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In the lungs, the partial pressure of oxygen is high therefore haemoglobin readily binds to the oxygen. This causes the haemoglobin to undergo a conformational change and increase its affinity for oxygen ...
The easiest way to understand the way that the heart works is to imagine a double pump with high pressure and low pressure tubing. One part of the pump is low pressure all the way, and that brings the blo...
When an action potential reaches an axon terminal, the depolarisation from causes voltage-gated calcium ion channels in the plasma membrane of the synaptic knob to open. As there is a much higher concentr...
Homeostasis is the physiological process of maintaining a condition such as temperature or chemicals in a normal range despite changes that occur everyday in the body. Usually, this is regulated by hormon...
water moves via the transportation stream, pulling it up through the xylem in the stem of the plant
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