Draw a relaxed and contracted sarcomere and label the parts of the Z-discs, thick and thin filaments. Label the figure.

Label the structure of the muscle fiber.

Station Name/recognize the muscle Provide: > 0: Origin I: Insertion A: Action innervation

Drag the correct label to the appropriate structure on the neuromuscular synapse. Neuromuscular junction Motor end plate Path of action potential Motor neuron Axon Myofibril Muscle fiber Re

Due to fiber alignment, the quadriceps muscle group is better at producing increased force, not velocity.     True   False

match to correct box

Station Name/recognize the muscle Provide: > 0: Origin I: Insertion 10 A: Action 11 Innervation 12 b) Poslerior view

During maximal contraction of a sarcomere the H band is still visible.

Place the following terms in the correct order 1-9 in the movement of actin filaments by myosin motors.   Hydrolysis of ATP Myosin releases ADP Myosin releases Pi Power stroke ATP binds to myosin Myosin weakly binds to actin Myosin tightly binds to actin Myosin releases actin Myosin head cocks

Define the structure of a sarcomere.