A patient bites down rapidly on an unexpected hard surface while chewing .cessation of motor unit recruitment i jaw closing muscles is caused by stimulation of a muscle spindles b mucosal mechanoreceptors c periodontal mechanoreceptors d nociceptors in dental pulp ans c. which of the following explains why an increasing filling of the ventricle during diastole causes a more forceful heart beat?the incressed ventricular volume. A.diminishes the refractory period of the ventricle. B.incresses end-diastolic fiber length. C.facilitates conduction in the heart. D.produces a less than optimal load. ans B.