Question 2: lon channels are the key to cell signaling in the body. The voltage gated calcium channels discussed in question one are a part of that. These systems are in delicate balance, keeping ion concentrations around the cell at a specific level so that an electrical signal can travel, in this case, down a skeletal muscle, and cause a contraction. Both hypokalemic (too few ions) periodic paralysis and hyperkalemic (too many ions) periodic paralysis are caused by mutations to the CACNA1S gene. If a mutation created a hyperkalemic periodic paralysis phenotype, that mutation could be characterized as for the CACNA1s gene A. Gain of Function B. Loss of Function C. Null D. Silent If a mutation created a hypokalemic periodic paralysis phenotype, that mutation could be characterized as for the CACNA1s gene A. Gain of Function B. Loss of Function C. Null D. Silent

Question 2: lon channels are the key to cell signaling in the body. The voltage gated calcium channels discussed in question one are a part of that. These systems are in delicate balance, keeping ion concentrations around the cell at a specific level so that an electrical signal can travel, in this case, down a skeletal muscle, and cause a contraction. Both hypokalemic (too few ions) periodic paralysis and hyperkalemic (too many ions) periodic paralysis are caused by mutations to the CACNA1S gene. If a mutation created a hyperkalemic periodic paralysis phenotype, that mutation could be characterized as for the CACNA1s gene A. Gain of Function B. Loss of Function C. Null D. Silent If a mutation created a hypokalemic periodic paralysis phenotype, that mutation could be characterized as for the CACNA1s gene A. Gain of Function B. Loss of Function C. Null D. Silent

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 in image, thanks so much! :D
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Conditions: [Na+] outside = .3 mM [Na+] inside the presynaptic cell = .01 mM [dopamine] inside = .5 mM [dopamine] outside = .001 mM ΔGinward = RT ln [X] inside/[X] outside + z F Vm F = 23,000 cal/mol V R = 1.987 cal/ mol K Membrane potential is .07 V Temperature is 273 K Using the information above and image please answer these questions : Is the concentration of sodium higher on the outside or the inside of the presynaptic cell? Would the movement of sodium be active or passive moving OUT of the presynaptic cell? SHOW your work.
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Set Glutamic Acid to 60 (As seen in the picture) What does glutamic acid do to the membrane potentials of: Neurons - Muscles -
What is the intracellular voltage for Cl- if the intracellular concentration was 5 mM and the extracellular concentration was 130 mM. Write the voltage as a number in mV inside the cell relative to that outside, eg. -72 or + 90. Question 2. What is the intracellular voltage for Ca++ if the intracellular concentration was 0.0008 mM and the extracellular concentration was 0.6 mM. Write the voltage as a number in mV inside the cell relative to that outside, eg. -72 or +90. Round to the nearest milli Volt.
Question in Image, thank you!
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