Importance Of Integumentary System

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Recommended: Integumentary system with their functions

INTEGUMENT AND ITS DERIVATIVES Integument is the outer protective covering of the body which includes skin and all the structures derived from it. The integumentary system is the largest organ system of the body. The integumentary system has a variety of functions. It may function as water proof, cushion, and provides protection to the deeper tissues, regulate temperature, excretes waste and is the site of sensory receptor for pain, pressure and temperature. So, it is popularly called as “Jack of all trades but Master of none’ …show more content…

*Lower layer of dermis is made up of connective tissue. Fig. 26.6 V. S. Skin of reptiles
Birds:-*In birds, the integument is thin and is of loose fitting to have maximum freedom of movement for flight. *The skin is covered with feathers (Fig.26.7) and lacks chromatophores.
*In birds skin glands are absent, except uroopygial gland which is well developed in aquatic birds. *The epidermis is soft, except on feet and shank where it is thick and forms epidermal scales. *Dermis is compact and is devoid of dermal elements. *Feathers and scales contain pigment cells.

Fig. 26.7 V. S. of skin of pigeon
Mammals:-* Mammalian skin is elastic, water proof and thickest (Fig. 26.7) among vertebrate …show more content…

26.8 V. S. of skin of mammal

Comparison between skin of fishes and amphibians

Fishes Amphibians
*Skin is rough and tough which remains *Skin is smooth and loose which remain attached with the underlying muscles. separates from the underlying muscles by lymph . sac. *Skin consists of epidermis and dermis. *Skin consists of epidermis and dermis. *Stratum corneum is absent. *Stratum corneum is absent. *Dermis is less vascularised. *Dermis is highly vascularised. *Dermis is not differentiated. *Dermis is differentiated into stratum . . spongiosum and stratum compactum *Dermis contains unicellular mucous glands. *Multicellular mucous glands are present in dermis. *Chromatophores and iridocytes are present *Chromatophores are present in the upper

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