Exam 2

Question 1

What is the difference between pulmonary and cellular Respiration

Answer 1

Pulmonary Respiration: Ventilation (Exchange of O2 and CO2 in the Lungs)
Cellular respiration: O2 utilization and CO2 production by the tissues

Question 2

What is anatomical deadspace

Answer 2

Portion of space in the lungs that does not particpate in gas exchange

Question 3

What is alveolar ventilation

Answer 3

Where gas exchange occurs in the lungs

Question 4

Ventilation formula

Answer 4

VT (tidal volune) x Breathing frequency

Question 5

Understand what happens to the airway during asthma

Answer 5

Bronchioles constrict

Question 6

Muscles of inspiration

Answer 6

Scalenes, Diaphragm, external intercostals, parasternal intercostals, diaphragm

Question 7

Muscles of expiration

Answer 7

Scalenes, Diaphragm, external intercostals, parasternal intercostals, diaphragm

Question 8

Boyle’s gas law

Answer 8

P1V1 = P2V2 (Inhalation = lung volume increasing, pressure decreases)

Question 9

Airflow formula

Answer 9

Difference in pressure

Question 10

Dalton’s law

Answer 10

Sum of partial pressure = total ATM

Question 11

Variables of Fick’s law of diffusion

Answer 11

thickness, diffusion coefficient, change in pressure

Question 12

12. Know the values for PaO2, PaCO2, PvO2, and PvCO2 at rest

Answer 12

PaO2: 100 MmHg PaCO2: 40 PvO2: 40 PvCo2 46

Question 13

Ideal V/Q Ratio

Answer 13

Ideal=1 Acceptablie= 0.5 - 1.5

Question 14

Why is blood flow high at the base of the lung when standing

Answer 14

Gravity pulling blood down

Question 15

How does light-to-moderate exercise / heavy exercise affect V/Q ratio

Answer 15

LTM: balanced Heavy: inequalities (higher)

Question 16

Know how many molecules of O2 Hb binds to

Answer 16

4 molecules of oxygen

Question 17

Know how many mL of O2 are carried per gram of Hb

Answer 17

1.34 mL

Question 18

Understand the difference between oxyHb and deoxyHb

Answer 18

Oxyhemoglobin carries oxygen, Deoxyglobin releases oxygen

Question 19

Understand positive cooperativity and how it affects the shape of the oxyHb dissociation curve

Answer 19

S- curve (sigmoidal)

Question 20

Understand the PO2 at which the oxyHb dissociate curve is steep and at which it begins to plateau and why that is significant for oxygen delivery

Answer 20

40 (plateau)