Muscles

Question 1

simple twitch

Answer 1

all or nothing response that muscles exhibit

Question 2

frequency summation

Answer 2

multiple simple twitches before the muscle has an opportunity to full relax

Question 3

simple twitches that occur so frequently as to not let the muscle relax at all can lead to

Answer 3

tetanus, a more prolonged and stronger contraction

Question 4

muscle cells have additional energy receivers to reduce

Answer 4

oxygen dept (the difference between the amount of oxygen needed and the amount present) and forestall fatigue

Question 5

creatine phosphate

Answer 5

can transfer a phosphate group to ADP, forming ATP

Question 6

Myoglobin

Answer 6

a heme containing protein that is a muscular oxygen reserve

binds to oxygen with high affinity

Question 7

fast twitch (white) muscle fibers

Answer 7

have fewer mitochondria and must rely on glycolysis and fermentation to make ATP under most circumstances.