Lecture -1

Question 0

Pressure:
_____ theory of gases: pressure ( of a gas) is the ____ per ____ ____ exerted by the impact of gas molecules colliding with the walls of the container

Usually measure relative to ________ pressure

Answer 0

Pressure:
_____ theory of gases: pressure ( of a gas) is the ____ per ____ ____ exerted by the impact of gas molecules colliding with the walls of the container

Usually measure relative to ________ pressure

Question 1

Respiration is the process by which _____ from the atmosphere is _______ to cells of the body and enables them to produce _____ by _______ reactions and the byproduct ______ ______ Is removed to the atmosphere

Answer 1

Respiration is the process by which oxygen from the atmosphere is delivered to cells of the body and enables them to produce energy by oxidative reactions and the byproduct carbon dioxide Is removed to the atmosphere

Question 2

What are the functions of the respiratory system? 6 points

Answer 2

Gas exchange 
Metabolic activity 
Speech 
Filtration 
Humidification
Thermoregulation

Question 3

What is in the conducting zone?

Answer 3

Trachea
Bronchi
Bronchioles

Question 4

What is in the respiratory zone?

Answer 4

Respiratory bronchioles
Alveolar ducts
Alveolar sacs

Question 5

What does the respiratory tract contain?

Where does it start from?

Answer 5

Trachea down = respiratory tract 
Trachea 
Bronchi 
Bronchioles 
Respiratory bronchioles 
Alveolar ducts 
Alveolar sacs

Question 6

Bronchi -
Primary bronchus

Secondary (_____) bronchus

Tertiary (_______) bronchus

Answer 6

Bronchi -
Primary bronchus

Secondary (lobar) bronchus

Tertiary (segmental) bronchus

Question 7

The oxygen concentration in the lungs is _____ than in the blood creating an O2 _______ from lung to blood.
O2 conc is _____ in the tissues so moves ___ of blood.

Answer 7

The oxygen concentration in the lungs is higher than in the blood creating an O2 GRADIENT from lung to blood.
O2 conc is lower in the tissues so moves out of blood.

Question 8

PA =

Answer 8

Partial pressure of alveolar oxygen

Question 9

Pa=

Answer 9

Partial pressure of arteriole oxygen (blood supply)

Question 10

What is the A-a gradient ? Or ‘Difference’

Answer 10

Is the difference between the partial pressure of ALVEOLAR oxygen (PA) and the partial pressure of ARTERIOLE oxygen (Pa)

Question 11

Alveolar dead space is? When could it occur?

Answer 11

Damaged alveolar (could occur with age/smoking) or areas which don’t have a blood supply

Question 12

Pressure:
_____ theory of gases: pressure ( of a gas) is the ____ per ____ ____ exerted by the impact of gas molecules colliding with the walls of the container

Usually measure relative to ________ pressure

Answer 12

Pressure:
Kinetic theory of gases: pressure ( of a gas) is the force per unit area exerted by the impact of gas molecules colliding with the walls of the container

Usually measure relative to atmospheric pressure

Question 13

-Ve numbers = ____ than atmospheric pressure

Answer 13

-ve numbers = less than atmospheric pressure

Question 14

Sea level atmospheric pressure : _____ mmHg

Answer 14

Sea level atmospheric pressure : 760 mmHg

Question 15

Everest atmospheric pressure : ~____ mmHg

Answer 15

Everest atmospheric pressure: ~250mmHg

Question 16

A pressure of 1 torr is approx to 1 _____

Answer 16

mmHg

Question 17

DALTONS law :
Partial pressures (P) 
To get the total partial pressure = \_\_\_+\_\_\_ + \_\_\_ 

For DRY atmospheric air
Pbaro = ___ + ___ + ____

Answer 17

DALTONS law :
Partial pressures (P) 
To get the total partial pressure = Pa + Pb + Pc

For DRY atmospheric air
Pbaro = PN2+ Po2 + Pco2

Question 18

KNOW:
F = \_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_ of air at sea level
FN2=
FO2=
FCO2=
FH2O=

Answer 18

KNOW:
F = fractional compositon of air at sea level
FN2= 0.72
FO2= 0.21
FCO2= ~ 0.0003
FH2O= ~ 0.005