Act 9 Respiratory Physiology in Man

Question 1

Title

Answer 1

Respiratoy Physiology in Man

Question 2

Major Functions of respiratory system (2)

Provide ___ to meet the energy production requirements of the body

maintain a suitable ___ by removing carbon dioxide (CO2)

Answer 2

Adequate oxygen supply

Acid-base status

Question 3

The process of air movement INTO the lungs

Answer 3

Ventilation

Question 4

Ventilation is a carefully contolled ___ with a wide range of response that enables the markers of gas exchange equality to be kept within a relatively small ___.

Answer 4

modality

physiologic range

Question 5

Markers of gas exchange adequacy (3)

Answer 5

PaO2

PaCO2

pH

Question 6

Passage of air into the lungs to supply the body with oxygen is ____

While the passage of air out of the lungs to expel carbon dioxide is called ___

Collectively this is ___

Answer 6

inhalation

exhalation

breathing

Question 7

Normal ventilation is an automatic, seemingly effortlesss ___ and ___ of the ___

Answer 7

inspiratory expansion

expiratory contraction

chest cage

Question 8

Normal breathing has a relatively ___ and ___ that constitute ___

Answer 8

constant rate

inspiratory volume

normal respiratory rhythm

Question 9

When factors affect the rhythm, certain abnormalities maight affect (3)

Answer 9

Rate

Rhythm

Effort of Breathing

Question 10

One breath cycle = ___ + ___

Answer 10

Inhalation
Exhalation

Question 11

Continued increase in respiration once exercise has ceased (____)

Answer 11

Oxygen debt

Question 12

A. SENSORY STIMULI AFFECTING RESPIRATORY MOVEMENTS

1. Will subject anticipate a stimulus when stimulated at set intervals? Why?
2. When a stimulus is skipped, will breathing rate change?
3. What was the effect?

Answer 12

1. Yes, Neural Adaptation
2. No, unless other factors like emotions
3. Respiratory rate increased

Question 13

B. ROLE OF CARBON DIOXIDE IN CONTROLLING RESPIRATORY RATE

Effect of HIGH Carbon Dioxide levels?

Increase in ___ and ___ of respiration

Answer 13

DEPTH and RATE of respiration

Question 14

B. ROLE OF CARBON DIOXIDE IN CONTROLLING RESPIRATORY RATE

Effect of HIGH Carbon Dioxide levels.

Normal Range of PCO2 is?

CO2 enters the ____ which forms ____ and this triggers the chemoreceptors

Answer 14

40 mmHg +- 3 mmHg

CEREBROSPINAL FLUID which forms CARBONIC ACID

Question 15

B. ROLE OF CARBON DIOXIDE IN CONTROLLING RESPIRATORY RATE

Physiological basis until PCO2 levels are restored?

Answer 15

Alveolar ventilation increased

5 mmHg x2

Question 16

B. ROLE OF CARBON DIOXIDE IN CONTROLLING RESPIRATORY RATE

Excess base, high blood pH

Answer 16

Alkalosis

Question 17

C. EFFECTS OF EXERCISE ON RESPIRATION

FEMALES VS MALES RESTING:

ATHLETIC MALE vs FEMALE _____

NON-ATHLETIC MALE vs FEMALE _____

Why?

Answer 17

Athletic Male LOWER respiratory movements

Non-Athletic HIGHER respiratory movements

Why?
Females smaller lung volume

Question 18

C. EFFECTS OF EXERCISE ON RESPIRATION

FEMALES VS MALES (OXYGEN DEBT)

Why do males have more after exercise?

Answer 18

More muscle mass

Question 19

C. EFFECTS OF EXERCISE ON RESPIRATION

ATHLETES VS NON-ATHLETES Resting

ATHLETES VS NON-ATHLETES (oxygen debt)

Answer 19

NON-ATHLETIC HIGHER breathing rate

ATHLETES LESS CHANGE

Question 20

D. BREATH HOLDING TIME

Controlled by Neurons on _____ of the ____ and ___

____ or too low pH due to carbon dioxide concentrations, excites ____

Answer 20

Reticular Formation or Medulla and Pons

Acidosis
Diaphragm