★ Anatomy - Muscle Histology/NMJ/Physiology Quiz
Which of these occurs first during a muscle contraction?
A. The nerve signal reaches the neuromuscular junction
B. Ach is released and opens Na ion channels
C. The sarcomere shortens
D. The myosin binds to the actin
Select your answer:
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Fitness › View
What type of exercise is this?
A. Jumping Jacks
B. Breathing
C. Tennis
D. Stretching
Medical Terminology › View
Where would you find a prefix in a medical word?
A. At the start
B. In the middle
C. At the end