Question 1

The right lung is to ________ as the left lung is to ________.

Accepted Answer

A) three lobes; two lobes 
B) two lobes; two lobes 
C) two lobes; three lobes 
D) three lobes; three lobes 
E) four lobes; three lobes 
A) three lobes; two lobes 
B) two lobes; two lobes 
C) two lobes; three lobes 
D) three lobes; three lobes 
E) four lobes; three lobes A

Question 2

The partial pressure of carbon dioxide in the interstitial space of peripheral tissues is approximately

Accepted Answer

A) 35 mm Hg. 
B) 45 mm Hg. 
C) 55 mm Hg. 
D) 70 mm Hg. 
E) 100 mm Hg. 
A) 35 mm Hg. 
B) 45 mm Hg. 
C) 55 mm Hg. 
D) 70 mm Hg. 
E) 100 mm Hg. B

Question 3

Determination of blood gases includes testing an arterial sample for

Accepted Answer

A) pH. 
B) PO₂. 
C) PCO₂. 
D) PO₂ and PCO₂ only. 
E)  pH,PO₂,and PCO₂. 
A) pH. 
B) PO₂. 
C) PCO₂. 
D) PO₂ and PCO₂ only. 
E)  pH,PO₂,and PCO₂. E

Question 4

Respiratory function deteriorates as a result of pneumonia because inflammation

Accepted Answer

A) causes fluids to leak into the alveoli. 
B) causes respiratory bronchioles to swell and dilate. 
C) causes the lungs to leak air into the thorax. 
D) reduces movement of the epiglottis. 
E) reduces the size of the pleural cavity. 
A) causes fluids to leak into the alveoli. 
B) causes respiratory bronchioles to swell and dilate. 
C) causes the lungs to leak air into the thorax. 
D) reduces movement of the epiglottis. 
E) reduces the size of the pleural cavity.

Question 5

________ is the amount of air that moves into the respiratory system during a single respiratory cycle.

Accepted Answer

A) Residual volume 
B) Expiratory reserve volume 
C) Inspiratory reserve volume 
D) Tidal volume 
E) Inspiratory capacity 
A) Residual volume 
B) Expiratory reserve volume 
C) Inspiratory reserve volume 
D) Tidal volume 
E) Inspiratory capacity

Question 6

________ is the most common lethal inherited disease affecting individuals of Northern European descent.

Accepted Answer

A) MRSA 
B) Congestive heart failure 
C) Cystic fibrosis 
D) Myasthenia gravis 
E) Parkinson's disease 
A) MRSA 
B) Congestive heart failure 
C) Cystic fibrosis 
D) Myasthenia gravis 
E) Parkinson's disease

Question 7

The nasal cavity is separated from the oral cavity by the

Accepted Answer

A) hard palate. 
B) soft palate. 
C) cribriform plate. 
D) internal nares. 
E) pharyngeal septum. 
A) hard palate. 
B) soft palate. 
C) cribriform plate. 
D) internal nares. 
E) pharyngeal septum.

Question 8

The Hering-Breuer reflex

Accepted Answer

A) functions to increase ventilation with changes in blood pressure. 
B) alters pulmonary ventilation when the PO₂ changes. 
C) alters pulmonary ventilation when the PCO₂ changes. 
D) protects the lungs from damage due to overinflation. 
E) is an important aspect of normal,quiet breathing. 
A) functions to increase ventilation with changes in blood pressure. 
B) alters pulmonary ventilation when the PO₂ changes. 
C) alters pulmonary ventilation when the PCO₂ changes. 
D) protects the lungs from damage due to overinflation. 
E) is an important aspect of normal,quiet breathing.

Question 9

The nasopharynx is divided from the rest of the pharynx by the

Accepted Answer

A) hard palate. 
B) soft palate. 
C) cribriform plate. 
D) internal nares. 
E) pharyngeal septum. 
A) hard palate. 
B) soft palate. 
C) cribriform plate. 
D) internal nares. 
E) pharyngeal septum.

Question 10

________ = respiratory rate × (tidal volume - anatomic dead space).

Accepted Answer

A) Vital capacity 
B) Respiratory minute volume 
C) Pulmonary ventilation rate 
D) Alveolar ventilation rate 
E) External respiration rate 
A) Vital capacity 
B) Respiratory minute volume 
C) Pulmonary ventilation rate 
D) Alveolar ventilation rate 
E) External respiration rate

Question 11

The respiratory defense system is important because it

Accepted Answer

A) helps filter the air. 
B) helps warm the air. 
C) keeps out debris. 
D) keeps out pathogens. 
E) All of the answers are correct. 
A) helps filter the air. 
B) helps warm the air. 
C) keeps out debris. 
D) keeps out pathogens. 
E) All of the answers are correct.

Question 12

During quiet breathing,

Accepted Answer

A) only the internal intercostal muscles contract. 
B) inspiration involves muscular contractions and expiration is passive. 
C) inspiration is passive and expiration involves muscular contractions. 
D) inspiration and expiration are both passive. 
E) inspiration and expiration involve muscular contractions. 
A) only the internal intercostal muscles contract. 
B) inspiration involves muscular contractions and expiration is passive. 
C) inspiration is passive and expiration involves muscular contractions. 
D) inspiration and expiration are both passive. 
E) inspiration and expiration involve muscular contractions.

Question 13

All of the following provide chemoreceptor input to the respiratory centers of the medulla oblongata,except the

Accepted Answer

A) olfactory epithelium. 
B) medullary chemoreceptors. 
C) aortic body. 
D) carotid body. 
E) All of the answers are correct. 
A) olfactory epithelium. 
B) medullary chemoreceptors. 
C) aortic body. 
D) carotid body. 
E) All of the answers are correct.

Question 14

The normal respiratory rate of a resting adult ranges from ________ breaths each minute,or roughly one for every four heartbeats.

Accepted Answer

The answer of The normal respiratory rate of a resting...

Question 15

The unit of measurement for pressure preferred by many respiratory therapists is

Accepted Answer

A) mm Hg. 
B) torr. 
C) cm H₂O. 
D) psi. 
E) centigrade. 
A) mm Hg. 
B) torr. 
C) cm H₂O. 
D) psi. 
E) centigrade.

Question 16

External respiration involves the

Accepted Answer

A) movement of air into and out of the lungs. 
B) diffusion of gases between the alveoli and the circulating blood. 
C) exchange of dissolved gases between the blood and the interstitial fluid. 
D) binding of oxygen by hemoglobin. 
E) utilization of oxygen by tissues to support metabolism. 
A) movement of air into and out of the lungs. 
B) diffusion of gases between the alveoli and the circulating blood. 
C) exchange of dissolved gases between the blood and the interstitial fluid. 
D) binding of oxygen by hemoglobin. 
E) utilization of oxygen by tissues to support metabolism.

Question 17

Low pH alters hemoglobin structure so that oxygen binds less strongly to hemoglobin at low PO₂. This increases the effectiveness of

Accepted Answer

A) external respiration. 
B) internal respiration. 
C) carbon dioxide transport. 
D) hemoglobin synthesis. 
E) acid-base balance. 
A) external respiration. 
B) internal respiration. 
C) carbon dioxide transport. 
D) hemoglobin synthesis. 
E) acid-base balance.

Question 18

The actual sites of gas exchange within the lungs are

Accepted Answer

A) bronchioles. 
B) terminal bronchioles. 
C) pleural spaces. 
D) alveoli. 
E) interlobular septa. 
A) bronchioles. 
B) terminal bronchioles. 
C) pleural spaces. 
D) alveoli. 
E) interlobular septa.

Question 19

What is hypercapnia? How does it affect respiration? What are common causes?

Accepted Answer

Hypercapnia refers to a condition of ele

Question 20

The portion of the nasal cavity contained within the flexible tissues of the external nose is the

Accepted Answer

A) nasopharynx. 
B) vestibule. 
C) internal chamber. 
D) conchae. 
E) nasal septum. 
A) nasopharynx. 
B) vestibule. 
C) internal chamber. 
D) conchae. 
E) nasal septum.

Exam 23: The Respiratory System

The right lung is to ________ as the left lung is to ________.

The partial pressure of carbon dioxide in the interstitial space of peripheral tissues is approximately

Determination of blood gases includes testing an arterial sample for

Respiratory function deteriorates as a result of pneumonia because inflammation

________ is the amount of air that moves into the respiratory system during a single respiratory cycle.

________ is the most common lethal inherited disease affecting individuals of Northern European descent.

The nasal cavity is separated from the oral cavity by the

The Hering-Breuer reflex

The nasopharynx is divided from the rest of the pharynx by the

________ = respiratory rate × (tidal volume - anatomic dead space).

The respiratory defense system is important because it

During quiet breathing,

All of the following provide chemoreceptor input to the respiratory centers of the medulla oblongata,except the

The normal respiratory rate of a resting adult ranges from ________ breaths each minute,or roughly one for every four heartbeats.

The unit of measurement for pressure preferred by many respiratory therapists is

External respiration involves the

Low pH alters hemoglobin structure so that oxygen binds less strongly to hemoglobin at low PO₂. This increases the effectiveness of

The actual sites of gas exchange within the lungs are

What is hypercapnia? How does it affect respiration? What are common causes?

The portion of the nasal cavity contained within the flexible tissues of the external nose is the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Articulations

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Neural Integration I: Sensory Pathways and the Somatic Nervous System

Neural Integration Ii: the Autonomic Nervous System and

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters

The right lung is to as the left lung is to .