BIOB33H3 Lecture Notes - Eponychium, Loose Connective Tissue, Proteoglycan
Document Summary
The integumentary system (based on chapters 2 and 4) 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. More individual snap than cell adhesion molecule. Ions, glucose, amino acids, regulatory molecules and other small solutes pass through. Riddle: what organ weighs about 5 kg and measures 1-2 m2 (large surface area and same weight as your head) skin. Skin: hair, nails, oil glands, mammary glands. Integument = skin, uses 2 types of tissue: Epithelial on surface, protects underlying body layers or lines body cavities, composed of one or more layers of closely packed cells, little or no extracellular matrix cells and no blood vessels within.
