A heart attack happens when blood flow to the heart suddenly. becomes blocked and the heart canât get oxygen. quickly, the heart muscle fails to pump and begins to die. disease (CHD), also called coronary artery disease.
The B-cell receptor is composed of two parts: i) A membrane-bound immunoglobulin molecule of one isotype (IgD, IgM, IgA or IgE).he B-cell receptor is composed of two parts: i) A membrane-bound immunoglobulin molecule of one isotype (IgD, IgM, IgA or IgE).
A chemoreceptor, or chemosensor, is a sensory receptor that translates a chemical signal into an action potential. Chemoreception is the three-stage process by which chemoreceptors function. The levels of chemoreception are detection, amplification and signaling. Chemoreceptors only bind to a certain kind of molecule.