deoxygenated blood

deoxygenated blood
中文係缺氧血

其實佢唔係指佢裏面無氧氣=.=
係指裏面無足夠既氧
即係LOW OXYGEN CONTENT .

DEOXYGENATED BLOOD係邊度搵到哩...
BLOOD 經過LUNG
咁裏面D HAEMOGLOBIN 就會CARRY OXYGEN
咁紅血球D HAEMOGLOBIN 會隨著
血流放D OXYGEN 去d tissue 度
咁換返D CARBON DIOXIDE 入尼 (co2係來自tissue)
佢uptake左 co2
咁咪少左oxygen
哩d haemoglobin lack of combination of O2

咁經過身體~~d 血無咩氧氣
就叫做
deoxygenated blood

Oxygen 係靠紅血球入面既 haemoglobin , 血紅素運送既 ~


oxygenated blood 係指經過肺之後既血 , oxygen 會結合 haemoglobin ,

成為 oxyhaemoglobin , 並送往全身


deoxygenated blood 係指經過身體各部分的血 ,

oxyhaemoglobin 會分開成 oxygen 同 haemoglobin ,

oxygen 會供給器官作呼吸作用

而 deoxygenated blood 最後會流回心臟 ,

再 pump 到肺部補充 oxygen ,


即是話 , deoxygenated blood 不含 oxygen

Deoxygenation is a chemical reaction involving the removal of molecular oxygen (O2) from a reaction mixture or solvent, or the removal of oxygen atoms from a molecule.
Classic representatives of deoxygenation are:

the replacement of a hydroxyl group by hydrogen (A-OH → A-H) in the Barton-McCombie deoxygenation
the replacement of an oxo group by two hydrogen atoms (A=O → A) in the Wolff-Kishner reduction
A chemical reagent for the deoxygenation of many sulfur and nitrogen oxo compounds is the trifluoroacetic anhydride / sodium iodide combination [1] for example in the deoxygenation of the sulfoxide diphenylsulfoxide to the sulfide diphenylsulfide:

圖片參考：http://upload.wikimedia.org/wikipedia/en/thumb/f/f5/SulfoxideDeoxigenation.png/400px-SulfoxideDeoxigenation.png

The reaction mechanism is based on activation of the sulfoxide by a trifluoroacetyl group and oxidation of iodine. Iodine is formed quantitatively in this reaction and therefore the reagent is used for the analytical detection of many oxo compounds.

圖片參考：http://upload.wikimedia.org/wikipedia/en/thumb/e/e6/TFAA_deoxigenationMechanism.png/400px-TFAA_deoxigenationMechanism.png


2008-05-15 22:12:58 補充：
No oxygen is inside the blood.