10 Interesting Facts about the Integumentary System

These interesting facts about the Integumentary System will give you knowledge and information to know more about it. The integumentary system set as the organ system that protects the body from various kinds of damage, such as loss of water or abrasion from outside. It consists of skin and its appendages. Below are some details facts about the Integumentary System.

Facts about the Integumentary System 1: Skin

In humans, it accounts for about 12 to 15 percent of total body weight and covers 1.5-2m2 of surface area. It is the largest organ in the body. It distinguishes, separates, and protects the organism from its surroundings.

Facts about the Integumentary System 2: Three Major Layers

The human skin (integument) is composed of a minimum of three major layers of tissue: the epidermis (the outermost layer), dermis (the mid layer) and hypodermis (the deepest layer).

Facts 2 (Three Major Layers)

Facts 2 (Three Major Layers)

Facts about the Integumentary System 3: Epidermis

Keratin is the top layer of skin composed of epithelial cells. Its main function is protection, absorption of nutrients, and homeostasis.Its structure consists of a stratified keratinized squamous epithelium which include on four types of cells: melanocytes, Merkel cells keratinocytes, and Langerhans’ cells. Find more facts about the Hanging Gardens of Babylon here

Facts about the Integumentary System 4: Dermis

The dermis is the middle layer of skin, made from dense irregular connective tissue and areolar connective tissue such as collagen with elastin arranged in a diffusely bundled and woven pattern. It provides a site for the endings of blood vessels and nerves.

Facts 4 (Dermis)

Facts 4 (Dermis)

Facts about the Integumentary System 5: Hypodermis

The hypodermis is the innermost and thickest layer of the skin. It invaginates into the dermis and is attached to the latter, immediately above it, by collagen and elastin fibres. It is essentially composed of a type of cell specialised in accumulating and storing fats, known as adipocytes.

Facts about the Integumentary System 6: Keratin

Keratin is a fibrous protein that aids in protection. Keratin is also a waterproofing protein. Millions of dead keratinocytes rub off daily. The majority of the skin on the body is keratinized or waterproofed.

Facts 6 (Keratin)

Facts 6 (Keratin)

Facts about the Integumentary System 7: Integumentary Exchange

Integumentary Exchange is the exchange system where gases simply diffuse into and out of the interstitial fluid. Small-bodied invertebrates of aquatic or continually moist habitats do this exchange system.

Facts about the Integumentary System 8: As Protectors

The skin has an important job of protecting the body and acts as the body’s first line of defense against infection, temperature change, and other challenges to homeostasis. It also has main role as protectors of the body’s internal living tissues and organs, against invasion by infectious organisms, against sunburn by secreting melanin and so forth.

Facts 8 (As Protectors)

Facts 8 (As Protectors)

Facts about the Integumentary System 9: Diseases and Injuries

Possible diseases and injuries to the human integumentary system include: Rash, Blister, Athlete’s foot, Infection, Sunburn, Skin cancer, Albinism, Acne, Herpes, Herpes labialis, Impetigo, Rubella, Cancer, Psoriasis and Rabies. Find more facts about the Hopi Tribe here

Facts about the Integumentary System 10: Albinism

Albinism is a congenital disorder characterized by the complete or partial absence of pigment in the skin, hair and eyes due to absence or defect of tyrosinase, a copper-containing enzyme involved in the production of melanin. It is the opposite of melanism.

Facts 10 (Albinism)

Facts 10 (Albinism)

Hopefully these interesting facts about the Integumentary System will enrich your sources of reading.

 

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