00:01
In this question, we are going to see the steps which is involved in the skeletal muscle excitation.
00:09
Skeletal muscle excitation and contraction and contraction.
00:17
So, first of all, first of all, we have that sodium, it will rushes into the muscle fiber, it rushes into the muscle fiber causing the local depolarization and the end plate typical that is the type of the potential gradient.
00:35
Second, we have is the motor neuron action potential, motor neuron action potential, it travels down the axon which is stimulating the ach release from the terminals.
00:55
Now, third we have is that ach, it diffuses, it diffuses across the synapses and binds to the ligand gated receptors at the muscle end plate.
01:08
Next, we have is that there is the activation of l -type voltage gated calcium channels, voltage gated calcium channels and now next is that the calcium, it diffuses out of the sarcoplasmic reticulum, sarcoplasmic reticulum raising the concentration in the sarcoplasm at the end of the excitement state.
01:43
Next, is that calcium, it binds the proponin, it binds the proponin on the sarcomeres of myofibril.
02:02
Now, next is that propomyosin, propomyosin, it slides out of position of myobysin sites on the actin...