Unit · year 1
BU-106 · Organismal Physiology
Threads regulation · systems24 lectures4 concepts
The shared physiological principles that keep organisms alive.
PREREQUISITES
Lectures
| L01 | The Internal Environment |
| L02 | Homeostasis: The Concept |
| L03 | Negative Feedback Loops |
| L04 | Positive Feedback and When It Is Useful |
| L05 | Thermoregulation |
| L06 | Osmoregulation: An Overview |
| L07 | Diffusion and the Concentration Gradient |
| L08 | Fick's Law and Rate of Diffusion |
| L09 | Osmosis and Water Potential |
| L10 | Cells in Hypotonic and Hypertonic Media |
| L11 | Facilitated Diffusion and Active Transport |
| L12 | Surface Area to Volume Ratio |
| L13 | Why Large Organisms Need Transport Systems |
| L14 | Gas Exchange in Single-Celled Organisms |
| L15 | Gas Exchange Surfaces: Common Features |
| L16 | Gas Exchange in Fish: Countercurrent Flow |
| L17 | Gas Exchange in Insects: The Tracheal System |
| L18 | The Mammalian Lung |
| L19 | Gas Exchange in Plants |
| L20 | The Principle of Mass Transport |
| L21 | Circulatory Systems: Open and Closed |
| L22 | The Mammalian Heart and Double Circulation |
| L23 | Digestion and Absorption |
| L24 | Synthesis: Constancy Maintained by Exchange |
Concepts in this unit
T-027
Homeostasis and negative feedback
Stabilising the internal environment against disturbance.
T-028
Diffusion and osmosis
Passive movement of molecules down a gradient.
T-029
Gas exchange surfaces
Why exchange surfaces are thin, moist and large.
T-030
The principle of mass transport
Why large organisms need circulatory systems.