3. Which is correct about the cross bridge cycle?
A. (A) no energy consumption in the cycle
B. (B) ADP binding is essential for release of calcium ions
C. (C) ATP binding is essential for actin detachment
D. (D) calcium ions bind to thick filament
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2. Which ion is released from the sarcoplasmic reticulum during muscle contraction?
A. (A) sodium ion
B. (B) potassium ion
C. (C) calcium ion
D. (D) chloride ion
1. Which is the basic functional unit of muscle?
A. (A) bundle of muscle fibers
B. (B) myofibril
C. (C) sarcomere
D. (D) myosin and actin
Which is wrong about the internal model of movement?
A. (A) inverse model is related to predicted behavior
B. (B) inverse model is related to desired behavior
C. (C) forward model is related to predicted behavior
D. (D) output of the forward model is the same as input of the inverse model when inverse and forward models are accurate
3. Which is a potential treatment to improve walking ability after spinal cord injury in humans?
A. (A) repetitive weight-supported stepping on a treadmill
B. (B) irregular pattern stepping
C. (C) weight-supported irregular pattern stepping
D. (D) no way to improve
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