Question

1) why is the tendons healing process slow, and why could it be said that tendon injuries never fully recover?

1a) Now Describe the nature of growth and replacement of skin epidermis. and What are the similarities and differences between formation of the epidermis and secondary growth in plants?

1b) The total average length of seminiferous tubules in each human testis is 540 m. Calculate the total volume of tissue (in milliliters) devoted to spermatogenesis in a human male show all steps. ( area not given in problem )

Answer 1

Tendons is made up of fibrous connective tissue which connects bone to muscle and it helps in the efficient movement of bone structures.Due to absence of cells in tendon which helps in regeneration , it can't undergo matrix turnover because the tenocytes is no more capable repairing them. Tendon has tenocytes which synthesize the matrix component and enzyme matrix metalloproteinases during lifetime This is the reason, healing process is very slow, it repair themselves by their own and takes longer time to repair. Minor tendon injury repair on their own but major tendon injury can't be repaired fully.