Flashcards
The Dermis
Flashcards do conjunto (16)
- 1what are the two layerspapillary and reticular
- 2papillary layerconsists of loose connective tissue and contains the capillaries and sensory neurons supplying the surface of the skin
- 3reticular layerconsists of interwoven dense irregular connective tissue including collagen fibers which extend into the papillary layer and the subcutaneous layer
- 4how are wrinkles formedappear when the elastic fibers of the dermis have been stretched and contracted so repeatedly they can not return to normal
- 5what are leading causes to wrinklescan be caused by age, hormones, and exposure to destructive ultraviolet radiation
- 6what causes stretch marksappear when the dermis has been extensively distorted (the elastic capabilities of the skin have been exceeded)
- 7leading causes of stretch marksmost often a result of pregnancy and/or substantial weight gain followed by weight loss
- 8medicine for stretch marks or acneretina-A (Tretinoin)
- 9what does resin-A doincreases blood flow to the dermis which stimulates dermal repair
- 10what are lines of cleavageorientation of collagen fibers in the dermis that follow lines of tension in the body. the bundles of collagen fibers are aligned to resist forces applied to the body
- 11clinical significancea cut made parallel to a cleavage line will usually remained closed, heal faster, and will have less scarring. a cut made at a right angle to a cleavage line will usually do the opposite
- 12components of the dermalcells of connective tissue proper, accessory organs often extend into the dermis, contain blood vessels, lymph vessels, and nerve fibers
- 13cutaneous plexusan artery supply for the skin, forms in the subcutaneous along the reticular layer border
- 14papillary plexusnetwork of arteries in the papillary layer, provides arterial blood to capillary loops of the epidermal-dermal boundary
- 15functions of the nerve supply to the skincontrol blood flow, adjust gland secretion creates, monitor sensory neuron receptors in the dermis and deeper epidermis
- 16dermal receptors examplesMeissner's corpuscles are sensitive to light touch
Ruffini corpuscles are sensitive to stretch
Pacinian corpuscles are sensitive to deep pressure and vibration
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- Descrição
- 9th grade Science FlashCards sobre The Dermis, criado por Cooper Kane em 01-11-2017.
- Criado por
- Cooper Kane
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