Question

Excitation-Contraction Coupling: During the action potential in a cardiac contractile cell: a) Calcium ions enter the cell through voltage-gated calcium channels and bind to Ryanodine receptor-channels. b) Calcium ions enter the sarcoplasm through Ryanodine receptor-channels and bind to troponin. c) Calcium is pumped out of the cell into the ECF by primary active transport. d) Both a) and b) are correct, and c) is incorrect. e) a), b), and c) are all correct.

Name: excitation contraction coupling during the action potential in a cardiac contractile cell a calcium ions enter the cell through voltage gated calcium channels and bind to ryanodine receptor 43363
Uploaded: 2024-06-23T16:37:08-08:00
Duration: 1 min 11 s
Channel: Adi S
Description: excitation contraction coupling during the action potential in a cardiac contractile cell a calcium ions enter the cell through voltage gated calcium channels and bind to ryanodine receptor 43363

          Excitation-Contraction Coupling: During the action potential in a cardiac contractile cell:
a) Calcium ions enter the cell through voltage-gated calcium channels and bind to Ryanodine receptor-channels.
b) Calcium ions enter the sarcoplasm through Ryanodine receptor-channels and bind to troponin.
c) Calcium is pumped out of the cell into the ECF by primary active transport.
d) Both a) and b) are correct, and c) is incorrect.
e) a), b), and c) are all correct.

Added by Michelle R.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Adi S

06/23/2024

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This process involves the sequence of events that link the electrical excitation of the cell to its contraction. Show more…

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Excitation-Contraction Coupling: During the action potential in a cardiac contractile cell: a) Calcium ions enter the cell through voltage-gated calcium channels and bind to Ryanodine receptor-channels. b) Calcium ions enter the sarcoplasm through Ryanodine receptor-channels and bind to troponin. c) Calcium is pumped out of the cell into the ECF by primary active transport. d) Both a) and b) are correct, and c) is incorrect. e) a), b), and c) are all correct.