Presynaptic Cleft
Another name for presynaptic
What is axon
Another name for synapse
What is the space in between
Another name for postsynaptic
What is cell membrane
The increase of sodium causes the cell to become more positive
What is depolarization
The zone disappears when contracted
What is H zone
This is the neurotransmitter that is temporarily held inside vesicles
What is acetylcholine (ACh)
The overall charge of this space compared to the postsynaptic cleft
What is positive
The overall charge of this space compared to the synaptic cleft
What is negative
The point that the electrical impulse has to reach to produce a muscle contraction
What is threshold
The two types are concentric and eccentric
What is isotonic
This is sent down to excite and open voltage-gated channels
What is action potential
The ion that is more abundant in this space
What is sodium
The pump that returns the cell to its resting membrane potential
Sodium-potassium pump
The efflux of potassium causes the cell to become more negative
What is repolarization
Required for connection of myosin heads to attachment sites, sodium/potassium pump, and calcium pump in sarcoplasmic reticulum
What is ATP
This ion travels through the voltage-gated channels and binds to the vesicles inside
What is calcium (Ca 2+)
Allows sodium to flood into the postsynaptic cleft
What is the binding of acetylcholine to ligand-gated channels
The ion that is more abundant in this space
What is potassium
The only chemical messenger that can travel through the synapse
What is acetylcholine
Naturally blocks the attachment site for myosin heads
What is tropomyosin
The process (name this process) of the neurotransmitter being released from the presynaptic cleft into the synapse
The more of this component, the stronger the muscle contraction
What is calcium or acetylcholine
This channel closes after the threshold is met
What is sodium channel
The vesicles bind to the postsynaptic cleft to release ACh after this action happens
What is the binding of calcium to the vesicles
What is troponin