HLTH1030 Lecture 3: HLTH1030-Lecture 3
7 Nov 2018
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Document Summary
Tissues: groups or layers of similar specialized cells with common function. Organs consist of: parenchyma = functional elements of an organ, stroma = supportive framework. Strip hearts form donor cells and regrow recipient cells aim: avoid tissue rejection. Each primary tissue type has different specific tissue types. > each with a specific role: epithelial tissue functions, forms outer layer of a body, lines alimentary canal and other hollow structures & makes up glands, main functions, secretion, barrier, absorption, protection, transcellular transport, sensing. Portion of the cell exposed to the lumen = apical surface. Opposite side rests on basement membrane/basal lamina. Mainly made of collagen fibres and glycoproteins. Always sits on a bed of loose connective tissue. Forms organized scaffold to provide structural support: epithelial tissue. Cell shapes and arrangement of layers are the bases for classifying covering and lining epithelium. Fibrous structural protein that protects epithelial cells from damage or stress. Extremely insoluble in water and organic solvents.
