Definitions
The Integumentary system: Is an organ system consisting of skin and it's associated structures.
Skin: Tissue creating an external covering of the body.
Epidermis: The upper layer of skin composed of the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum.
The Stratum Corneum: The outermost layer of skin consisting of dead and Keratinization cells. Used as a barrier for light, heat, chemicals and micro-organisms. Found in the Edidermis.
The Stratum Lucidum: The layer under the stratum corneum in the Epidermis in the skin of plams and soles.
The stratum Granulosum: Found in the Epidermis. Contains cells that die and move to the surface.
Stratum Spinosum: Found in the Epidermis. Contains spiny-shaped cells
Stratum Basale: The deepest layer in the Epidermis. Contains a continuous layer of cells.
Dermis: The lower layer of skin composed of the papillary layer and reticular layer.
Papillary Layer: Is composed of collagen fibers. Is located in the dermis.
Reticular Layer: Is composed of dense connective tissue and collagen fibers.
Hypodermis: A layer mainly used to store fat.
Eccrine Sweat Gland: The major sweat gland in the human body.
Adipose Tissue: One of the main connective tissue.
Root Hair Plexus: Sends nervous impulses to the brain when the hair moves.
Pacinian Corpuscle: Acts as a receptor for pressure and vibration.
Hair root: Part of the hair that is embedded in the hair follicle.
Hair follicle: Cells and connective tissue that surrounds the root of the hair.
Arrector Pili Muscle: Small muscles attached to hair follicles. When these muscles contract is uses you hair to stand on end. ( goose bumps)
Sabaceous Gland: A small gland that creates a oily matter into the hair follicle.
Dermal Papillae: Contains blood vessels that nourish the hair follicles.
Argan stem cells: Used to delay depletion of the Dermal Papillae.
Nail: The protective covering of the finger.
Nail Matrix: The area where the nail rests.
Root of the Nail: The end of the nail under the proximal nail fold.
Proximal Nail Fold: Fold of soft tissue.
Eponychium: Layer of skin surrounding the nail.
Body of the Nail: The exposed portion of the nail distal to it's root.
Nail Bed: A layer of cells underlying the nail.
Free Edge of Nail: Edge of nail that protects the body of the nail.
Hyponychium: A layer of Epidermis under free edge of nail.
Hair Shaft: Portion of hair that does not grow.
Skin: Tissue creating an external covering of the body.
Epidermis: The upper layer of skin composed of the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum.
The Stratum Corneum: The outermost layer of skin consisting of dead and Keratinization cells. Used as a barrier for light, heat, chemicals and micro-organisms. Found in the Edidermis.
The Stratum Lucidum: The layer under the stratum corneum in the Epidermis in the skin of plams and soles.
The stratum Granulosum: Found in the Epidermis. Contains cells that die and move to the surface.
Stratum Spinosum: Found in the Epidermis. Contains spiny-shaped cells
Stratum Basale: The deepest layer in the Epidermis. Contains a continuous layer of cells.
Dermis: The lower layer of skin composed of the papillary layer and reticular layer.
Papillary Layer: Is composed of collagen fibers. Is located in the dermis.
Reticular Layer: Is composed of dense connective tissue and collagen fibers.
Hypodermis: A layer mainly used to store fat.
Eccrine Sweat Gland: The major sweat gland in the human body.
Adipose Tissue: One of the main connective tissue.
Root Hair Plexus: Sends nervous impulses to the brain when the hair moves.
Pacinian Corpuscle: Acts as a receptor for pressure and vibration.
Hair root: Part of the hair that is embedded in the hair follicle.
Hair follicle: Cells and connective tissue that surrounds the root of the hair.
Arrector Pili Muscle: Small muscles attached to hair follicles. When these muscles contract is uses you hair to stand on end. ( goose bumps)
Sabaceous Gland: A small gland that creates a oily matter into the hair follicle.
Dermal Papillae: Contains blood vessels that nourish the hair follicles.
Argan stem cells: Used to delay depletion of the Dermal Papillae.
Nail: The protective covering of the finger.
Nail Matrix: The area where the nail rests.
Root of the Nail: The end of the nail under the proximal nail fold.
Proximal Nail Fold: Fold of soft tissue.
Eponychium: Layer of skin surrounding the nail.
Body of the Nail: The exposed portion of the nail distal to it's root.
Nail Bed: A layer of cells underlying the nail.
Free Edge of Nail: Edge of nail that protects the body of the nail.
Hyponychium: A layer of Epidermis under free edge of nail.
Hair Shaft: Portion of hair that does not grow.
Key terms
The Integumentary system: Is an organ system consisting of skin and it's associated structures.
The Immune System: The body's defence against infectious organisms and other invaders.
The Circulatory System: The system that circulates blood through the body
The Nervous System: Nerve cells and fibers that transmits nerve impulses between parts of the body.
Accessory structures: Hair, nails and glands.
Keratinization: When cells move to the surface and lose water.
Receptors: A cell or group of cells that receives stimuli.
Dermatologist: A doctor who specializes in diseases and disorders of the skin.
Acne: The occurrence of inflamed or infected sebaceous glands in the skin.
Warts: A growth on the skin.
Vitiligo: A condition in which the pigment is lost from areas of the skin.
Skin Cancer: Cancers that arise from the skin.
Basal Cell Carcinoma: Type of skin cancer that begins in the basal cell.
Squamous Carcinoma: Type of skin cancer that begins in the Squamous cell.
Melanoma: A tumor of melanin-forming cells.
Cells: The smallest structural and functional unit of an organism.
The Immune System: The body's defence against infectious organisms and other invaders.
The Circulatory System: The system that circulates blood through the body
The Nervous System: Nerve cells and fibers that transmits nerve impulses between parts of the body.
Accessory structures: Hair, nails and glands.
Keratinization: When cells move to the surface and lose water.
Receptors: A cell or group of cells that receives stimuli.
Dermatologist: A doctor who specializes in diseases and disorders of the skin.
Acne: The occurrence of inflamed or infected sebaceous glands in the skin.
Warts: A growth on the skin.
Vitiligo: A condition in which the pigment is lost from areas of the skin.
Skin Cancer: Cancers that arise from the skin.
Basal Cell Carcinoma: Type of skin cancer that begins in the basal cell.
Squamous Carcinoma: Type of skin cancer that begins in the Squamous cell.
Melanoma: A tumor of melanin-forming cells.
Cells: The smallest structural and functional unit of an organism.