Muscle Contractions 1
a synaptic connection between the terminal end of a motor nerve and a muscle.
Neuromuscular Junction
The process used by muscles to contract. Repetitive cycles of actin and myosin sliding over each other, contracting the sarcomere and generating tension in the muscle.
The Sliding Filament Model
This neurotransmitter is released from motor neurons to initiate an actional potential and subsequently contraction in muscle cells.
Acetycholine (ACh)
Myosin binding sites are exposed after calcium binds this protein.
Troponin
https://youtube.com/shorts/RvXb0CdtkLs?si=zw4T3mDCBa9If1ee
A) what type of muscles are involved?
B) and what type of control is involved (voluntary or involuntary)?
Skeletal Muscles, Voluntary Control
To terminate the signaling or communication between a motor neuron and a skeletal muscle fiber, this enzyme breaks down acetylcholine in the post-synaptic neuromuscular junction.
acetylcholinesterase
Calcium required for muscle contraction is released from this organelle.
The Sarcoplasmic Reticulum
These fatigue-resistant muscle fibers are darker because they have more blood in them and are geared for sustained smaller movements and postural control.
Slow-twitch muscle fibers
The attachment of this molecule to the myosin head causes the cross bridge to detach.
ATP
The step at which muscular force is produced due to the movement of myosin towards the M line, pulling actin along with it.
The Power Stroke