What activity most requires a muscle fiber type with a lot of myoglobin? 40 meter sprint 100 meter spring 400 meter sprint one mile jog

Muscles relaxatiom occurs when acetylcholine is cleaved from its receptors ,calcium is pulled back into the sarcoplasmic recticulum,the myosin is released from its binding site ,and the muscle fiber returns to its resting lenght true or false

How many muscle fibers can be controlled by one motor neuron? Group of answer choices   6 All of above 2000 500

Which of the following statements is true? Muscles push on bones; they do not pull The end of the muscle attached to the bone that moves least is the origin The end of the muscle that attaches to the bone that moves the most is the antagonist The synergist is the the muscle that opposes the primary movement

Which is the correct order from smallest to largest?     Myofilament, Myocyte, Myofibril     Myocyte, Myofilament, Myofibril     Myocyte, Myofibril, Myofilament     Myofilament, Myofibril, Myocyte

In the process of muscle contraction, which of the following steps requires hydrolysis of ATP to complete?   movement of myosin head, pulling the thin filament   binding of myosin head to active site on actin   resetting of the myosin head back to its ready position   letting go of myosin head from the active site on actin   sliding of tropomyosin causing exposure of actin

Which of the muscle fiber types have the lowest amount of capillaries, mitochondria, and myoglobin, and are responsible for the most powerful athletic movements?  Type I  Type Ia  Type IIa  Type IIx

The type of muscle contraction where the muscle contracts but exhibits no change in length is called

Muscle contraction What makes the thick filament? What makes the thin filament?

A football player throwing the football is using more fast twitch muscle fibers.     True   False