The higher the frequency of action potentials, the higher amount of force produced in a muscle.   true or false

Describe the three steps (in detail) and the regions where these steps occur required for a skeletal muscle contraction to occur. Diagram(s) is (are) encouraged.

Myosin are motor proteins that drive forces and movement on actin filaments.   true false

Tropomyosin covers the active sites on actin until it is ready for myosin to bond for a muscle contraction.     True   False

T-tubules are invaginations of the sarcolemma of a muscle cell. True or False True False

Match the following regarding muscle contractions: The final chemical messenger and "trigger" for muscle contraction. It binds to troponin A neurotransmitter released at motor end plates by the axon terminals It diffuses across the cell membrane resulting in depolarization Activates synaptic vesicles in axon terminals to fuse with plasma membrane of axon terminal Used to convert ADP to ATP by transfer of a high-energy phosphate group. A reserve high-energy compound Breaks down ACh into its building blocks, rendering it ineffective [Choose] [Choose] [Choose] [Choose] [Choose] [Choose ]

Muscles relaxatiom occurs when acetylcholine is cleaved from its receptors ,calcium is pulled back into the sarcoplasmic recticulum,the myosin is released from its binding site ,and the muscle fiber returns to its resting lenght true or false

Skeletal muscle fibers regularly divide by mitosis. True False

Why does continuouns calcium release within a muscle fiber cause greater tension? Acticates more calcium pump  Activates myofibrils continuously  Increase action potential frequency  Lengthens sarcomere

The type of muscle contraction where the muscle contracts but exhibits no change in length is called