BIOB34H3 Lecture Notes - Lecture 6: Lipid Bilayer, Epithelium, Paracellular Transport
Document Summary
Animal physiology: lecture 6 (life"s borders: membranes and epithelia) An animal"s work: use chemical energy to synthesize complex molecules. Today"s objectives: describe the molecular structure of phospholipids and how it helps to determine membrane properties, describe how receptors are used by cells to transmit extracellular signals, differentiate transcellular and paracellular paths for molecular transport. Identify the apical/basolateral regions and junctions of epithelia. What sorts of molecular order do animals generate: molecular structures, energy gradients (chemical gradient, important component of homeostasis. There are 2 types of borders: cell membranes (major structure made up of lipids, but contains various carbohydrates and proteins embedded in it, epithelia (sheaths of cells that act as borders) Can still receive signals, if signals are hydrophobic. It can pass through the membrane and can bind to intracellular receptors. The intracellular receptors have direct effects on dna transcription: ex.
