If voltage-dependent potassium (K+) channels opened at -65 mV in the giant axon of the squid -- HYPOTHETICALLY -- and all other factors (e.g., charge & concentration gradients) were "normal", which of the following would occur? O A. The concentration gradient of K+ would "urge" K+ to leave the cell. OB. The charge gradient of K+ would "urge" K+ to leave the cell. C. The concentration gradient of K+ would "urge" K+ to enter the cell. OD. The charge gradient of K+ would "urge" K+ to enter the cell. O E. A &B OF. A &D O G.B &C O H.C &D

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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QUESTION 17
If voltage-dependent potassium (K+) channels opened at -65 mV in the giant axon of the squid -- HYPOTHETICALLY -- and all other factors (e.g., charge & concentration
gradients) were "normal", which of the following would occur?
O A. The concentration gradient of K+ would "urge" K+ to leave the cell.
O B. The charge gradient of K+ would "urge" K+ to leave the cell.
C. The concentration gradient of K+ would "urge" K+ to enter the cell.
OD. The charge gradient of K+ would "urge" K+ to enter the cell.
O E. A & B
OF. A & D
O G.B & C
O H.C & D
Transcribed Image Text:QUESTION 17 If voltage-dependent potassium (K+) channels opened at -65 mV in the giant axon of the squid -- HYPOTHETICALLY -- and all other factors (e.g., charge & concentration gradients) were "normal", which of the following would occur? O A. The concentration gradient of K+ would "urge" K+ to leave the cell. O B. The charge gradient of K+ would "urge" K+ to leave the cell. C. The concentration gradient of K+ would "urge" K+ to enter the cell. OD. The charge gradient of K+ would "urge" K+ to enter the cell. O E. A & B OF. A & D O G.B & C O H.C & D
QUESTION 18
In Parkinson's disease, there is a deficiency of dopamine released into the
O A. midbrain substantia nigra
O B. forebrain striatum
O C. forebrain substantia nigra
D. hindbrain striatum
E. hindbrain substantia nigra
F. midbrain striatum
Transcribed Image Text:QUESTION 18 In Parkinson's disease, there is a deficiency of dopamine released into the O A. midbrain substantia nigra O B. forebrain striatum O C. forebrain substantia nigra D. hindbrain striatum E. hindbrain substantia nigra F. midbrain striatum
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