that
form a barrier. -
correct answer ✅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 answer ✅What gets through the BBB?
Electrical to chemical to electrical ; foundation of synaptic
transmission -
correct answer ✅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.
, Intro to Neuroscience Exam 1 Practice
Questions And Answers
3) The postsynaptic neuron converts the chemical signal to an
electrical signal. -
correct answer ✅What is the process of synaptic transmission?
This is the junction between two neurons where information is
exchanged. -
correct answer ✅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 answer ✅What is the plasma membrane and what is it
composed of?
This will not allow hydrated ions into the neuron. -
correct answer ✅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 answer ✅Why is the plasma membrane semipermeable?
Questions And Answers
This is the fluid contained in the ventricles. It is derived from the
choroid plexus, a specialized vascular tissue within ventricle walls -
correct answer ✅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 answer ✅What is the process for CSF secretion?
Extending down to the spinal cord. -
correct answer ✅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
,Intro to Neuroscience Exam 1 Practice
Questions And Answers
absorber/protective force. -
correct answer ✅What is the purpose of CSF?
They are non-fenestrated, meaning they have tight junctions that
form a barrier. -
correct answer ✅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 answer ✅What gets through the BBB?
Electrical to chemical to electrical ; foundation of synaptic
transmission -
correct answer ✅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.
, Intro to Neuroscience Exam 1 Practice
Questions And Answers
3) The postsynaptic neuron converts the chemical signal to an
electrical signal. -
correct answer ✅What is the process of synaptic transmission?
This is the junction between two neurons where information is
exchanged. -
correct answer ✅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 answer ✅What is the plasma membrane and what is it
composed of?
This will not allow hydrated ions into the neuron. -
correct answer ✅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 answer ✅Why is the plasma membrane semipermeable?
