In conditional specification the array of interactions it has with its neighbors, which may include: 

cell-to-cell contacts (juxtacrine factors)

secreted signals (paracrine factors)

physical properties of its local environment (mechanical stress)

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#Id: 6530

#Unit 7. System Physiology – Animal

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#Id: 7027

#Unit 11. Evolution and Behavior

Proximate causes - The subject of cell biology, neurobiology, and many other biological disciplines

Ultimate causes - Their historical causes, especially the action of natural selection

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#Id: 7585

#Unit 5. Developmental Biology

The influx of bicarbonate ions (and possibly other ions) alkalinizes the sperm, raising its pH. This will be critical in the subsequent activation of calcium channels

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#Id: 3156

#Unit 7. System Physiology – Animal

Total lung capacity =Vital capacity + Residual volume

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#Id: 5320

#Unit 7. System Physiology – Animal

Reduced Ventricular Ejection

Left atrial pressure continues to increase as blood returns to the left heart from the lungs.