00:01
Hi, in the first part of this question we need to find out the correct option regarding the experiment on the skeletal muscle, skeletal muscle bundle.
00:19
So, the all or none law, it is the principle that the strength by which a nerve or muscle fiber responds to a stimulus that is independent of the strength of the stimulus.
01:09
So, if the stimulus exceeds the threshold potential the nerve or the muscle fiber will give a complete response otherwise there is no response.
01:32
So, we can say the answer of this question is option b that is use standard settings as the contraction will be all or none.
02:00
Now, for the next part we need to find out the correct option regarding the rapid increase in the return of blood to the patient heart.
02:17
So, an increase in the preload results in increase in force of contraction by a stalling slope the heart.
02:35
So, this does not require a change in contractility, an increase in afterload will increase the contractility...