Question 1

The partial pressure of carbon dioxide is greatest in

Accepted Answer

A) venous blood. 
B) alveolar air. 
C) expired air. 
D) inspired air. 
E) arterial blood. 
A) venous blood. 
B) alveolar air. 
C) expired air. 
D) inspired air. 
E) arterial blood.

Question 2

The laryngeal cartilage not composed of hyaline cartilage is the

Accepted Answer

A) arytenoid. 
B) corniculate. 
C) cricoid. 
D) epiglottis. 
E) thyroid. 
A) arytenoid. 
B) corniculate. 
C) cricoid. 
D) epiglottis. 
E) thyroid.

Question 3

The apneustic centers of the pons

Accepted Answer

A) inhibit the pneumotaxic and inspiratory centers. 
B) provide stimulation to the inspiratory center. 
C) monitor blood gas levels. 
D) alter chemoreceptor sensitivity. 
E) generate the gasp reflex. 
A) inhibit the pneumotaxic and inspiratory centers. 
B) provide stimulation to the inspiratory center. 
C) monitor blood gas levels. 
D) alter chemoreceptor sensitivity. 
E) generate the gasp reflex.

Question 4

A SCUBA diver has been deep underwater and suddenly rises to the surface too fast. Why does the diver get decompression sickness?

Accepted Answer

A) Pressure decreases and carbon dioxide rushes into cells. 
B) Pressure changes too fast and the carbon dioxide in the blood forms bubbles. 
C) Pressure decreases too fast and nitrogen gas in the blood forms bubbles. 
D) The gas in the SCUBA tank had too much pressure and rapid ascent forces too much air into the blood. 
E) Pressure increases too fast and too much oxygen enters the blood and forms bubbles. 
A) Pressure decreases and carbon dioxide rushes into cells. 
B) Pressure changes too fast and the carbon dioxide in the blood forms bubbles. 
C) Pressure decreases too fast and nitrogen gas in the blood forms bubbles. 
D) The gas in the SCUBA tank had too much pressure and rapid ascent forces too much air into the blood. 
E) Pressure increases too fast and too much oxygen enters the blood and forms bubbles.

Question 5

If the volume of the lungs increases,what happens to the air pressure inside the lungs?

Accepted Answer

A) decreases 
B) increases and possibly damages the lungs 
C) increases twice the amount of the increase in volume 
D) remains constant 
E) increases 
A) decreases 
B) increases and possibly damages the lungs 
C) increases twice the amount of the increase in volume 
D) remains constant 
E) increases

Question 6

Higher brain centers that alter the activity of the respiratory centers include all of the following,except

Accepted Answer

A) cortical association areas. 
B) the precentral motor gyrus. 
C) the limbic system. 
D) the hypothalamus. 
E) Broca's center. 
A) cortical association areas. 
B) the precentral motor gyrus. 
C) the limbic system. 
D) the hypothalamus. 
E) Broca's center.

Question 7

Which of these age-based changes is false?

Accepted Answer

A) The lungs lose elastic tissue. 
B) The lung's compliance changes. 
C) Vital capacity increases. 
D) Respiratory muscles weaken. 
E) Costal cartilages become more flexible. 
A) The lungs lose elastic tissue. 
B) The lung's compliance changes. 
C) Vital capacity increases. 
D) Respiratory muscles weaken. 
E) Costal cartilages become more flexible.

Question 8

The adult human trachea is about ________ in diameter and contains ________ tracheal cartilages.

Accepted Answer

A) 1)0 cm; 15-20 
B) 1)0 cm; 10-15 
C) 2)5 cm; 15-20 
D) 2)5 cm; 40-50 
E) 4)5 cm; 60-80 
A) 1)0 cm; 15-20 
B) 1)0 cm; 10-15 
C) 2)5 cm; 15-20 
D) 2)5 cm; 40-50 
E) 4)5 cm; 60-80

Question 9

Which of the following can be calculated if the tidal volume and respiratory rate are known?

Accepted Answer

A) minute volume 
B) inspiratory reserve volume 
C) expiratory reserve volume 
D) anatomical dead space 
E) forced vital capacity 
A) minute volume 
B) inspiratory reserve volume 
C) expiratory reserve volume 
D) anatomical dead space 
E) forced vital capacity

Question 10

The percent of oxygen saturation of hemoglobin when the temperature is 38 degrees centigrade is

Accepted Answer

A) greater than the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade. 
B) less than the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade. 
C) equal to the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade. 
A) greater than the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade. 
B) less than the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade. 
C) equal to the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade.

Question 11

The number of lobes in the right lung is

Accepted Answer

A) greater than the number of lobes in the left lung. 
B) less than the number of lobes in the left lung. 
C) equal to the number of lobes in the left lung. 
A) greater than the number of lobes in the left lung. 
B) less than the number of lobes in the left lung. 
C) equal to the number of lobes in the left lung.

Question 12

The partial pressure of oxygen in arterial blood is approximately

Accepted Answer

A) 40 mm Hg. 
B) 45 mm Hg. 
C) 50 mm Hg. 
D) 70 mm Hg. 
E) 100 mm Hg. 
A) 40 mm Hg. 
B) 45 mm Hg. 
C) 50 mm Hg. 
D) 70 mm Hg. 
E) 100 mm Hg.

Question 13

The glottis is

Accepted Answer

A) the soft tissue that hangs off the end of the soft palate. 
B) a flap of elastic cartilage. 
C) the opening to the larynx. 
D) the opening to the pharynx. 
E) part of the hard palate. 
A) the soft tissue that hangs off the end of the soft palate. 
B) a flap of elastic cartilage. 
C) the opening to the larynx. 
D) the opening to the pharynx. 
E) part of the hard palate.

Exam 23: The Respiratory System

The partial pressure of carbon dioxide is greatest in

The laryngeal cartilage not composed of hyaline cartilage is the

The apneustic centers of the pons

A SCUBA diver has been deep underwater and suddenly rises to the surface too fast. Why does the diver get decompression sickness?

If the volume of the lungs increases,what happens to the air pressure inside the lungs?

Higher brain centers that alter the activity of the respiratory centers include all of the following,except

Which of these age-based changes is false?

The adult human trachea is about ________ in diameter and contains ________ tracheal cartilages.

Which of the following can be calculated if the tidal volume and respiratory rate are known?

The percent of oxygen saturation of hemoglobin when the temperature is 38 degrees centigrade is

The number of lobes in the right lung is

The partial pressure of oxygen in arterial blood is approximately

The glottis is

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 adult human trachea is about in diameter and contains tracheal cartilages.