what is a motor unit?
motor neurons that activate the muscle fibers
what happens in every single contraction
ACh is dumped onto the muscle, delay for sodium to go into the muscle, calcium levels go up, calcium levels go down, pumps out calcium and sodium
what is tetanus?
a normal activity of the muscle where it reaches its climax in activation
types of twitch fibers
slow and fast twitch
characteristics of fast twitch fibers
poor blood supply
more glycolytic enzymes
slow twitch fibers
good blood supply
which twitch fibers are chicken legs?
mostly slow twitch fibers
what fibers are chicken breast?
mostly fast twitch
birds that fly breasts?
endurance training does what?
increases number of blood vessels in muscle
increase size of heart