BMS1031 Lecture summaries

Description

Medical Biophysics Blood Flow & Pressure Circulatory system and heart valves Blood pressure, flow, resistance and compliance Hydrostatic pressure Laminar vs turbulent flow Continuity equation Poiseuille’s law Bernoulli’s principle Diffusion, Osmosis & Tonicity Cell membrane and membrane transport Diffusion and osmosis Osmolarity vs tonicity Isotonic, hypotonic and hypertonic solutions Fick’s law Respiration & Gas Physics Pressure and volume changes during breathing Kinetic theory of gases Boyle’s, Charles’ and Gay-Lussac’s laws Ideal gas law Partial pressures Henry’s law and gases in solution Skeletal Tissue Mechanics Functions and components of the skeleton Compact vs cancellous bone Mechanical properties of bone Bone strength and response to forces Biomechanics Force, motion and acceleration Newton’s laws Work, energy and power Torque and moments Centre of gravity and stability Levers and mechanical advantage Bioelectricity Electrical charge and forces Electric fields and potential Current and resistance Ohm’s law Capacitors and biological membranes Membrane Potentials & Electrical Signalling Ion concentration gradients Resting membrane potential Ion channels Depolarisation and repolarisation Action potentials Radiation Physics Electromagnetic spectrum Ionising vs non-ionising radiation Radioactive decay and half-life Alpha, beta, gamma and X-rays Interaction of radiation with matter Biological Effects of Radiation Direct and indirect cellular/DNA damage Deterministic vs stochastic effects Radiation dose and dosimetry Absorbed, equivalent and effective dose Background radiation Radiation protection: time, distance and shielding