Exchange of gas

Question 1

Respiration

What is Px.

Answer 1

“P” represents the partial pressure and “x” represent the gas.

Air pressure is the sum of partial pressures of the gases.

NOTE: Gases diffuse from areas where it’s partial pressure is higher to areas where it’s partial pressure is lower in the body.

Question 2

WHat causes increase CO2

Answer 2

Pain
Temp
Airway injury
CO2

Question 3

Respiration

What is the gasses from highest concentration to lowest in the air in the atmosphere?

Bonus if you know the amount

Answer 3

a) Nitrogen (PN2 597.4mmHg)
(b) Oxygen (PO2 158.8mmHg)
(c) Water vapor (PH20 3.0mmhg)
(d) Carbon dioxide (PCO2 0.3mmHg)
(e) Others (Pother gases 0.5mmHg)

Question 4

Look at it know it be it

Answer 4

Internal and External Respiration

Question 5

Respiration

-is the diffusion of O2 from air in the alveoli of the lungs to blood in the pulmonary capillaries and the diffusion of CO2 in the opposite direction. Occurs only in the lungs.

-Are respiration of the lungs converts’ deoxygenated (low-oxygen) blood that comes from the right side of the heart to oxygenated (high-oxygen) blood that returns to the left side of the heart.

Answer 5

External Respiration: Pulmonary Gas Exchange

Question 6

Respiration

1) Blood picks up O2 from alveolar air and unloads CO2.

2) Commonly called an “exchange” but each gas moves based on its partial pressure, moving from higher to lower.

Answer 6

External Respiration:

Question 7

Respiration

A highly important factor in External Respiration: Pulmonary Gas Exchange

Any disease process that affecting this factor will decreases the rate of gas exchange.

Answer 7

Surface Area

Question 8

Respiration

The partial pressure of oxygen (PO2) in alveolar air is 105 mmHg (at rest). The PO2 in the pulmonary capillaries is 40 mmHg.

No Answer: Fact

Answer 8

This allows diffusion into the capillaries

Question 9

Respiration

Blood returning to the heart via the pulmonary veins, has a PO2 of what amount?

Answer 9

about 100 mmHg

Question 10

CO2 in the capilaries

Answer 10

40 mmHg

Question 11

Respiration

PCO2 of deoxygenated blood is 45 mmHg (at rest) compared to alveolar air – PCO2 40 mmHg.

Exhalation keeps the alveolar pressure of PCO2 at 40 mmHg.

Oxygenated blood returning to the left side of the heart has a PCO2 of 40 mmHg.

No Answer: Fact

Answer 11

Thus, CO2 diffuses from an area of higher pressure (deoxygenated blood in a pulmonary capillary) to an area of lower pressure (alveoli).

Question 12

Respiration

The exchange of O2 and CO2
between systemic capillaries and tissue throughout the body.

Answer 12

Internal Respiration or System Gas Exchange:

Question 13

Respiration

PO2 of blood in systemic capillaries is higher (100 mmHg) than PO2 in tissue cells (40 mmHg), at rest. Partial Pressure is lower due to cell’s use of O2 to produce ATP.

No Answer: Fact

Answer 13

Oxygen diffuses out of capillaries into tissue cells and systemic capillary blood PO2 decreases.

Question 14

Tissue cells constantly produce CO2

. 1) The PCO2 of cells is 45 mmHg, at rest. This is higher than systemic capillaries PCO2 (40 mmHg).

No Answer: Fact

Answer 14

CO2, thus, diffuses out of tissue cells, through interstitial fluid into systemic capillaries until PCO2 in the blood increases.

Question 15

Oxygen doesn’t dissolve easily in water only what percent of O2 is contained in blood plasma.

Answer 15

1.5%

Question 16

What percent of oxygen is bound to hemoglobin hgb in RBC’s.

Answer 16

98.5%

Question 17

Heme in hemoglobin contains contains how many ions of iron?

Each binds a molecule of O2.

Answer 17

4

Question 18

wtf is this

Hb + O2 > Hb-O2 (oxyhemoglobin).

Answer 18

Oxygen and deoxyhemoglobin (Hb) bind in a reversible reaction to form Oxyhemoglobin (Hb):

Question 19

When blood PO2 is low, red blood cells do this to oxygen?

Answer 19

hemoglobin releases O2.

-diffuses from blood plasma through interstitial fluid in to the tissue cells.

Question 20

Other factors influence O2 release from hemoglobin: 3 of them

Answer 20

Carbon Dioxide
Acidity
Temperature

Question 21

Approximately what percent of CO2 dissolves in blood plasma.

Answer 21

7%

Question 22

Approximately what percent of CO2 is bound to amino acids:

Answer 22

23%

Question 23

Amino acids is the most prevalent protein is hemoglobin inside the RBC’s. CO2 binds the hemoglobin forming what?

Answer 23

Carbaminohemoglobin (Hb-CO2)

Question 24

The greatest percentage of CO2, 70%, is transported in the plasma as

Answer 24

Bicarbonate ions (HCO3).

Question 25

Answer 25

Transport of Oxygen and Carbon Dioxide

Question 26

What percent is coming in and being used 02?

Answer 26

75% diaphram
25% intercostal

70% is utilized
30% is in dead space