Starting with the Arrival of an Action Potential at the Neuromuscular

question 58

Multiple Choice

Starting with the arrival of an action potential at the neuromuscular junction,which is the correct order of events?

• A) Calcium is released from the sarcoplasmic reticulum,an action potential travels down the T tubule,depolarization spreads through the T tubule,and myosin binds actin.
• B) An action potential travels down the T tubule,depolarization spreads through the T tubule,calcium is released from the sarcoplasmic reticulum,and myosin binds actin.
• C) An action potential travels down the T tubule,depolarization spreads through the T tubule,calcium is taken up by the sarcoplasmic reticulum,and myosin binds actin.
• D) An action potential travels down the T tubule,depolarization spreads through the T tubule,ATP binds to myosin,and myosin binds actin.
• E) The T tubule is depolarized,calcium is released from the sarcoplasmic reticulum,an action potential is created in the muscle cell,and myosin binds actin.

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Definitions:

Fibrinogens

Plasma proteins that are converted into fibrin in the blood clotting process, playing a crucial role in wound healing.

Red Blood Cells

Cells in the blood responsible for carrying oxygen from the lungs to the body's tissues and carbon dioxide from the tissues back to the lungs.

Mitral Valve

A valve in the heart that lies between the left atrium and the left ventricle, controlling the flow of blood within the heart.

Bicuspid

Another term for the premolar tooth, which is located between the canine and molar teeth in the human mouth, or referring to a valve in the heart with two cusps.