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Integumentary System Sebastian Calderon Period 7 (Accessory Organs (Nails…
Integumentary System Sebastian Calderon
Period 7
The function of the integumentary system is to act as a barrier from the outside world, it also functions to retain body fluids, protect against disease, and eliminate waste.
Body Membranes
Mucous tissue is epithelial tissue only and is mostly located in the respiratory tract.
Serous tissue has simple squamous squamous epithelial tissue and is located in the liver and stomach.
Cutaneous has a deep connective tissue layer and is skin.
Synovial is only made up of connective tissue and are the sacs around the joints.
Layers of Skin
Dermis - Has dense fibers and is much more thicker than the epidermis, it also contains nerves
Hypodermis (Subcutaneous) - Is the deepest layer of the skin, made up of adipose tissue, and it absorbs shock
Epidermis - is the top layer of skin, contains keratinized stratified squamous epithelium.
Layers of Dermis
Papillary - Is the thin layer of the dermis, it is directly under epidermis
Reticular Layer - Is the deepest layer, it has connective tissue
Layers of Epidermis
Stratum Spinosum - has several layers of thick flattened cells
Stratum Granulosum - is a very thin region, keratinization starts here
Stratum Basal - is the deepest layer
Stratum Lucidum - is a layer of clear dead flat cells
Stratum Corneum - Is the outermost later, it has 20 to 30 layers of dead cells
Accessory Organs
Nails - Protects the toes and fingers
Sudoriforous Glands - is the gland that produces sweat
Hair - protects the scalp from injury and heat
Sebaceous Gland - is the gland that produces oil for the skin and hair
Burns and Skin cancers
3rd degree burn - affects all the layers of skin, is least painful at first
Melanoma - is the most dangerous type of skin cancer as it can be deadly in some cases
2nd degree burn - affects the epidermis and top portion of epidermis
1st degree burn - affects the epidermis, is the most painful