elatively large intracellular space between which causes an interruption in the connec yanodine calcium channel. Based on this which of the following problems would you O An action potential would not be able to be O Re-uptake of calcium would be blocked, lead O The actin binding sites may continue to be bl the sarcolemma. O All of the above.

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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Researchers are working to understand a rare disease that affects the ability of the muscles to
contract. They have identified that the disease is caused by abnormal gene expression leading to a
relatively large intracellular space between the T-tubules and the terminal cisternae in the triad,
which causes an interruption in the connection between the dihydropyridine (DHP) receptor and the
ryanodine calcium channel. Based on this description of the morphology underlying the disease,
which of the following problems would you expect in excitation-contraction coupling?
An action potential would not be able to be transmitted down the T-tubule.
Re-uptake of calcium would be blocked, leading to an increase in intracellular calcium.
O The actin binding sites may continue to be blocked by tropomyosin even following an action potential along
the sarcolemma.
O All of the above.
Only B and C.
Transcribed Image Text:Researchers are working to understand a rare disease that affects the ability of the muscles to contract. They have identified that the disease is caused by abnormal gene expression leading to a relatively large intracellular space between the T-tubules and the terminal cisternae in the triad, which causes an interruption in the connection between the dihydropyridine (DHP) receptor and the ryanodine calcium channel. Based on this description of the morphology underlying the disease, which of the following problems would you expect in excitation-contraction coupling? An action potential would not be able to be transmitted down the T-tubule. Re-uptake of calcium would be blocked, leading to an increase in intracellular calcium. O The actin binding sites may continue to be blocked by tropomyosin even following an action potential along the sarcolemma. O All of the above. Only B and C.
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