What process requires ATP? Release the calcium from the terminal cisternae Binding of acetylcholine receptors  Transport of Calcium by voltage-gated calcium channels. Release of myosin head from actin filaments  Break down of acetylcholine by acetylcholinesterase

During sarcomere shortening myosin gets shorter actin gets shorter A-band gets shorter • H-zone gets shorter more than one of the above is correct

Which of the following are correct regarding processes that are involved in the Latent period of a muscle twitch? (choose all that apply) Acetylcholine binds to nicotinic receptors on the motor-end-plate Myosin binds with Actin forming the "cross-bridge" Power-Stroke Cycling is occurring Action potential travels down T-Tubules O Calcium is released from Terminal Cisternae and binds to Troponin

If acetylcholine re-uptake is blocked in the synaptic cleft, then what happens in the muscle cell? The cell won't be able to contract. Tetanus. Calcium levels in the sarcoplasmic reticulum go up. Calcium levels in the sarcoplasm go down.

The cross bridge cycle can generate tension in skeletal muscle cells during sarcomere elongation sarcomere shortening no change in sarcomere length all of the above