What is sarcolemma?
the sheath that surrounds muscle fibre
Name 2 mylofilements found in the muscle fibres and briefly outline their function.
actin and myosin
why does the skeletal muscle apper striated or striped?
thin actin filaments and thick myosin filements overlap and produce a striped appearance
Why is ATP needed for muscle contraction?
to provide energy
Why is creatine phosphate needed for muscle contration?
it insures atp supplies remain high by supplying a phosphate to ADP
Define muscle tetanus
the state of constant muscle contraction due to repeated muscle stimulation
question 7 figure 9 page 304
Athlete A is a Sprinter and B is a long distance runner
a graph on page 309 # 17
fetal hemoglobin, fetus secures oxygen from the mothers blood.
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