BIOL 2420 Lecture Notes - Lecture 17: Carbonic Anhydrase, Peripheral Chemoreceptors, Central Chemoreceptors
9 Mar 2018
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Unit 2: respiratory system (f: carbon dioxide transport, co2 is the second of the 2 gases that must be eliminated from the body, co2 is moved from inside the body to outside the body, in blood: It"s more polar than o2 (better soluble in aqueous more than o2: 5% of co2 transferred from tissues to the lungs is transferred in the plasma, it can be bound to proteins, as bicarbonate (hco3-, this is approx. 90: plasma rbc carbonic anhydrase proton + hco3, hco3-is removed from the cell because of the chloride shift (to maintain/ re- establish equilibrium so a greater amount of co2 can enter the cell) Glomus cells are in the carotid and aortic regions (they"re in direct contact with arteriolar blood) It"s activated when blood plasma po2 was 60mmhg (plateau phase so hb is still saturated) Releases neurotransmitters (these interact on the medulla)
