ANP 1105 Lecture Notes - Lecture 3: Chondrocyte, Aqueous Humour, Mucin

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: William Staines

Document Summary

The study of tissues and their cellular organization is called histology. Epithelial- covers, forms boundaries, protects, secretes, absorbs, filters, receives sensory information, skin/lining of digestive tract. Covering and lining epithelium- eg. skin, cavities in genital/digestive/respiratory systems, also covers walls and organs of the closed ventral body cavity. Glandular epithelium- fashions the gland of the body. Epithelial tissues have 5 distinctive properties: they can regenerate, they are supported by connective tissue, are avasular but innervated and have specialized contacts and polarity. Apical-basal polarity means that there is a difference in the structure and function of apical(upper exposed surface) and basal(lower surface) Most apical surfaces have microvilli to increase sa to absorb or secrete substances. Epithelia in the trachea have mobile cilia to propel substances. Basal surfaces have a thin supporting sheet called basal lamina which is largely made up of glycoproteins and collagen fibers and is noncellular.