Respiratory Revision

Question 1

The ________ zone includes the respiratory bronchioles, alveolar ducts,
alveolar sacs, and alveoli and is where gas exchange occurs.
A. respiratory
B. conducting
C. terminal
D. filtering
E. pulmonary

Answer 1

respiratory

Question 2

The correct pathway air flows through the respiratory system is ________.
A. nose, pharynx, larynx, trachea, main (primary) bronchi
B. nose, larynx, pharynx, trachea, main (primary) bronchi
C. nose, pharynx, trachea, larynx, main (primary) bronchi
D. nose, larynx, trachea, pharynx, main (primary) bronchi
E nose, pharynx, larynx, main (primary) bronchi, trachea

Answer 2

A

Question 3

The inspiratory muscles that contract so we can inspire air are the \_\_\_\_\_\_\_\_
and \_\_\_\_\_\_\_\_.
A. rectus abdominis; external obliques
B. diaphragm; external intercostals
C. trapezius; latissimus dorsi
D. diaphragm; external obliques
E. Diaphragm and internal obliques

Answer 3

B

Question 4

During an asthma attack, the narrowed airways affect pulmonary ventilation
because
A. It decrease secretion of surfactant
B. Increases secretion of surfactant
C. Decreases lung compliance
D. Increase airway resistance
E. Decreases airway resistance

Answer 4

D

Question 5

The total amount of exchangeable air is known as \_\_\_\_\_\_\_\_.
A.residual volume
B. inspiratory reserve volume (IRV)
C.tidal volume (TV)
D.vital capacity (VC)
E. expiratory reserve volume

Answer 5

D

Question 6

RMIT University SCHOOL OF HEALTH AND BIOMEDICAL SCIENCES 12
Functional residual capacity is
A. Inspiratory reserve volume and tidal volume
B. Expiratory reserve volume and tidal volume
C.Inspiratory reserve volume and residual volume
D. Expiratory reserve volume and residual volume
E. None of the above are correct

Answer 6

D

Question 7

Total lung capacity is
A. Increased in both restrictive lung disease and obstructive lung disease
B. Decreased in both restrictive and obstructive lung disease
C. Increased in obstructive lung disease and decreased in restrictive lung
disease
D. Decreases in obstructive lung disease and increased in restrictive lung
disease
E.None of the options are correct

Answer 7

C

Question 8

A patient with pneumonia that results in fluid in the lung will have decreased
gas exchange due to
A. Decrease in thickness of respiratory membrane
B. Increase in thickness of respiratory membrane
C. Decrease in surface area for gas exchange
D. Decrease in partial pressure differences
E. Decrease in gas solubility

Answer 8

B

Question 9

The law that explains why carbon dioxide can diffuse to equilibrium despite a
much smaller gradient than that for oxygen at the respiratory membrane is
A. Henry’s law
B. Boyle’s law
C. Dalton’s law
D. Fick’s law
E. Poiseuille’s law

Answer 9

A Henrys law

Question 10

What is boyles law

Answer 10

Pressure of gas varies inversely with its volume

P1 V1 = P2 V2

Question 11

what is henrys law

Answer 11

Movement of gasses is driven by partial pressures

Question 12

What is daltons law

Answer 12

Total gas pressure is the sum of its components

PO2 constitutes 21% of atmosphere and 21% of total atmosphere pressure

Question 13

What is ficks law

Answer 13

Rate of dispersion of gasses is directly proportional to the surface area and concentration difference, while being inversely proportional to thickness of membrane

Question 14

Which of the following would increase oxygen unloading in the muscles?
A. Decrease in temperature
B. Increase in pH
C. Increase in 2,3 biphosphoglycerate
D. Decrease in partial pressure of carbon dioxide
E.None of the above

Answer 14

C

Question 15

In order to return acidic blood pH to normal, breathing becomes deeper and
more rapid, a phenomenon known as ________.
A. hypoventilation
B. hyperventilation
C. apnea
D. dyspnea
E. hypercapnia

Answer 15

B

Question 16

The most important chemical stimulus leading to increased rate and depth of
breathing is \_\_\_\_\_\_\_\_.
A. decreased oxygen level in the blood
B. increased blood pH
C. increased carbon dioxide in the blood
D. increased hydrogen ion in the blood
E.decreased carbon dioxide in the blood

Answer 16

C

Question 17

Nerve impulses from __________ will results in expiration
A. The dorsal respiratory group
B. The ventral respiratory group
C. Broca’s centre
D. The pnuemotaxic center
E. The preoptic nucleus of the hypothalamus

Answer 17

B

Question 18

Boyle’s law forms the basis of
A. Ventilation.
B. Chemical regulation of breathing.
C. Oxygen transport in the blood.
D. Carbon dioxide transport in the blood.
E. External respiration

Answer 18

A

Question 19

Alexandra is breathing in a gas composition that contains an increased
concentration of CO2. How would the pulmonary arteries react to this and
why?
A. Constrict: increase blood flow through the alveoli
B. Dilate: increase blood flow through the alveoli
C. Constrict: decrease blood flow through the alveoli
D. Dilate: decrease blood flow through the alveoli
E. None of the above

Answer 19

C

Question 20

Premature babies frequently need to be put on a respirator to help them
breathe. Why does this become a necessary treatment for many premature
babies?

Answer 20

Premature babies lungs have not yet completely developed
Type II (surfactant) cells in particular are not present enough to support the babies life, thus they are put on respirators where they given positive pressure O2 and surfactant

Question 21

Cary deliberately hyperventilates for several minutes before diving into a
swimming pool. Shortly after he enters the water and begins swimming, he
blacks out and almost drowns. What caused this to happen?

Answer 21

Hyperventilation decreased alveolar PCO2, this removed his normal desire for O2 from the medulla and pons.
Muscle usage uses up O2 in the blood induces hypoxia
Lack of O2 reaches brain, kid passes out