The binding of neurotransmitter to receptors on a vertebrate muscle cell causes:
A) an influx of sodium ions, causing a spike in depolarization.
B) an influx of potassium ions.
C) an efflux of sodium ions.
D) a graded depolarization of the muscle cell.
Correct Answer:
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Q18: Striated muscles appear striated or banded under
Q19: Which of the following is a muscle
Q20: The sliding filament model of muscle contraction
Q21: What is a muscle fiber?
A)a single cell
Q22: What is the basic contracting unit of
Q24: Striated muscles include:
A)skeletal muscles.
B)cardiac muscles.
C)smooth muscles.
D)skeletal muscles
Q25: You measure levels of Ca2+ in various
Q26: The hormone oxytocin stimulates contraction of:
A)the smooth
Q27: Which of the following curves in the
Q28: If a skeletal muscle is no longer
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