active hyperemia

(redirected from Functional hyperemia)
Also found in: Wikipedia.

hyperemia

 [hi″per-e´me-ah]
an excess of blood in a part; called also engorgement. adj., adj hypere´mic.
active hyperemia (arterial hyperemia) that due to local or general relaxation of arterioles.
leptomeningeal hyperemia congestion of the pia-arachnoid.
passive hyperemia that due to obstruction of flow of blood from the area.
reactive hyperemia that due to increase in blood flow after its temporary interruption.
venous hyperemia passive hyperemia.

ac·tive hy·per·e·mi·a

hyperemia resulting from an increased afflux of arterial blood into dilated capillaries.

active hyperemia

Etymology: L, activus + Gk, hyper, excessive, haima, blood
the increased flow of blood into a particular body part, caused by an increase in vasoactive metabolites. It is associated with increased metabolism.

ac·tive hy·per·e·mi·a

(ak'tiv hī'pĕr-ē'mē-ă)
Hyperemia due to an increased afflux of arterial blood into dilated capillaries.
Synonym(s): fluxionary hyperemia, active hyperaemia.

ac·tive hy·per·e·mi·a

(ak'tiv hī'pĕr-ē'mē-ă)
Hyperemia due to an increased afflux of arterial blood into dilated capillaries.
Synonym(s): fluxionary hyperemia, active hyperaemia.
References in periodicals archive ?
assembles 15 chapters written by contributors from the US, Europe, and Asia specializing in functional magnetic resonance, electrophysiology, and optical imaging methods who explain the basic principles of their techniques and how they are used in brain imaging to understand functions such as neural activity, energy metabolism, blood flow, the structures of tissues, and functional hyperemia.

Full browser ?