For the last few multiple-choice questions, study the diagram below carefully and use these answe...

For the last few multiple-choice questions, study the diagram below carefully and use these answer choices: a) Sensor b) Afferent pathway c) Integrating center d) Efferent pathway e) Effector ab) Effector's action Stimulus C. A. CNS B. D. 57) The cell and its signal molecule indicated by the letter A above represent what step in a feedback 58) The component indicated by the letter B above 59) The rectangular structure indicated by the letter C 60) The arrow next to the letter D above represents loop? represents what part of a feedback loop? above represents what part of a feedback loop? what part of a feedback loop?