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Stimulus arrives and changes membrane polarity to the threshold to elicit an action potential (all or nothing nature). Depolarisation- sodium ion channels open increasing the membrane polarity Repolarisat...

The sliding filament mechanism allows for muscle contraction. When an action potential arrives it travels through the sarcoplasmic reticulum and spreads down the transverse tubules into the muscle belly c...

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Choosing which four medical schools to apply to can seem like an impossible decision! Don't worry - there are lots of ways to narrow it down. There are thirty three medical schools in the UK and each one ...

Cellulose is a linear polysaccharide polymer with many glucose monosaccharide units. The linkage is beta, which makes it different from starch. This difference results in a major different in digestibilit...