Stretching a myocardial cell
A) only decreases the force of a contraction.
B) only allows more Ca²⁺ to enter.
C) only increases the force of contraction.
D) decreases the force of a contraction and allows more Ca²⁺ to enter.
E) allows more Ca²⁺ to enter and increases the force of a contraction.
Correct Answer:
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Q17: Which valves have chordae tendineae?
A) aortic and
Q18: Capillaries are best described as
A) microscopic vessels
Q19: In the 16th century, William Harvey discovered
Q20: As blood vessel length increases,
A) resistance increases
Q21: The depolarization of the pacemaker action potential
Q23: The action potential in a cardiac contractile
Q24: The rapid depolarization phase of the action
Q25: The medical term for heart attack is
A)
Q26: Autorhythmic cells
A) are also called pacemakers because
Q27: The end of the plateau phase is
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