contraction of the skeletal muscle
Storyboard Text
- dendrites
- Dendrites
- Ach Neurotransmitter Ach Neurotransmitter Ach Neurotransmitter
- Neuromuscular Junction
- The impulse travels along the axon to the axon terminal
- Some new ach for my roof!
- Ach Neurotransmitter
- Nerve impulse
- Ach Neurotransmitter Ach Neurotransmitter Ach Neurotransmitter
- Now at the neuromuscular junction (synaptic cleft) (here the nervous and muscular systems meet
- The cell body receives a nerve impulse from dendrites
- Ach Neurotransmitter
- axon highway
- Impulse
- Cell body
- Nervous
- Ach, a common neurotransmitter, is released and binds to membrane of the muscle, the protective later
- Axon terminal
- Muscular
- Come on in Ca2+, feel free to bring your friends in too there's plenty of room
- When the level of Ca2+ ions is raised, actin and mysosin slide past each other, and the skeletal muscle fibers contract
- Mysosin: Don't mind me just coming by
- The cell membrane changes (depolarization) to allow Ca2+ ions to enter into the muscle fiber
- actin: Excuse me just sliding by
- When the level of Ca2+ ions decreases, or heads back outside the fiber, the skeleton muscle fibers relax
- Thanks for coming
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