Question 1

It is more efficient to increase alveolar ventilation by increasing tidal volume than by increasing respiration rate.

Accepted Answer

Increasing tidal volume is more efficient for enhancing alveolar ventilation because it reduces the proportion of each breath that is spent on dead space ventilation (air that does not reach the alveoli for gas exchange), thus more of the inhaled air participates in gas exchange. Increasing the respiration rate without increasing tidal volume raises the proportion of each breath that is dead space, making it less efficient for gas exchange.

Question 2

The cartilage around the trachea are arranged in (rings / C shapes), whereas that around the primary bronchi are arranged in (rings / C shapes).

Accepted Answer

The answer of The cartilage around the trachea are arranged...

Question 3

The muscles involved in resting inspiration include the diaphragm and the (external intercostals / internal intercostals), while forced inspiration adds the scalenes, (sternocleidomastoids / digastrics) and pectoralis minor.

Accepted Answer

The answer of The muscles involved in resting inspiration include...

Question 4

The generation of the pressure responsible for the movement of air follows Boyle's Law. Describe how Boyle's Law relates to pressure development in the lungs, and how that determines inspiration and expiration.

Accepted Answer

The answer of The generation of the pressure responsible for...

Question 5

(Ciliated cells / Goblet cells) are inhibited by smoking, which leads to the familiar "smoker's cough."

Accepted Answer

The answer of (Ciliated cells / Goblet cells) are inhibited...

Question 6

A decrease in the compliance of the lungs will cause the muscles of the lungs to work (harder / less) to expand the lungs to the same volume.

Accepted Answer

The answer of A decrease in the compliance of the...

Question 7

One of the basic tenets of physiology is that function of a system follows its structure. Describe the anatomy of the conducting zone of the respiratory tract, including how those structures contribute to the function of the
lungs.

Accepted Answer

The answer of One of the basic tenets of physiology...

Question 8

Pressure is the driving force for the movement of air into and out of the lungs. However, the development of pressure and the movement of air is modified by the compliance of the lungs. Describe how lung compliance can alter the movement of air into the lungs.

Accepted Answer

The answer of Pressure is the driving force for the...

Question 9

Pressure is the driving force for the movement of air into and out of the lungs. However, the development of pressure and the movement of air are modified by the resistance of the airways. Describe how airway resistance can alter the movement of air into the lungs, including asthma in the discussion.

Accepted Answer

The answer of Pressure is the driving force for the...

Question 10

As the volume of the lungs increases, intra -alveolar pressure (increases / decreases).

Accepted Answer

The answer of As the volume of the lungs increases,...

Question 11

An increase in sympathetic nervous activity to the smooth muscle cells of the bronchioles will result in a (bronchoconstriction / bronchodilation).

Accepted Answer

The answer of An increase in sympathetic nervous activity to...

Question 12

One of the basic tenets of physiology is that function of a system follows its structure. Describe the anatomy of the respiratory zone of the respiratory tract, including how that structure contributes to function.

Accepted Answer

The answer of One of the basic tenets of physiology...

Question 13

Under normal conditions, expiration is a(n) (active / passive) process.

Accepted Answer

The answer of Under normal conditions, expiration is a(n) (active...

Question 14

The (epiglottis / glottis) is a flap of tissue that prevents food from entering the larynx.

Accepted Answer

The answer of The (epiglottis / glottis) is a flap...

Question 15

Pressure is the driving force for the movement of air into and out of the lungs. Describe the structure of the thoracic cavity and how that structure is involved in creating the pressures that are important for the movement of air into the lungs.

Accepted Answer

The answer of Pressure is the driving force for the...

Quiz 16: The Respiratory System: Pulmonary Ventilation

It is more efficient to increase alveolar ventilation by increasing tidal volume than by increasing respiration rate.

The cartilage around the trachea are arranged in (rings / C shapes), whereas that around the primary bronchi are arranged in (rings / C shapes).

The muscles involved in resting inspiration include the diaphragm and the (external intercostals / internal intercostals), while forced inspiration adds the scalenes, (sternocleidomastoids / digastrics) and pectoralis minor.

The generation of the pressure responsible for the movement of air follows Boyle's Law. Describe how Boyle's Law relates to pressure development in the lungs, and how that determines inspiration and expiration.

(Ciliated cells / Goblet cells) are inhibited by smoking, which leads to the familiar "smoker's cough."

A decrease in the compliance of the lungs will cause the muscles of the lungs to work (harder / less) to expand the lungs to the same volume.

One of the basic tenets of physiology is that function of a system follows its structure. Describe the anatomy of the conducting zone of the respiratory tract, including how those structures contribute to the function of the lungs.

Pressure is the driving force for the movement of air into and out of the lungs. However, the development of pressure and the movement of air is modified by the compliance of the lungs. Describe how lung compliance can alter the movement of air into the lungs.

As the volume of the lungs increases, intra -alveolar pressure (increases / decreases).

An increase in sympathetic nervous activity to the smooth muscle cells of the bronchioles will result in a (bronchoconstriction / bronchodilation).

One of the basic tenets of physiology is that function of a system follows its structure. Describe the anatomy of the respiratory zone of the respiratory tract, including how that structure contributes to function.

Under normal conditions, expiration is a(n) (active / passive) process.

The (epiglottis / glottis) is a flap of tissue that prevents food from entering the larynx.

Pressure is the driving force for the movement of air into and out of the lungs. Describe the structure of the thoracic cavity and how that structure is involved in creating the pressures that are important for the movement of air into the lungs.