if you are provided with three slides, each containing one types muscles fibres, glass jar. explain why?
Answers
1. SKELETAL MUSCLES show alternate light and dark bands or striations when stained appropriately.
2. SMOOTH MUSCLES do not show bands and they are unstriated.
3. CARDIAC MUSCLES appear to be branched, cylindrical and uninucleate.
Answer:
To know which slide contains what type of muscle fibre, we have to first learn or know the characteristics of the muscle fibres.
There are three types of muscle fibres -
SMOOTH MUSCLES :
These muscle fibres are smooth in nature because they do not have any striations. They do not contain any dark and light bands occuring repeatedly.
SKELETAL MUSCLE :
These muscles have stripes in it. Unlike smooth muscles, in this skeletal muscle there occurs alternating dark and light bands occuring repeatedly.
CARDIAC MUSCLE :
These muscle fibres are branched. Cardiac muscle fibre has a very distinct characteristics from the two other muscle fibres that is they have intercalated disc present in them.
So, by observing all these caharctera on the slides through microscope, we can distinguish which slide contains what type of muscle fibres.