BIOL 207 Lecture Notes - Lecture 6: Apocrine, Holocrine, Exocytosis
29 Nov 2016
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Document Summary
Combination of epithelial layer and an underlying connective tissue layer. A gland consists of one or more celles that produce and secrete a particular product called a secretion. No epithelial cells involved, no ducts ( passage ways) Exocrine glands- release contents into cavity ( glands) Epithelial cells of the glands secrete content into ducts and ducts are lined with epithelial cells. Apocrine glands apical part of cell breaks off and the tip of the cell dies. Eccrine are of meocrine style exocytosis. All ct arise form mesenchyne ( tissue that gives rise) Ground substance- homogeneous product of connective tissue cells that surrounds it. Varies from fluid to jelly- like cell. Determine division of loose and dense connective tissue. 4 categories of connective tissue: ctp connective tissue proper (fibroblast) Elastic: cartilage ( cartelagenous ) ( chondroblasts, bone (osseous) (oseteoblasts, blood (hemosytoblasts) hematopoietic. Ct stem cell type give rise to connective tissues. Consists of a number of cells and fiber types.
