Angiotensin: A family of peptides that constrict blood vessels. Narrowing the diameter of the blood vessels causes blood pressure to rise.
- Angiotensin converting enzyme 2
Angiotensin converting enzyme 2: An enzyme, abbreviated ACE2, that is an essential regulator of heart function. It may also be involved in the embryonic development of the heart. ACE2 was discovered in 2000. The gene for it has been mapped to the X chromosome (band Xp22).
- Angle-closure glaucoma
Angle-closure glaucoma: This condition can be acute or chronic. It consists of increased pressure in the front chamber (anterior chamber) of the eye due to sudden (acute) or slowly progressive (chronic) blockage of the normal circulation of fluid within the eye. The block takes place at the angle of the anterior chamber formed by its […]
- Angle-closure glaucoma, acute
Angle-closure glaucoma, acute: Increased pressure in the front chamber (anterior chamber) of the eye due to sudden (acute) blockage of the normal circulation of fluid within the eye. The block takes place at the angle of the anterior chamber formed by its junction of the cornea with the iris. This angle can be seen by […]
Angry: Pertaining to anger, an emotional state that may range in intensity from mild irritation to intense fury and rage. Anger may have physical effects such as raising the heart rate, blood pressure and the levels of adrenaline and noradrenaline.
Loss of the capacity to experience pleasure. The inability to gain pleasure from normally pleasurable experiences. Anhedonia is a core clinical feature of depression, schizophrenia, and some other mental illnesses. An anhedonic mother finds no joy from playing with her baby. An anhedonic football fan is not excited when his team wins. An anhedonic teenager […]