Transport Of Gases Flashcards
The delivery of oxygen to different parts of the body is made possible by?
Respiratory and cardiovascular system
Oxygen delivery to a particular tissue depends on?
Amount of oxygen going to the lungs
Adequacy of pulmonary-gaseous exchange
Blood to the tissues
Capacity of blood to carry oxygen depends on?
Amount of dissolved Oxygen
Amount of haemoglobin in blood
Affinity of Hb for oxygen
At rest, —— mol of O2/100ml is extracted.
How many ml and percent is in solution and in combination with Hb
- 5
- 17ml(3.8%)
- 33ml(96.2)
Two pigments that play important roles in transport of hemoglobin are?
Myoglobin and hemoglobin
Hemoglobin is a protein made up of —- subunits.
Heme is made up of?
Each of the four ——- can bind with oxygen reversibly
Reaction is ————- and iron stays in its —— state
——————— structure determines its affinity for oxygen
4 Porphyrin and 1 atom of ferrous iron Iron atoms Oxygenation, ferrous Quaternary
Oxygenation reaction begins with
Hb4+O2—- Hb4O2
Oxygen is transported in two forms what are they?
In solution and in combination with Hb
In arterial blood what’s the amount of oxygen transported in arterial blood solution and in combination with Hb?
- 29(1.5%)
19. 5(98.5)
Blood is 97%(19.8) saturated where?
Systemic circulation
Myoglobin is an iron containing pigment found in —————-
It binds two moles of oxygen per mole. T/F
Picks up oxygen from Hb in the blood(because it’s curve is to———- of Hb curve)
Releases O2 only at —- PO2 e.g in ————-
Facilitates diffusion of oxygen from —— to ——- where ——— reactions occur
L
Skeletal muscles F. It’s one Left Low, exercising molecules Blood, mitochondria, oxidative
What is bhors effect?
Decrease in oxygen affinity of Hb when Ph of blood falls
Oxyhemoglobin binds H+ more actively than deoxygenated Hb. T/F
F
In what instances do you have High temperature, high pco2, high DPG and decrease pH?
During exercise, in active tissues
What factors affect the concentration of 2,3-DPG?
Exercise, High altitude, Hormones, PH
