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The cardiac cycle, by convention, is considered to begin with depolarisation of the sino-atrial node (SAN). This depolarisation spreads across the two atria, causing the right and left atria to contract. ...
An atheroma is the deposition of fatty material in the innermost lining of an artery (caused by the process of 'atherosclerosis'). Atheromas have a tendency to rupture and this increases the likelih...
Simple diffusion - fatty acids and glycerol are lipophilic and hydrophobic, therefore can diffuse straight through the lipid bilayer membrane of the epithelial cells down the concentration gradient
Endocrine parts of pancreas called Islets of Langerhans. 2 populations of cells: A cells- secrete glucagon (RAISES blood glucose conc) - when all the 'gluc has...
DNA and RNA are both examples of nucleic acids, and so are formed from long chains of nucleotides. However, there are three broad structural differences between the two. 1) DNA is usually found double-str...
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