1 / 4

Transport of CO 2 & O 2 pg 386

Transport of CO 2 & O 2 pg 386. 2 types of blood: 1. Arterial (O 2 ) pulmonary vein  heartaortaarteries 2. Venous (CO 2 ) tissuevenuolesvena cavaheart  pulmonary artery Gas exchange occurs by: DIFFUSION Problem: O 2 & CO 2 can’t diffuse fast in blood

leiko
Download Presentation

Transport of CO 2 & O 2 pg 386

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Transport of CO2 & O2 pg 386 2 types of blood: 1. Arterial (O2) pulmonary vein heartaortaarteries 2. Venous (CO2)tissuevenuolesvenacavaheart pulmonary artery Gas exchange occurs by: DIFFUSION Problem: O2 & CO2 can’t diffuse fast in blood Solution: Hemoglobin (Hb) found in RBC

  2. Transport of CO2 (3methods) • 8% CO2 (dissolved) + H2O free transport • 25% CO2 + Hb HbCO2carboxyhemoglobin • 67% CO2 + H2O (RBC)H2CO3 (carbonic acid) • H2CO3breaks apart H+ + HCo3-bicarbonate ion • HCO- moves out of RBC as Cl- moves in called: • Chloride Shift • H+ bonds with free HbHHb this stabilizes pH of blood

  3. Transport of O2 (2 methods) • 2% O2 dissolved with H2OFree Transport • 98% O2 + Hb HbO2Oxyhemoglobin

  4. Problems pg386 Hyperventilation: lowers CO2 level in blood, lowers blood pressure less blood to brain may cause apnea Hypoxia: inadequate O2 supply 3 types 1. Hypoxemic: low O2 in blood cause: slowed breathing center, drowning 2. Anemic: low Hb concentration cause: CO poisoning 3. Stagnant: low O2 in cells cause: cardiac failure, shock, embolus

More Related