Question 1
In an isotonic contraction, the muscle ________.
◦ changes in length and moves the "load"
◦ rapidly resynthesizes creatine phosphate and ATP
◦ never converts pyruvate to lactate
◦ does not change in length but increases tension
Question 2
Which of the following is the correct sequence of events for muscle contractions?
◦ muscle cell action potential, neurotransmitter release, ATP-driven power stroke, calcium ion release from SR, sliding of myofilaments
◦ neurotransmitter release, muscle cell action potential, motor neuron action potential, release of calcium ions from SR, sliding of myofilaments, ATP-driven power stroke
◦ neurotransmitter release, motor neuron action potential, muscle cell action potential, release of calcium ions from SR, ATP-driven power stroke
◦ motor neuron action potential, neurotransmitter release, muscle cell action potential, release of calcium ions from SR, ATP-driven power stroke, sliding of myofilaments
Parts of a muscle
Evolution of Stars Off the Main Sequence
Model of how direct repeats generated during the insertion of a transposon or an insertion sequence
Production of ATP in Skeletal Muscle
ATP Production in Cardiac Muscle
A comparison of the events in mitosis (left) and meiosis (right)