Potassium channels remain open for another few tenths of a second, with resultant excess negativity inside the fiber; this process is called hyperpolarization.

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#Id: 5299

#Unit 7. System Physiology – Animal

Period of relaxation called diastole, during which the heart fills with blood A period of contraction called systole

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#Id: 3973

#Unit 7. System Physiology – Animal

The action potential spreads throughout the myocardium in the following sequence: SA node  Atrial internodal tracts and atria  AV node  Bundle of His  Purkinje system  Ventricles

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#Id: 2954

#Unit 3. Fundamental Processes

By counting the number of sites to which ORC binds, we can estimate that there are about 400 origins of replication in the yeast genome. This means that the average length of a replicon is -35,000 bp.

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#Id: 1456

#Unit 4. Cell Communication and Cell Signaling

Heterophilic Binding

A CAM on one cell can directly bind to a different class of CAM on an adjacent cell 

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#Id: 8811

#Unit 6. System Physiology – Plant

first and second excited singlet states in chlorophyll for a molecule that has two major absorption bands in blue and red.