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Unit III

Integumentary System

Apocrine glands the less numerous type of sweat gland, found in axillary and genital regions
Arrector pili tiny, smooth muscle attached to hair follicles
Carotene a yellow to orange pigment
Ceruminous glands a modified sudiferous glands producing a waxy secretion and situated in the external auditory canal
Dermal papillae fingerlike processes invading the epidermis from the dermis
Dermis the deep, vascular layer of the skin, composed of dense irregular connective tissue
Exocrine Glands release their secretions to the skin surface via ducts
Eccrine glands the most abundant type of sweat gland
Epidermis the outermost layer of the skin
First-degree burn burn where only the epidermis is demaged
Hypodermis the innermost and thickest layer of the skin made of adipose tissue
Keratin a tough, water insoluble, protein found in tissues such as hair, nails, and the epidermis
Keratinocytes the most common type of skin cells, they make keratin
Langerhans cells dendritic cells that play a key role in the immune reactions in the body
Meissner’s corpuscles are touch receptors located near the surface of the skin, sense light touch
Melanin a pigment that ranges in color from yellow to brown to black
Melanocytes specialized cells that produce a dark pigment called melanin
Merkel cells sensory receptors for light tough responses
Pacinian corpuscles sensory receptors found in deep layers of the skin that sense deep pressure and touch
Papillary Layer is the upper dermal region of the skin
Reticular layer the deepest skin layer, contains blood vessels, sweat and oil glands, and deep pressure receptors
Sebaceous glands Oil glands found all over the skin except on hands and soles
Sebum a mixture of oily substances and fragmental cells
Second-degree burn burn that involves injury to the epidermis and upper region of the dermis
Skin appendages arise from the epidermis and plays a unique role in maintaining body homeostasis
Stratum basale the deepest layer of the epidermis, cells constantly undergoing cell division
Stratum corneum the uppermost layer of the epidermis, consisting of shinglelike dead cell remnants completely filled with keratin
Stratum granulosum the third layer of the epidermis where cells stop dividing and begin making keratin
Stratum lucidum a think transparent layer of cells, present on thick skin only
Stratum spinosum an epidermal layer consisting of keratinocytes
Sudoriferous gland aka sweat glands
Third-degree burn burn which destroys the entire thickness of the skin
Created by: weberd