CBNS 120 MIDTERM 1 QUESTIONS WITH VERIFIED
ANSWERS
Correct 45
Incorrect 00
1 of 45
Term
In the squid axon experiments, the early inward current can be isolated
by:
a.) Treatment with TTX
b.) Treatment with alpha-bungarotoxin
c.) Treatment with TEA
d.) Stepping to the Na equilibrium potential
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c.) The Na channel inactivation
c.) Treatment with TEA
particle
c.) The SERCA pump C.) Slows inactivation
, Don't know?
2 of 45
Term
The following are specific blockers of the Na/K Pump: (Choose all that
are correct)
a.) tetrodotoxin
b.) ouabain
c.) alpha-bungarotoxin
d.) digoxin
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b; c; d b;d
E. (B) and (C) only b; d
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3 of 45
Term
Na current during the action potential decreases due to:
,a.) decreased driving force
b.) increased driving force
c.) inactivation
d.) All of the above
e.) A and C only
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E.) A and B only e.) A and C only
E.) B and C E.) B and C only
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4 of 45
Term
Myocardial cells have long duration action potentials because of:
a.) gNa
b.) gK
c.) gCa
d.) gCl
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E.) B and C c.) gCa
, b;c;d;a rectification
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5 of 45
Definition
ions
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Permeability is the ability of the Cajal used the [_____ ] stain to prove
membrane to conduct _____ _ . the [ _____ ] Doctrine.
Permeability indicates the presence
Categories of ion channels include
of ____ , while conductance requires
________, _________, and ______ _.
_______ and ____ _.
Don't know?
6 of 45
Term
Secondary transporters derive their energy from:
A. ATP
ANSWERS
Correct 45
Incorrect 00
1 of 45
Term
In the squid axon experiments, the early inward current can be isolated
by:
a.) Treatment with TTX
b.) Treatment with alpha-bungarotoxin
c.) Treatment with TEA
d.) Stepping to the Na equilibrium potential
Give this one a try later!
c.) The Na channel inactivation
c.) Treatment with TEA
particle
c.) The SERCA pump C.) Slows inactivation
, Don't know?
2 of 45
Term
The following are specific blockers of the Na/K Pump: (Choose all that
are correct)
a.) tetrodotoxin
b.) ouabain
c.) alpha-bungarotoxin
d.) digoxin
Give this one a try later!
b; c; d b;d
E. (B) and (C) only b; d
Don't know?
3 of 45
Term
Na current during the action potential decreases due to:
,a.) decreased driving force
b.) increased driving force
c.) inactivation
d.) All of the above
e.) A and C only
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E.) A and B only e.) A and C only
E.) B and C E.) B and C only
Don't know?
4 of 45
Term
Myocardial cells have long duration action potentials because of:
a.) gNa
b.) gK
c.) gCa
d.) gCl
Give this one a try later!
E.) B and C c.) gCa
, b;c;d;a rectification
Don't know?
5 of 45
Definition
ions
Give this one a try later!
Permeability is the ability of the Cajal used the [_____ ] stain to prove
membrane to conduct _____ _ . the [ _____ ] Doctrine.
Permeability indicates the presence
Categories of ion channels include
of ____ , while conductance requires
________, _________, and ______ _.
_______ and ____ _.
Don't know?
6 of 45
Term
Secondary transporters derive their energy from:
A. ATP
