Practical 2: Lab 6: mechanisms of muscle contraction exam 2024

Practical 2: Lab 6: mechanisms of muscle contraction exam 2024 muscle twitch -Answer-a single AP coming from a motor neuron activity in the spinal cord will produce a single contraction in the muscle fibers of its motor unit three phases of a twitch -Answer-latent period contraction phase relaxation phase latent period -Answer-AP is being propagated along sarcolemma and Ca++ released from SR excitation/contraction coupling True or false tension in skeletal muscle is affected by frequency of APs -Answer-true true or false tension in skeletal muscle is affected by the number of motor neurons transmitting APs - Answer-true true or false if the fibers are stimulated while a previous twitch is still occurring, the second twitch will be stronger -Answer-true summation - successive motor neuron signaling is summed, resulting in greater contraction of the motor unit