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...
- Tendonitis
Term: tendontitis Literally meaning: ?inflammation of a tendon? Origin: Anc Greek?????/teino (=extend) > ?????/tanyo(=strain, stretch) > ??????/taenia(=band, ribon) +(-????)/-???? (=-itis, suffix meaning ?pertaining to? or ?inflammation?.)...
- Tendon
Term: tendon Literally meaning: ?tendon, sinew? Origin: Anc Greek?????/teino (=extend) > ?????/tanyo(=strain, stretch) > ??????/taenia(=band, ribon) Coined/History(?) Definition A tendon is the fibrous and flexible connective tissue...
- 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,...
Biology
angiotensinogen
Term: angiotensinogen
Literally meaning: ?that which creates/produces angiotensin?
Origin: Anc Greek
??????/aggio (=vessel, receptacle) > ?????/aggos(=tube)
+?????/teino (=extend) > ?????/tanyo(=strain, stretch, extend)
> ??????/taenia(=band, ribbon)
+?????/geno(= ?produce?, ?give birth to?, ?create?) >???????/genesis(=origin)
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 Indiapolis (USA) bh H Page and the other in Buenos Aires(Argentina) by Eduardo Braun Menendez. ?ccording their results, the Argentina group, demonstrated that renin could act on a protein present in the plasma in order to release angiotenin (which at first was named "hypertensin"). This proteic substrate was named angiotensinogen as was the actual precursor of the active principle.
Definition
Angiotensinogen is the precursor of angiotensin hormone. It is serum glycoprotein (a2-globulin) formed in liver and it is hydrolysed into angiotensin by renin.
- 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...
- Tendonitis
Term: tendontitis Literally meaning: ?inflammation of a tendon? Origin: Anc Greek?????/teino (=extend) > ?????/tanyo(=strain, stretch) > ??????/taenia(=band, ribon) +(-????)/-???? (=-itis, suffix meaning ?pertaining to? or ?inflammation?.)...
- Tendon
Term: tendon Literally meaning: ?tendon, sinew? Origin: Anc Greek?????/teino (=extend) > ?????/tanyo(=strain, stretch) > ??????/taenia(=band, ribon) Coined/History(?) Definition A tendon is the fibrous and flexible connective tissue...
- 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,...