The term anoxia means a total depletion in the level of oxygen, an extreme form of hypoxia or “low oxygen”.
The terms anoxia and hypoxia are used in various contexts:
Hypoxia (environmental), low oxygen conditions.
Hypoxia (medical), when the body or a region of the body is deprived of adequate oxygen supply Cerebral anoxia, when the brain is completely deprived of oxygen, an extreme form of cerebral hypoxia.
a) anoxemic anoxia severely affects globus pallidus
b) anemic anoxia affects the caudate nucleus and putamen