multiunit smooth muscle
which muscle type has only one nucleus, no sarcomeres, and rare gap junctions?
Duchenne muscular dystrophy is caused by a mutation in the dystrophin _____. Without a normal copy of DNA for transcription, there can never be a normal protein translated.
during the "rest & recovery" stage, when oxygen is available, lactic acid is converted back to _______ acid.
white fast twitch fibers
Which type of muscle fiber has a large quantity of glycogen and mainly uses glycolysis to synthesize ATP?
What special feature of smooth muscle allows it to stretch without immediately resulting in a strong contraction?
chemically gated Na+-K+ channels
Acetylcholine receptors are best characterized as what type of channel?
the difference between the amount of oxygen needed for totally aerobic muscle activity and the amount actually used
What does excess postexercise oxygen consumption represent?
electrical; chemical; electrical
generating and AP on the muscle membrane involves the transfer of info from an _________ signal (down the neuron), to a ________ signal (at the NMJ), back to an ________ signal (depolarization of the sarcolemma).
TRUE or FALSE: high precision muscles (voice box, eye, fingers) have fewer muscle fibers per neuron.
TRUE or FALSE: when a single motor unit is recruited to contract, all the muscle fibers in that motor unit must all contract at the same time.
a _______ is recorded when a stimulus that results in contraction (force) of a single muscle fiber is measured over a very brief millisecond time frame.
the example of dr. foster trying to lift the podium is an example of a ________ contraction.
1.) stored glycogen 2.) blood glucose 3.) pyruvic acid 4.) fatty acids
list the fuels of the aerobic pathway and in what order they are used.
TRUE or FALSE: muscle glycogen is only for muscle. It can't be taken from muscle when you're starving.
the physiological inability to contract can be caused by _____ imbalances and damages to the _____.