Physiology
How the systems mapped in PCEM2 actually work, moment to moment.
The path through this topic
0 of 9 steps done.
ReadHomeostasis and feedback loopsThe single idea the whole of physiology is built on, and the two shapes a control loop can take.
5 min- ReadMembrane potential, action potential and the synapse
How a cell holds a voltage, how it inverts it in a millisecond, and how it passes the message on.
6 min - ReadThe cardiac cycle and gas exchange
One heartbeat in five phases, what sets cardiac output, and how the lung loads oxygen and unloads CO₂.
6 min - ReadRenal regulation and the endocrine axes
How the kidney sets the volume and composition of the internal environment, and how hormones are commanded.
6 min - Memo cardsPhysiology: memo cards
The whole of physiology as a deck: prompt on the front, answer on the back.
4 min 
Multiple choicePhysiology: the core mechanismsFeedback, membrane potential, the cardiac cycle and gas exchange.
5 min
Match pairsMatch hormone to effectPair each hormone with what it actually does.
4 min- Multiple choicePhysiology: harder cases
Frank–Starling, refractory periods, filtration rate and hormone action.
4 min 
Put in orderOrder the physiological sequencesRebuild the action potential and the cardiac cycle phase by phase.
5 min