Please answer all questions

1		Muscle contraction requires a ready supply of ATP.
			A)	True
			B)	False
2		Muscles are covered with several layers of connective tissue called fascia.
			A)	True
			B)	False
3		Sarcomeres are the structural units of a myofibril.
			A)	True
			B)	False
4		The contractile elements of muscle fibers are called action potentials.
			A)	True
			B)	False
5		The region where a synaptic bulb lies in close proximity to the sarcolemma of a muscle fiber is called a neuromuscular junction.
			A)	True
			B)	False
6		Fast-twitch fibers tend to be aerobic.
			A)	True
			B)	False