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).
Chapter 8, Part B â The Spinal Cord! 13 Spinal Reï¬exes-Reï¬ex Arc Components! Spinal cord is the integrating center (âdecision makerâ) of a spinal reï¬ex arc!1. Sensory receptor!â¢ Responds to stimulus!â¢ Generates signal to be sent to integrator!2.