Sliding Filament Quiz Flashcards
Myosin
Thick Filaments that contain ATPase, which split ATP to generate contraction
Actin
Thin Filament anchored to the Z line
Polarization
state of the resting muscle
Ach
The neurotransmitter that is released at the neuromuscular junction
Na+
Ions that rush into the muscle cell
Initiation of depolarization since there is no longer a positive charge
Depolarization
Generates an electrical current Action potential
The signal sweeps across
The Sarcolema
While this signal is transmitted across the muscle fibers, ACh is broken down by sarcolemma enzymes. This prevents continued:
Contraction
Released from the Sarcoplasmic Reticulum
Ca+
Seeks for acting Sites
Myosin
Myosin Seeking for acting Sites that cause the muscle to
Shorten and contract
Ions diffuse out of the cell
K+
Activiated to return Na+ & K+ to orignal position
Sodium-Potassium Pump
Relaxed Muscle: The ions are
Na+ outside , K+ inside cell = Polarization
What makes all this possible
ATP energy