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Integumentary System

Integumentary System All Vocabulary

TermDefinition
Integumentary System The skin and its accessory organs.
Cutaneous Membrane Another term for the skin.
Stratified Squamous Epithelium Type of tissue making up the epidermis.
Keratin Fibrous protein produced by keratinocytes.
Melanin Pigment produced by melanocytes to protect skin from UV radiation.
Desmosomes Cell structures that tightly connect keratinocytes.
Epidermis Outer, thinner layer of the skin, made up of five layers.
Stratum Basale The deepest layer of the epidermis.
Stratum Spinosum Layer above the basale, where cells start to flatten.
Stratum Granulosum Layer where cells begin to die and accumulate keratin.
Stratum Lucidum Clear layer found in thick skin (palms, soles).
Stratum Corneum The outermost, dead layer of skin cells.
Keratinocytes The most common type of cell in the epidermis; produce keratin.
Melanocytes Cells that produce melanin, found in the deepest layer of the epidermis.
Dendritic (Langerhans) Cells Macrophages that help protect against pathogens.
Tactile (Merkel) Cells Sensory cells responsible for touch sensation
Dermis Thicker layer beneath the epidermis made of dense irregular connective tissue.
Papillary Layer Upper layer of the dermis, with projections called dermal papillae.
Reticular Layer Deeper layer of the dermis, responsible for skin strength.
Collagenous Fibers Fibers in the dermis that provide strength and prevent skin tears.
Elastic Fibers Fibers that allow skin to stretch and move.
Vascularization Blood supply in the dermis, delivering nutrients to the skin.
Hypodermis Subcutaneous layer below the dermis, made mostly of adipose tissue.
Adipose Tissue Fat tissue used for energy storage and insulation.
Hair Follicle A structure in the dermis from which hair grows.
Hair Root Part of the hair located below the surface.
Hair Shaft Visible part of the hair extending beyond the skin.
Arrector Pili Muscle Smooth muscle attached to hair follicles that causes hair to stand upright.
Sebaceous Glands Oil glands that secrete sebum to lubricate the skin and hair.
suderiferous Glands Glands that secrete sweat to regulate body temperature.
Apocrine Glands Sweat glands found in specific areas (armpits, groin) that become active at puberty.
Eccrine Glands Sweat glands found throughout the body that help with temperature regulation.
Ceruminous Glands Specialized glands that produce earwax (cerumen).
Hirsutism Excessive body hair in women due to increased male sex hormones.
Alopecia Hair loss.
Androgenic Alopecia Male pattern baldness.
Alopecia Areata Sudden, patchy hair loss.
Acne Vulgaris Inflammation of sebaceous glands, often resulting in pimples.
Psoriasis Chronic condition causing red or pink patches on the skin.
Eczema Inflammatory skin condition, often itchy.
Impetigo A bacterial infection that forms sores, often in children.
Athlete’s Foot Fungal infection affecting the toes and soles.
Urticaria (Hives) Allergic reaction causing raised, itchy welts on the skin.
Basal Cell Carcinoma The most common skin cancer, usually not metastatic.
Squamous Cell Carcinoma Skin cancer that is more likely to spread than basal cell carcinoma.
Melanoma A malignant form of skin cancer originating from melanocytes, with distinct warning signs (ABCD
First-Degree Burn Only affects the epidermis.
Second-Degree Burn Affects the epidermis and part of the dermis.
Third-Degree Burn Destroys the entire thickness of the skin.
Fourth-Degree Burn Can extend to deeper tissues, including bone.
"Rule of Nines" A method to estimate the extent of burn injuries.
Fibroblasts Cells that help repair tissue and form scars after injury.
Created by: brookebiery
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