L03: The Gas Laws And VE

Question 1

For which processes do we breath

Answer 1

Excercise 
Metabolic 
Temperature regulation 
Expel particles
Endocrine 
Haematological (for RBC)
Water elimination 
Phonation

Question 2

What is the RQ equation

Answer 2

Vco2/ Vo2

Question 3

What does RQ depend on

Answer 3

The food you are having

Question 4

What is the conducting zone

Answer 4

A region where gas exchange does not occur

Question 5

What is the respiratory zone

Answer 5

A region where gas exchange occurs

Question 6

From which generation is the conducting zone

Answer 6

Generation 0-16

Question 7

From which generation is the respiratory zone

Answer 7

Generation 16-23

Question 8

Which structures of the lung are involved in the conducting zone

Answer 8

Trachea
Bronchi
Bronchioles
Terminal bronchioles

Question 9

Which structures of the lung are involved with the respiratory zone

Answer 9

Respiratory bronchioles
Alveolar ducts
Alveolar sacs

Question 10

What happens to the cross sectional area as you get more branches

Answer 10

Increases

Question 11

What happens to the speed of gas flow as the cross sectional area increases

Answer 11

Decreases

Question 12

At the respiratory zone how does gases move

Answer 12

Via diffusion

Question 13

What has to be present for gas diffusion to occur

Answer 13

Partial pressure gradient (high to low)

Question 14

What is a partial pressure

Answer 14

Concentration of a particular gas particles

Question 15

What is atmospheric pressure

Answer 15

Pressure exerted by the weight of all gas molecules above the point of measurement

Question 16

What happens to the atmospheric pressure as you go up the earth

Answer 16

Decreases

Question 17

Why is the atmospheric pressure less at high altitudes

Answer 17

The gravity is less so less weight is exerted by gas molecules

Question 18

What is the equation for atmospheric pressure

Answer 18

Atmospheric pressure= total of individual partial pressure

Question 19

What is the equation for partial pressure

Answer 19

Partial pressure= fractional concentration of gas in mixture * total pressure

Question 20

What is dead space

Answer 20

A region where no gas exchange takes place

Question 21

What are the 2 types of dead space

Answer 21

Anatomical

Alveolar

Question 22

What is the anatomical dead space

Answer 22

The conducting zone

Question 23

What is the alveolar dead space

Answer 23

Dead space in the respiratory zone caused by disease

Question 24

What is the total dead space known as

Answer 24

Physiological dead space

Question 25

What is the equation for physiological dead space

Answer 25

Physiological dead space= anatomical + alveolar dead space

Question 26

In a healthy individual what is the alveolar dead space

Answer 26

0

Question 27

What is v.E

Answer 27

Minute ventilation (the gas breathed out in one minute)

Question 28

What is the equation for V.E

Answer 28

V.E= VT * f

Question 29

What is VT

Answer 29

Tidal volume (volume of normal breath)

Question 30

What is alveolar ventilation (V.A)

Answer 30

Useful gas that reaches the respiratory zone and passes the anatomical dead space

Question 31

What is the equation for V.A

Answer 31

V.A= (VT-VD) * F

Question 32

Why are slow deep breaths efficient

Answer 32

More gas passes the dead space and reaches the alveoli to become used