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Unit III
Integumentary System
Question | Answer |
---|---|
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 |