Biology
- Renin-angiotensin-aldosterone Made Simple
The body has many systems that work together in order to maintain homeostasis. The renin-angiotensin-aldosterone pathway is no different. It has 3 functions: (1) to maintain a proper blood pressure/blood flow, (2) to maintain the right concentration of...
- Angiolysin
Term: angiolysinLiterally meaning: ?that which breaks up vessels?Origin: Anc Greek??????/aggio (=vessel, receptacle) > ?????/aggos(=tube)+ ?????/lysis (=loosing) > ???/leo (break up, solve) à dissolution or a riotCoined/HistoryThe term was...
- Angio-, Angei-, Angi-,
Term: angio-, angei-, (before vowel)angi- Origin:. Anc Greek ???????/angeion (=vessel, receptacle) > ?????/aggos(=tube) Definition: combining forms that are used as prefix meaning a vessel 1. Blood or lymph vessel.2. Capsule of seeds in...
- Excretory Products And Their Elimination
Click here for PDFExcretion is the elimination of metabolic wastes like ammonia, urea, uric acid etc. from the tissues. It is 3 types: 1. Ammonotelism: Process of excretion of NH3.Ammonotelic animals: Aquatic invertebrates, bony fishes,...
- Don?t Eat The Yellow Snow
Biology concepts ? osmoregulation, tonicity, phytohormones, avian kidney, pinnieds, cetaceans African elephants are larger than asian elephants, but their urine production is similar. A 2007 study found that African elephants can differentiate family...
Biology
angiotensin
Term: angiotensin
Literally meaning: ?that which strains the vessel?
Origin: Anc Greek
??????/aggio (=vessel, receptacle) > ?????/aggos(=tube)
+?????/teino (=extend) > ?????/tanyo(=strain, stretch, extend)
> ??????/taenia(=band, ribbon)
Coined/History
Finnish physiologist Robert Tigerstedt and his assistant Per Bergman in 1858 observed that extracts from renal cortex of rabbits had a pressor effect upon intravenous injection. They named this substance renin. In 1958 the term ?angiotensin? was given to active end product of the renin-angiotensin system by two research groups on arterial pressure one in Inmdianapolis (USA) and the other in Buenos Aires(Argentine). The researchers (H Page and Eduardo Braun Menendez accordingly) agreed finally to name it angiotensin instead of words of ?hypertensin? or ?angiotonin?.
Definition
Angiotensin is a decapeptide hormone that increases blood pressure by vasoconstriction and by releasing aldosterone hormone from the adrenal cortex. It is formed from glycoprotein angiotensinogen by renin (renin-angiotensin system).
- Renin-angiotensin-aldosterone Made Simple
The body has many systems that work together in order to maintain homeostasis. The renin-angiotensin-aldosterone pathway is no different. It has 3 functions: (1) to maintain a proper blood pressure/blood flow, (2) to maintain the right concentration of...
- Angiolysin
Term: angiolysinLiterally meaning: ?that which breaks up vessels?Origin: Anc Greek??????/aggio (=vessel, receptacle) > ?????/aggos(=tube)+ ?????/lysis (=loosing) > ???/leo (break up, solve) à dissolution or a riotCoined/HistoryThe term was...
- Angio-, Angei-, Angi-,
Term: angio-, angei-, (before vowel)angi- Origin:. Anc Greek ???????/angeion (=vessel, receptacle) > ?????/aggos(=tube) Definition: combining forms that are used as prefix meaning a vessel 1. Blood or lymph vessel.2. Capsule of seeds in...
- Excretory Products And Their Elimination
Click here for PDFExcretion is the elimination of metabolic wastes like ammonia, urea, uric acid etc. from the tissues. It is 3 types: 1. Ammonotelism: Process of excretion of NH3.Ammonotelic animals: Aquatic invertebrates, bony fishes,...
- Don?t Eat The Yellow Snow
Biology concepts ? osmoregulation, tonicity, phytohormones, avian kidney, pinnieds, cetaceans African elephants are larger than asian elephants, but their urine production is similar. A 2007 study found that African elephants can differentiate family...