Define on the whole. on the whole synonyms, on the whole pronunciation, on the whole translation, English dictionary definition of on the whole. adj. 1. a. Containing all components; complete: the whole series of novels. b. Not divided or disjoined; in one unit: a whole loaf. c. Constituting the full...
The common hippopotamus (Hippopotamus amphibius), or hippo, is a large, mostly herbivorous mammal in sub-Saharan Africa, and one of only two extant species in the family Hippopotamidae, the other being the pygmy hippopotamus (Choeropsis liberiensis or Hexaprotodon liberiensis). The name comes from the ancient Greek for river horse (á¼±ÏÏÎ¿ÏÏÏÎ±Î¼Î¿Ï).
The hippocampus is a small area of the brain that is located in the medial temporal lobe of the brain. It is comprised of two halves, one which resides on each hemisphere of the brain. It is generally agreed that the main functionality of the hippocampus encompasses the creation of new memories, the formation of long term memory, and spatial navigation. Inside the hippocampus resides the amygdala. The amygdala is a part of the brain which has previously been linked with depression. Studies in the past have suggested a direct relationship between a shrinkage in the hippocampus and depression, but the sample size of previous studies hasnât been large enough to yield definitive results.