The Specialties of Physiology â¢ Cell physiology â¢ Special physiology â¢ Systemic physiology â¢ Pathological physiology Levels of Organization â¢ Integumentary system â¢ Nervous system â¢ Skeletal system â¢ Endocrine system â¢ Muscular system â¢ Cardiovascular system
Definition of manic for English Language Learners. : 1  having or relating to a mental illness that causes someone to become very excited or emotional. : 2  very excited, energetic, or emotional.
Bipolar disorder, also known as manic depression, is a mental illness that brings severe high and low moods and changes in sleep, energy, thinking, and behavior. People who have bipolar disorder can have periods in which they feel overly happy and energized and other periods of feeling very sad, hopeless, and sluggish. In between those periods, they usually feel normal. You can think of the highs and the lows as two poles of mood, which is why it's called bipolar disorder.