BMS1 Nervous System Transmission review
questions with answers
Save Groups
1-What is the electrical 1-40-100mv
potential difference across 2-differences in the ion concentrations across the
a cells plasma membrane? membrane
2-What is this voltage 3-excitable and nonexcitable cells
gradient caused by?
3-Where is this membrane
potential present?
The state in which there is no electrochemical
What is electrochemical
potential difference for the solute between the two
equilibrium?
compartments
- electrical potential + chemical potential
What is electrochemical
- membrane potential that prevents ions from moving
potential? (2)
completely down their concentration gradients
1-What is a cells 1 weighted avg of equilibrium potentials
membrane potential? (2) electrical difference btwn inside & outside of the cell
2-What is membrane (mV)
potential produced by? 2 separation of charges across cell membrane
Normally..... 1-out of
1-K+ flows_______ the cell 2-into
2-Na+ flow _______ the cell 3-into
3-Water moves ______ the
cell, down its
concentration gradient
, ** Test Question** 1-Na+/K+ pump
1-How do cells maintain 2-No
osmotic equilibrium?
2-Do cells truly reach
chemical and electrical
equilibrium?
Transmembrane proteins ion selective
that from an aqueous
pore:
1- Voltage gated channels: open/close w/ changes in
What are the 2 types of
membrane potential
ion channels and how do
2- Ligand-gated channels: open/close w/ binding of
they operate? (2)
hormones or neurotransmitters
1-What are the names of 1- M-gate: extracellular & H-gate:intracellular
the gates in the Na+ 2- both must be open
Channel and their 3- tetrodotoxin & lidocaine
locations? (2)
2- Do the gates need to
be open or closed for Na+
to pass through?
3-What blocks these
gates?
1-What is the name of the 1-N-gate
gate in the K+ channel? 2-Extracellular side
2-Where is the gate 3-Open
located?
3-In order for K+ to pass,
the gate must be ______
What is an action Transient change in membrane potential of
potential? electrically excitable cells (eg. Nerve)
questions with answers
Save Groups
1-What is the electrical 1-40-100mv
potential difference across 2-differences in the ion concentrations across the
a cells plasma membrane? membrane
2-What is this voltage 3-excitable and nonexcitable cells
gradient caused by?
3-Where is this membrane
potential present?
The state in which there is no electrochemical
What is electrochemical
potential difference for the solute between the two
equilibrium?
compartments
- electrical potential + chemical potential
What is electrochemical
- membrane potential that prevents ions from moving
potential? (2)
completely down their concentration gradients
1-What is a cells 1 weighted avg of equilibrium potentials
membrane potential? (2) electrical difference btwn inside & outside of the cell
2-What is membrane (mV)
potential produced by? 2 separation of charges across cell membrane
Normally..... 1-out of
1-K+ flows_______ the cell 2-into
2-Na+ flow _______ the cell 3-into
3-Water moves ______ the
cell, down its
concentration gradient
, ** Test Question** 1-Na+/K+ pump
1-How do cells maintain 2-No
osmotic equilibrium?
2-Do cells truly reach
chemical and electrical
equilibrium?
Transmembrane proteins ion selective
that from an aqueous
pore:
1- Voltage gated channels: open/close w/ changes in
What are the 2 types of
membrane potential
ion channels and how do
2- Ligand-gated channels: open/close w/ binding of
they operate? (2)
hormones or neurotransmitters
1-What are the names of 1- M-gate: extracellular & H-gate:intracellular
the gates in the Na+ 2- both must be open
Channel and their 3- tetrodotoxin & lidocaine
locations? (2)
2- Do the gates need to
be open or closed for Na+
to pass through?
3-What blocks these
gates?
1-What is the name of the 1-N-gate
gate in the K+ channel? 2-Extracellular side
2-Where is the gate 3-Open
located?
3-In order for K+ to pass,
the gate must be ______
What is an action Transient change in membrane potential of
potential? electrically excitable cells (eg. Nerve)
