Table of Contents
Integument Meaning; Integument of Mammals
Integument is the external covering of an animal’s body. This can include anything from the skin and hair to the scales and feathers. The integument of mammals refers specifically to the skin and hair.
| S.NO | CONTENT |
| 1 | INTRODUCTION |
| 2 | INTEGUMENT FUNCTION |
| 3 | IMPORTANCE OF INTEGUMENT |
| 4 | INTEGUMENT OF VERTEBRATE CLASSES |
| 5 | HAIR AND GLANDS OF SKIN |
Integument Definition
The integument is the external layer of skin that covers the body. It is made up of three layers: the epidermis, the dermis, and the subcutaneous tissue. The epidermis is the outermost layer and is made up of squamous epithelial cells. The dermis is the middle layer and is made up of connective tissue and contains sweat glands, hair follicles, and sebaceous glands. The subcutaneous tissue is the innermost layer and is made up of adipose tissue.
Importance of Integument
ary System
The integumentary system is important because it helps to protect the body from infection and injury. The skin is the largest organ in the body and it is important for protecting the body from environmental hazards. The skin also helps to regulate body temperature and it produces vitamin D. The hair and nails also help to protect the body and they also play a role in the cosmetic appearance of the body.
Integument of the Vertebrate Classes
There are four major classes of vertebrates: amphibians, reptiles, birds, and mammals. Each class of vertebrate has a unique integument, or skin.
The integument of amphibians is thin and moist. Amphibian skin is highly permeable, meaning that it allows water and other molecules to move in and out of the skin easily. This allows amphibians to regulate their body temperature and water balance. Amphibian skin also contains mucous glands, which secrete a sticky substance that helps to keep the skin moist.
Reptile skin is thick and dry. Reptiles have developed scales on their skin to help protect them from the environment. The scales also help to regulate the reptile’s body temperature. Reptiles also have mucous glands, which secrete a sticky substance that helps to keep the skin moist.
Bird skin is thin and smooth. Birds do not have scales or fur, and their skin is relatively impermeable. This allows birds to maintain their body temperature and water balance more easily than amphibians or reptiles. Bird skin also lacks mucous glands, so it does not secrete a sticky substance to keep the skin moist.
Mammal skin is thick and hairy. Mammals have developed fur or hair to help protect them from the environment. Mammalian skin is also relatively impermeable, and mammals have developed sweat glands to help regulate their body temperature. Mammalian skin also contains mucous glands,
Integument of Amphibians
The integument of amphibians is made up of an outer layer of skin, an inner layer of skin, and a layer of mucous. The outer layer of skin is tough and waterproof and helps protect the amphibian from environmental hazards. The inner layer of skin is thin and moist and helps keep the amphibian’s body temperature regulated. The layer of mucous helps keep the amphibian’s skin moist and helps protect it from bacteria and other environmental hazards.
Hair
transplant is a surgical procedure in which hair follicles are taken from one part of the body, usually the back of the head, and transplanted to another part of the body, usually the scale.
Follicles are taken from the donor area in small groups of 1 to 4 hairs. The follicles are then placed in a solution that preserves them. The solution is then injected into the bald or thinning area.
Glands of the Skin
There are many glands in the skin. Sebaceous glands are the most common, and they secrete an oily substance called sebum. Sebum helps to keep the skin moist and protect it from bacteria and other contaminants. Other glands in the skin include sweat glands, which secrete sweat, and apocrine glands, which secrete a thick, oily substance that smells bad.
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