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
Arrector pili muscle
The correct beginning position for the patient’s feet and crutches (tripod position).
The distribution of the sarcoplasmic reticulum and tubules around myofibrils of skeletal muscle.
Nerve meets muscle
Sequence Series Arithmatic Progression Problem
Human genome sequence explosion