Thursday, April 20, 2017

The Muscular Tissue

This  tissue provide shape and size of organs and provide motion in body. It is of three types-
Striated      
Unstriated 
Cardiac 
Stiriated Muscles- These are voluntary muscles having light and dark      striations. The cells are long, cylindrical and are multinucleated.   They are also called skeletal muscles because they are attached to      bones. They help in voluntary   movements of the body. These muscles feel tiredness.
Unstriated Muscles- These are involuntary muscles  without  striations. The cells are long and spindle shaped and are uni-nucleated. They are present in alimentary canal, blood vessels,   bronchi of lungs, iris of eye etc. They help in involuntary     movements.These muscles do not feel tiredness.
Cardiac Muscles- These are involuntary muscles  having faint striations.    The cells are long, cylindrical, branched and multinucleated. They  are present in the heart and helps in the contraction and relaxation of the heart. These muscles work through out life of individual.