NEUROSCIENCE EXAM SET
QUESTION AND ANSWERS
In the mammalian neurons, which of the following sets of approximate ionic
concentrations (in mM) is correct? - Answer-Outside: Na+ [150], K + [3.5], Ca2+ [2.5]
Astrocyte resting membrane potential is mostly dependent on the conductances of
these ions: - Answer-Potassium
Identify correct statement about Nernst and Goldmann equations? - Answer-Nernst
equation takes into consideration only the absolute but not the relative ionic
permeabilities.
Pick the correct statement about the action potential dynamics - Answer-Voltage
gated potassium channels contain two gates: activation and inactivation
Axon initial segments - Answer-express high levels of sodium potassium and
acetycholine receptor channels
Fugu is another name for mahi-mahi that is good eats, but has prominent traces of: -
Answer-None
When considering electrochemical gradients, which of the following ions is subject to
the greatest driving force at Vm = -90 mV - Answer-Sodium
Which statement correctly describes ions passing through selective ion channel? -
Answer-Ions are surrounded by waters of hydration
Molecular regions P comprise the innermost region of the channel pore.
Local anesthetic lidocaine is a: - Answer-Sodium channel antagonist
Axon initial segment contains precise organization of sodium channels responsible
for generating two types of action potential. Pick the most correct association. -
Answer-
Ancient Greeks, lead by Hippocrates thought that the brain is a major controlling
organ of the body. - Answer-T
Nissl stain can distinguish glia from neurons. - Answer-T
Blood-brain barrier is open and allows all blood-borne materials into the brain. -
Answer-F
Single sensory neuron axon diverges and can activate many motor neurons and
interneurons. - Answer-T
In neurons, protein transcription takes place in the cytoplasm. - Answer-F
QUESTION AND ANSWERS
In the mammalian neurons, which of the following sets of approximate ionic
concentrations (in mM) is correct? - Answer-Outside: Na+ [150], K + [3.5], Ca2+ [2.5]
Astrocyte resting membrane potential is mostly dependent on the conductances of
these ions: - Answer-Potassium
Identify correct statement about Nernst and Goldmann equations? - Answer-Nernst
equation takes into consideration only the absolute but not the relative ionic
permeabilities.
Pick the correct statement about the action potential dynamics - Answer-Voltage
gated potassium channels contain two gates: activation and inactivation
Axon initial segments - Answer-express high levels of sodium potassium and
acetycholine receptor channels
Fugu is another name for mahi-mahi that is good eats, but has prominent traces of: -
Answer-None
When considering electrochemical gradients, which of the following ions is subject to
the greatest driving force at Vm = -90 mV - Answer-Sodium
Which statement correctly describes ions passing through selective ion channel? -
Answer-Ions are surrounded by waters of hydration
Molecular regions P comprise the innermost region of the channel pore.
Local anesthetic lidocaine is a: - Answer-Sodium channel antagonist
Axon initial segment contains precise organization of sodium channels responsible
for generating two types of action potential. Pick the most correct association. -
Answer-
Ancient Greeks, lead by Hippocrates thought that the brain is a major controlling
organ of the body. - Answer-T
Nissl stain can distinguish glia from neurons. - Answer-T
Blood-brain barrier is open and allows all blood-borne materials into the brain. -
Answer-F
Single sensory neuron axon diverges and can activate many motor neurons and
interneurons. - Answer-T
In neurons, protein transcription takes place in the cytoplasm. - Answer-F
