Muscle Contraction 101
Action Potential (AP) in the ____________________ (ORGAN) conducts from motor neurons to
skeletal muscle. Once the impulse reaches the muscle, ____________________ (ALSO FOUND IN
MILK) is released from the storage area ____________________ (2 WORDS). Transported by T-
tubules, calcium binds to ____________________ (REGULATORY PROTEIN) resulting in myosin
sites on actin becoming available. The globular heads on ____________________ (CONTRACTILE
PROTEIN) bind to actin with the energy of ____________________ (CURRENCY IN CELL). This
connection is called a ____________________ (GOLDEN GATE IS ONE). When the myosin heads
"disconnect" from actin and the distance from Z-line to Z-line decreases, it is called the
____________________ (FORCE x DISTANCE/TIME + STROKE). The act of how the muscle
contracts is known as the ____________________ ("THEORY").
3 conditions that must be present for muscle contraction to occur:
1)
2)
3)