Smooth muscle and cardiac muscle are both involuntary muscles. Specialized cardiac muscle fibers make up the pacemaker that regulates your heart rate. This pacemaker, in turn, is under the control of the autonomic nervous system, the part of the nervous system that operates below your level of consciousness.
amnesia - partial or total loss of memory; he has a total blackout for events of the evening memory loss, blackout cognitive state, state of mind - the state of a person's cognitive processes
Full Definition of AMNESIA. 1. : loss of memory due usually to brain injury, shock, fatigue, repression, or illness. 2. : a gap in one's memory. 3. : the selective overlooking or ignoring of events or acts that are not favorable or useful to one's purpose or position.â amÂ·neÂ·siÂ·ac \-zhÄ-Ëak, -zÄ-\ or amÂ·neÂ·sic \-zik, -sik\ adjective or noun.See amnesia defined for English-language learners. See amnesia defined for kids.ADVERTISEMENT. the selective overlooking or ignoring of events or acts that are not favorable or useful to one's purpose or position. â amÂ·neÂ·siÂ·ac \-zhÄ-Ëak, -zÄ-\ or amÂ·neÂ·sic \-zik, -sik\ adjective or noun. See amnesia defined for English-language learners. See amnesia defined for kids. ADVERTISEMENT.