Question 1

The function of pulmonary ventilation is to

Accepted Answer

A) remove carbon dioxide from the blood. 
B) supply oxygen to the blood. 
C) maintain adequate alveolar ventilation. 
D) remove air from dead air space. 
E) prevent gas exchange in the bronchioles. 
A) remove carbon dioxide from the blood. 
B) supply oxygen to the blood. 
C) maintain adequate alveolar ventilation. 
D) remove air from dead air space. 
E) prevent gas exchange in the bronchioles.

Question 2

The airway that connects the larynx to the bronchial tree is the

Accepted Answer

A) trachea. 
B) bronchiole. 
C) laryngopharynx. 
D) alveolar duct. 
E) bronchus. 
A) trachea. 
B) bronchiole. 
C) laryngopharynx. 
D) alveolar duct. 
E) bronchus.

Question 3

At a PO₂ of 70 mm Hg and normal temperature and pH,hemoglobin is ________ percent saturated with oxygen.

Accepted Answer

A) 10 
B) 25 
C) 50 
D) 75 
E) more than 90 
A) 10 
B) 25 
C) 50 
D) 75 
E) more than 90

Question 4

What is one atmosphere of pressure?

Accepted Answer

A) 760 mm Hg 
B) 1000 mm Hg 
C) 105 mm Hg 
D) 45 mm Hg 
E) 650 mm Hg 
A) 760 mm Hg 
B) 1000 mm Hg 
C) 105 mm Hg 
D) 45 mm Hg 
E) 650 mm Hg

Question 5

The condition resulting from inadequate production of surfactant and the resultant collapse of alveoli is

Accepted Answer

A) respiratory distress syndrome. 
B) COPD. 
C) anoxia. 
D) pulmonary embolism. 
E) pneumothorax. 
A) respiratory distress syndrome. 
B) COPD. 
C) anoxia. 
D) pulmonary embolism. 
E) pneumothorax.

Question 6

Damage to the phrenic nerves would

Accepted Answer

A) increase respiratory rate. 
B) increase the tidal volume. 
C) force reliance on costal breathing. 
D) result in greater pressure differences between the lungs and the outside air. 
E) have little effect on ventilation. 
A) increase respiratory rate. 
B) increase the tidal volume. 
C) force reliance on costal breathing. 
D) result in greater pressure differences between the lungs and the outside air. 
E) have little effect on ventilation.

Question 7

As an astronaut is lifted into Earth's orbit,what is the first change to take place in response to the drop in cabin pressure?

Accepted Answer

A) increased hematocrit 
B) renal hypoxia 
C) increased alveolar ventilation rate 
D) decreased alveolar PO₂ 
E) decreased hemoglobin saturation 
A) increased hematocrit 
B) renal hypoxia 
C) increased alveolar ventilation rate 
D) decreased alveolar PO₂ 
E) decreased hemoglobin saturation

Question 8

For maximum loading of hemoglobin with oxygen at the lungs,the

Accepted Answer

A) PCO₂ should be high. 
B) pH should be slightly acidic. 
C) PO₂ should be about 70 mm Hg. 
D) DPG levels in the red blood cells should be high. 
E) PCO₂ should be low. 
A) PCO₂ should be high. 
B) pH should be slightly acidic. 
C) PO₂ should be about 70 mm Hg. 
D) DPG levels in the red blood cells should be high. 
E) PCO₂ should be low.

Question 9

The normal rate and depth of breathing is established by the ________ center.

Accepted Answer

A) apneustic 
B) pneumotaxic 
C) inspiratory 
D) expiratory 
E) ventral respiratory 
A) apneustic 
B) pneumotaxic 
C) inspiratory 
D) expiratory 
E) ventral respiratory

Question 10

Air entering the body is filtered,warmed,and humidified by the

Accepted Answer

A) upper respiratory tract. 
B) lower respiratory tract. 
C) lungs. 
D) alveoli. 
E) bronchioles. 
A) upper respiratory tract. 
B) lower respiratory tract. 
C) lungs. 
D) alveoli. 
E) bronchioles.

Question 11

Severing the sensory fibers from the lungs would result in all of the following,except

Accepted Answer

A) less inhibition of the inspiratory center during forced breathing. 
B) a drop in tidal volume. 
C) potential damage to the lungs due to overinflation. 
D) a disappearance of the Hering-Breuer reflexes. 
E) less stimulation of the expiratory center during forced breathing. 
A) less inhibition of the inspiratory center during forced breathing. 
B) a drop in tidal volume. 
C) potential damage to the lungs due to overinflation. 
D) a disappearance of the Hering-Breuer reflexes. 
E) less stimulation of the expiratory center during forced breathing.

Question 12

About 70% of carbon dioxide is transported in deoxygenated blood

Accepted Answer

A) as dissolved CO2 in the blood plasma. 
B) as bicarbonate ions bound to hemoglobin in red blood cells. 
C) combined with hemoglobin as carbaminohemoglobin. 
D) as bicarbonate ions in the blood plasma. 
E) as carbonic acid in the red blood cells. 
A) as dissolved CO2 in the blood plasma. 
B) as bicarbonate ions bound to hemoglobin in red blood cells. 
C) combined with hemoglobin as carbaminohemoglobin. 
D) as bicarbonate ions in the blood plasma. 
E) as carbonic acid in the red blood cells.

Question 13

Breathing that involves active inspiratory and expiratory movements is called

Accepted Answer

A) eupnea. 
B) hyperpnea. 
C) diaphragmatic breathing. 
D) costal breathing. 
E) shallow breathing. 
A) eupnea. 
B) hyperpnea. 
C) diaphragmatic breathing. 
D) costal breathing. 
E) shallow breathing.

Question 14

Ventilation performed by contraction of the external intercostals muscle is known as ________ breathing.

Accepted Answer

The answer of Ventilation performed by contraction of the external...

Question 15

The elastic cartilage that covers the opening to the larynx during swallowing is the

Accepted Answer

A) thyroid cartilage. 
B) cricoid cartilage. 
C) corniculate cartilage. 
D) cuneiform cartilage. 
E) epiglottis. 
A) thyroid cartilage. 
B) cricoid cartilage. 
C) corniculate cartilage. 
D) cuneiform cartilage. 
E) epiglottis.

Question 16

The ring-shaped cartilage just inferior to the thyroid cartilage is the ________ cartilage.

Accepted Answer

A) epiglottis 
B) cuneiform 
C) corniculate 
D) cricoid 
E) arytenoid 
A) epiglottis 
B) cuneiform 
C) corniculate 
D) cricoid 
E) arytenoid

Question 17

The entire array of protective mechanisms in the respiratory system is called the ________.

Accepted Answer

respirator

Question 18

The term hypercapnia refers to

Accepted Answer

A) the cessation of breathing. 
B) elevated PCO₂. 
C) elevated PO₂. 
D) an increase in pH. 
E) labored breathing. 
A) the cessation of breathing. 
B) elevated PCO₂. 
C) elevated PO₂. 
D) an increase in pH. 
E) labored breathing.

Question 19

A unique feature of the left lung is the ________.

Accepted Answer

The answer of A unique feature of the left lung...

Question 20

Moving air to and from exchange surfaces is termed ________.

Accepted Answer

The answer of Moving air to and from exchange surfaces...

Exam 23: The Respiratory System

The function of pulmonary ventilation is to

The airway that connects the larynx to the bronchial tree is the

At a PO₂ of 70 mm Hg and normal temperature and pH,hemoglobin is ________ percent saturated with oxygen.

What is one atmosphere of pressure?

The condition resulting from inadequate production of surfactant and the resultant collapse of alveoli is

Damage to the phrenic nerves would

As an astronaut is lifted into Earth's orbit,what is the first change to take place in response to the drop in cabin pressure?

For maximum loading of hemoglobin with oxygen at the lungs,the

The normal rate and depth of breathing is established by the ________ center.

Air entering the body is filtered,warmed,and humidified by the

Severing the sensory fibers from the lungs would result in all of the following,except

About 70% of carbon dioxide is transported in deoxygenated blood

Breathing that involves active inspiratory and expiratory movements is called

Ventilation performed by contraction of the external intercostals muscle is known as ________ breathing.

The elastic cartilage that covers the opening to the larynx during swallowing is the

The ring-shaped cartilage just inferior to the thyroid cartilage is the ________ cartilage.

The entire array of protective mechanisms in the respiratory system is called the ________.

The term hypercapnia refers to

A unique feature of the left lung is the ________.

Moving air to and from exchange surfaces is termed ________.

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

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