What occurs when acetylcholine (ACh) binds to the acetylchol…

What occurs when acetylcholine (ACh) binds to the acetylcholine receptors?    I: Na ions diffuse into the muscle cell    II: Na ions diffuse out of the muscle cell     III: The inside of the membrane becomes less negative (more positive)    IV: The inside of the membrane becomes more negative 

You are looking at an unlabeled microscope slide of muscle t…

You are looking at an unlabeled microscope slide of muscle tissue.  While looking at the slide under a microscope, you notice that the muscle cells are branched, striated, and contain intercalated discs.  Even though the slide is not labeled, you know that the slide must contain ____________________.

What is the correct order of events of excitation-contractio…

What is the correct order of events of excitation-contraction coupling?    I: action potential travels down into T tubules    II: the action potential travels along sarcolemma away from the neuromuscular junction    III: the action potential opens voltage-gated channels in the sarcoplasmic reticulum    IV: calcium is released into the cell around the myofilaments

Which of the following are functions of skeletal muscles?  …

Which of the following are functions of skeletal muscles?     I: producing movement to move the head and limbs     II: pumping blood throughout the body    III: moving food through the digestive tract    IV: maintaining posture and body position    V: generating heat