Terminology Flashcards
Ostium
opening into a vessel or cavity of the body. Like fallopian tube ostium at the infundibulum
The basal lamina is a layer of extracellular matrix secreted by the epithelial cells, on which the epithelium sits. It is often incorrectly referred to as the basement membrane, though it does constitute a portion of the basement membrane
…
Apocrine
exocrine glands when the release of secretory materials is accompanied with loss of part of cytoplasm.
Merocrine
cell is classified as merocrine if the secretions of that cell are excreted via exocytosis from secretory cells into an epithelial-walled duct or ducts and then onto a bodily surface or into the lumen.
Moving toward or away from a atimulus
Taxis
Ex: chemotaxis
Inflammatory infiltrate definition
1) A microscopic finding indicating the presence of acute, subacute or chronic inflammation in a tissue sample.
2) Inflammatory cell infiltration occurs when inflammatory cells such as neutrophils, eosinophils, lymphocytes, plasmacytes, macrophages and mast cells infiltrate around the blood vessels (perivascular infiltration)
Chronic infiltrate means
The cell types that characterize what pathologists term chronic inflammation primarily including lymphocytes, macrophages, and plasma cells
Acute inflammatory infiltrate
The predominant cell of acute inflammation is the neutrophil.
Macules (dermatology terms)
Macules are circumscribed alterations in skin color. The skin surface is neither elevated or depressed in relation to the surrounding skin. Macules may be of any size or color. A macule greater than 2 cm in diameter is called a patch
Papule ( dermatology terms)
solid, elevated lesion with no visible fluid which may be up to 1⁄2 cm in diameter.
The elevation may be accounted for by metabolic deposits, infiltrates, or hyperplasia of cellular elements, etc.
Nodules (dermatology terms)
forms of papules, but are larger and deeper. They may be located in the dermis or subcutaneous tissue, or in the epidermis. Nodules are usually 1⁄2 cm. or more in diameter
Plaque
elevated area of skin 2 cm. or more in diameter. It may be formed by a coalescence of papules or nodules. The surface area is greater than its height. It is a plate-like lesion
localized collection of pus in a cavity formed by disintegration or necrosis of tissue
Abscess
Cyst
closed sac that contains liquid or semisolid material. On palpation a cyst is usually resilient.
Erosion (dermatology related)
Loss of epidermis