W ith each step during a marathon, a coordinated effort is taking place between your brain and the muscles in your body.
Place the following steps in order to describe this process for muscle contraction.
Drag the text blocks below into their
correct order.
- ATP is used to allow actin to slide past myosin, resulting in a shortening of the cell as muscle contraction occurs.
- Motor neurons carry the signal for contraction from the brain to the cells that make up each muscle.
- Neurotransmitters cross the synapse and bind to receptors on the muscle cell membrane.
- An electrical wave is triggered in the muscle cell, which triggers the release of calcium ions from the endoplasmic reticulum.
- Motor messages originate in the frontal lobe of the cerebrum and travel to the cerebellum to be refined and coordinated.
- The electrical wave causes neurotransmitters to be released into the synapse between the motor neuron and the muscle cell.