CH 23 Part 2

Question 1

What is quiet breathing?

Answer 1

Rhythmic breathing that occurs at rest

Question 2

Skeletal muscles contract and relax changing the?

Answer 2

Thorax volume

Question 3

What muscles contract quiet breathing?***

Answer 3

1. Diaphragm

2. External intercostals

Question 4

As volume increases pressure will?***

Answer 4

Decrease

Question 5

As volume decreases pressure will?***

Answer 5

Increase

Question 6

What is the pressure of atmospheric air?*** (1atm)

Answer 6

760mmHG

Question 7

An increase of altitude will ____ pressure?***

Answer 7

Lower

Question 8

Air moves from ___ pressure to ___ pressure.

Answer 8

High, low

Question 9

If atm pressure is 760mmHg and intrapulmonary pressure is 759mmHg how are you breathing?***

Answer 9

Breathing in

Question 10

If atm pressure is 760mmHg and intrapulmonary pressure is 761mmHg how are you breathing?***

Answer 10

Breathing out

Question 11

If atm pressure is 760mmHg and intrapulmonary pressure is 760mmHg how are you breathing?***

Answer 11

Not breathing

Question 12

What is resistance?

Answer 12

Greater difficulty moving air

Question 13

How can resistance be altered?

Answer 13

1. Change in chest wall and lung elasticity
2. Change in bronchiole diameter
3. Collapse of alveoli

Question 14

What causes bronchodilation?

Answer 14

1. Sympathetic stimulation

2. Epinephrine

Question 15

What is partial pressure?

Answer 15

Pressure exerted by each gas within a mixture of gases

Question 16

What are gases associated with partial pressure?

Answer 16

1. H20
2. O2
3. N2
4. CO2
   (HONC)

Question 17

Daltons law definition?***

Answer 17

Total pressure in a mixtures of gasses is equal to the sum of the individuals partial pressure

Question 18

Look at slide 37

Answer 18

Look at slide 37