Muscle Contraction Research Paper

Picking up a box from the floor and placing it on a shelf

Light entering the eye forms an upside-down image on the retina. The retina transforms the light into nerve signals for the brain. The brain then turns the image right-side up and tells us what we are seeing. Our brain then computes to pick up the box. When a message comes into the brain from anywhere in the body, the brain tells the body how to react. the brain as a central computer that controls all bodily functions, then the nervous system is like a network that relays messages back and forth from the brain to different parts of the body. It does this through the spinal cord, which runs from the brain down through the back and contains nerves that branch out to every organ
This calcium is then used to initiate contraction, given the affinity of troponin to calcium. As troponin attaches to calcium, it produces a movement of the tropomyosin molecule that frees up the actin site so that the charged cross-bridge can contact the site resulting in the liberation of energy from the adenosine triphosphate (ATP) molecule. Nerve impulses are sent from the motor cortex of the brain through the spinal cord. The musculocutaneous nerve continues the wave of axon depolarization to individual muscle fibers via motor units. Each motor unit has so many number of motor nerves that extend to individual muscle fibers by way of a neuromuscular junction called the synapse. When the motor nerve is depolarized, acetylcholine is released from the axon terminals at the neuromuscular junction. . The acetylcholine binds to the receptor sites on the motor end plate membrane. The neurotransmitter, acetylcholine, increases the motor end plate’s permeability to sodium and potassium ions, which produces an end-plate potential. This potential depolarizes the sarcolemma that creates a muscle action potential that is propagated throughout the muscle membrane causing depolarization of the transverse