The integumentary system is the organ system that protects the body from damage, comprising the skin and its appendages (including hair, scales, feathers, hoofs, and nails). The integumentary system has a variety of functions; it may serve to waterproof, cushion, and protect the deeper tissues, excrete wastes, and regulate temperature, and is the attachment site for sensory receptors to detect pain, sensation, pressure, and temperature. In most terrestrial vertebrates with significant exposure to sunlight, the integumentary system also provides for vitamin D synthesis.
The integumentary system consists of the largest organ in the body, the skin. This extraordinary organ system protects the internal structures of the body from damage, prevents dehydration, stores fat and produces vitamins and hormones. It also helps to maintain homeostasis within the body by assisting in the regulation of body temperature and water balance. The integumentary system is the body's first line of defense against bacteria, viruses and other microbes. It also helps to provide protection from harmful ultraviolet radiation. The skin is a sensory organ in that it has receptors for detecting heat and cold, touch, pressure and pain. Components of the skin include hair, nails, sweat glands, oil glands, blood vessels, lymph vessels, nerves and muscles. Concerning integumentary system anatomy, the skin is composed of a layer of epithelial tissue (epidermis) that is supported by a layer of connective tissue (dermis) and an underlying subcutaneous layer (hypodermis or subcutis).
INTEGUMENTARY SYSTEM - SKIN IS IN!
Integumentary? That's a big word to describe something as simple as your skin. First, the skin is not all that simple. Second, integumentary systems take a wide variety of forms in animals across the world. Just think about the differences in the skin of a fish, a frog, a lizard, a bird, and a mammal. Scales, slime, feathers, and hair are all parts of the integumentary systems for animals. Your parts include the basic types of skin, hair, fingernails, oil, and sweat glands. They are found in integument layers called the epidermis (top), dermis, and subcutaneous (bottom). WHAT DOES THIS SYSTEM DO?
The integumentary system is all about protection. The system protects your body from disease by providing a barrier to viruses and bacteria. The system protects your body from physical damage by offering a thick barrier that both contains your internal organs and stops large objects, like a rock from entering your body.
The system also protects your body from dehydration, overheating, or freezing. The layer of skin can sweat and help your body cool or surround a layer of fat that keeps warmer temperatures inside. Did you know your skin makes up...