BIOC33H3 Lecture Notes - Lecture 2: Dendritic Cell, Melanosome, Eccrine Sweat Gland
Document Summary
Lecture 2 the integumentary system (based on chapters 2 and 4) Body cavitis consist of a double-layered membrane (parietal and visceral): The membrane nearest the wall of the body (farthest from the organs) is the parietal membrane, parietal pleura (lungs), parietal pericardium (heart), parietal peritoneum (abdomen) The membrane farthest from the wall of the body (nearest the organs) is the visceral membrane, visceral pleura (lungs), visceral pericardium (heart), visceral peritoneum (abdomen) These are very strong linkages and they can resist stretching and twisting. Linkages occur via cell adhesion molecules (cams) which bind to each other and to other extracellular materials and proteoglycans that link the opposing membranes and form a junction with the cytoskeleton within the adjoining cells. Ions, glucose, amino acids, regulatory molecules and other small solutes pass through. Common in epithelial cells where they help coordinate the beating of cilia and in muscles where they coordinate muscle contraction.
