BSC 181 1st Edition Lecture 10 Outline of Last Lecture I. Control of Cell DivisionII. Protein SynthesisIII. TranscriptionIV. TissuesA. Epithelial TissuesOutline of Current Lecture V. Models of Secretion VI.Connective Tissues OverviewVII. Proper Connective TissuesVIII.Special Connective TissuesCurrent LectureModels of Secretion: when you are talking about glands, the glands can secrete their substances in two different ways. Merocrine: these are secreted by exocytosis, (through sweat, salivary glands)Holocrine: the substance is secreted by the rupture of the gland cellsConnective Tissue Overview: this is the most abundant tissue in our body. Unlike the epithelial tissue, the connective tissue is made up less of cells and more of fibers. It has four main areas offunction. First, they provide protection primarily through adipose tissue. They also help with binding and support, as well as Insulation and Transportation. Blood is the connective tissue associated with Insulation and transportation. There are certain structural elements of the connective tissue that we need to know about. The Ground Substance, the Fibers, and the Cells.Ground Substance: this is the substance that just fills in the space between the cells. They serve the body as acting like strainers. Fibers: there are far more fibers than there are cells in connective tissue. There are certain kinds of fibers that are found in connective tissue, elastic, reticular, and collagen. Elastic fibers are long and thin, and they allow for stretch. Reticular fibers are branched These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.and they form networks for the body. Collagen fibers are tough and therefore they provide a lot of strength.Cells: some of the important cells include, Fibroblasts (cells that build fiber), chondroblasts (cells that build cartilage), osteoblasts (cells that build bone), and hematopoietic stem cells (cells that make blood). These -blasts are the starting points that we need for these tissues. (Blasts: means an immature/budding cell, or building).Proper Connective Tissues: There are many different types of proper connective
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