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________________is a chemical neurotransmitter that is released from the neuron,  crosses the synaptic cleft (at the neuromuscular junction)  and binds to a specific receptor on the ___________

Name 2 muscles that are antagonists to each other,   that we studied: ___

Rigor mortis that occurs in skeletal muscles a few hours after death is due to: ______________

The protein, Myoglobin is ______ in color.

 Regarding levels of organization, the arrow is pointing to 1 myofibril which is at the level of:   ___________

Epimysium is a type of connective tissue that surrounds  _________

Which type of athlete would have more of the slow twitch fibers and leaner muscles? 

A muscle cell is also known as a muscle _________

Explain the origin vs the insertion of a muscle attachment: 

Name the protein within the thick myofilament______________