Question 1

The hilum of the lung

Accepted Answer

A)   is an indented area through which the bronchi, pulmonary vessels, lymphatic vessels, and nerves pass.
B)   is the point of exit of exhaled air.
C)   is the point of entrance for inhaled air.
D)   is an elevated area through which the trachea, pulmonary vessels, and nerves pass.
E)   serves to anchor all pulmonary structures to the mediastinum.F) A) and E)
G) D) and E)

Question 2

Also known as the pneumotaxic center, this area allows for smooth transitions between inspiration and expiration.

Accepted Answer

A)   Dorsal respiratory group
B)   Ventral respiratory group
C)   Pontine respiratory center
D)   Medullary respiratory center
E)   Carotid bodyF) A) and B)
G) C) and E)

Question 3

The male voice tends to be in a lower range than a female's voice because men have

Accepted Answer

A)   more taut vestibular folds.
B)   more air to push through the rima glottidis.
C)   wider arytenoid cartilages.
D)   shorter and fatter vestibular ligaments.
E)   longer and thicker vocal folds.F) C) and D)
G) A) and D)

Question 4

Which answer places the following events in proper order for pulmonary ventilation?
A: Thoracic cavity volume changes.
B: Brainstem nuclei stimulate skeletal muscles to contract.
C: Air flows down its pressure gradient.
D: Dimensional changes in the thorax lead to pressure changes within the lung.

Accepted Answer

A)   b, a, d, c
B)   d, c, b, a
C)   b, d, c, a
D)   a, c, d, b
E)   c, a, d, bF) All of the above
G) B) and E)

Question 5

In general, respiratory zone structures are lined with a thicker mucosa than conducting zone structures.

Accepted Answer

A) True 
 B)False

Question 6

When someone begins to hyperventilate, the increased movements of their respiratory muscles ________ venous return of blood to the heart.

Accepted Answer

A)   increase
B)   decreaseC) A) and B)
D) undefined

Question 7

Gross & microscopic anatomy of the respiratory tract & related organs. 
-In these views of the trachea, what type of tissue does number 3 indicate?

Accepted Answer

A)   Thyroid cartilage
B)   Trachealis muscle
C)   Tracheal cartilage
D)   Annular ligament
E)   Cricoid cartilageF) C) and E)
G) B) and E)

Question 8

Depression of the ribs increases the lateral dimensions of the thoracic cavity.

Accepted Answer

A) True 
 B)False

Question 9

The amount of air that moves into and out of the respiratory tract with each breath is called ________.

Accepted Answer

The answer of The amount of air that moves into...

Question 10

If all else remains equal, an increase in the difference between atmospheric and alveolar pressure results in an increase in airflow.

Accepted Answer

A) True 
 B)False

Question 11

During systemic gas exchange, what happens to carbon dioxide after it enters a red blood cell?

Accepted Answer

A)   It reacts with water to form carbonic acid.
B)   It reacts with bicarbonate to become carbonic acid.
C)   It reacts with carbonic acid to become bicarbonate.
D)   It attaches to the heme portion of hemoglobin, forming carbaminohemoglobin.E) B) and D)
F) B) and C)

Question 12

About 23% of the carbon dioxide in the blood is attached to the ________ portion of hemoglobin.

Accepted Answer

A)   heme
B)   globin
C)   carboxyl
D)   anhydraseE) None of the above
F) C) and D)

Question 13

According to Boyle's law, the pressure of a gas ________ if the volume of its container increases.

Accepted Answer

A)   increases
B)   decreases
C)   remains the sameD) A) and B)
E) All of the above

Question 14

Another name for the nasal septum is the turbinate.

Accepted Answer

A) True 
 B)False

Question 15

Which is not correct about the left lung?

Accepted Answer

A)   It is slightly smaller than the right lung.
B)   It has a cardiac impression.
C)   It has a cardiac notch.
D)   It has 2 lobes and 1 fissure.
E)   It has an esophageal depression.F) A) and D)
G) C) and D)

Question 16

Approximately what percent of the oxygen in blood is transported by the hemoglobin of erythrocytes?

Accepted Answer

A)   33%
B)   50%
C)   66%
D)   75%
E)   98%F) A) and D)
G) D) and E)

Question 17

Which statement is false regarding the oropharynx?

Accepted Answer

A)   It houses the paired palatine tonsils.
B)   It is located posterior to the oral cavity.
C)   It houses the lingual tonsils.
D)   It houses the pharyngeal tonsil.
E)   It extends from the soft palate to the level of the hyoid bone.F) A) and B)
G) All of the above

Question 18

Terminal bronchioles of the lower respiratory system are lined with

Accepted Answer

A)   keratinized stratified squamous epithelium.
B)   simple cuboidal epithelium.
C)   pseudostratified ciliated columnar epithelium.
D)   stratified columnar epithelium.
E)   nonkeratinized stratified squamous.F) B) and D)
G) B) and E)

Question 19

Consistent with Boyle's law, air flows from a region of lower pressure (the atmosphere) into a region of higher pressure within the lungs.

Accepted Answer

A) True 
 B)False

Question 20

Air flows out of the body during expiration because

Accepted Answer

A)   intrapulmonary pressure is greater than atmospheric pressure.
B)   intrapleural pressure is greater than intrapulmonary pressure.
C)   atmospheric pressure is greater than intrapulmonary pressure.
D)   intrapleural pressure is greater than atmospheric pressure.E) A) and B)
F) B) and C)

Exam 23: Respiratory System

Another name for the nasal septum is the turbinate.

Correct AnswerverifiedShow Answer

Also known as the pneumotaxic center, this area allows for smooth transitions between inspiration and expiration.

Correct AnswerverifiedShow Answer

When someone begins to hyperventilate, the increased movements of their respiratory muscles ________ venous return of blood to the heart.

Correct AnswerverifiedShow Answer

If all else remains equal, an increase in the difference between atmospheric and alveolar pressure results in an increase in airflow.

Correct AnswerverifiedShow Answer

The hilum of the lung

Correct AnswerverifiedShow Answer

The amount of air that moves into and out of the respiratory tract with each breath is called ________.

Correct AnswerverifiedShow Answer

The male voice tends to be in a lower range than a female's voice because men have

Correct AnswerverifiedShow Answer

Depression of the ribs increases the lateral dimensions of the thoracic cavity.

Correct AnswerverifiedShow Answer

Consistent with Boyle's law, air flows from a region of lower pressure (the atmosphere) into a region of higher pressure within the lungs.

Correct AnswerverifiedShow Answer

Which statement is false regarding the oropharynx?

Correct AnswerverifiedShow Answer

Which answer places the following events in proper order for pulmonary ventilation? A: Thoracic cavity volume changes. B: Brainstem nuclei stimulate skeletal muscles to contract. C: Air flows down its pressure gradient. D: Dimensional changes in the thorax lead to pressure changes within the lung.

Correct AnswerverifiedShow Answer

In general, respiratory zone structures are lined with a thicker mucosa than conducting zone structures.

Correct AnswerverifiedShow Answer

Gross & microscopic anatomy of the respiratory tract & related organs. -In these views of the trachea, what type of tissue does number 3 indicate?

Correct AnswerverifiedShow Answer

Terminal bronchioles of the lower respiratory system are lined with

Correct AnswerverifiedShow Answer

Approximately what percent of the oxygen in blood is transported by the hemoglobin of erythrocytes?

Correct AnswerverifiedShow Answer

About 23% of the carbon dioxide in the blood is attached to the ________ portion of hemoglobin.

Correct AnswerverifiedShow Answer

Air flows out of the body during expiration because

Correct AnswerverifiedShow Answer

Which is not correct about the left lung?

Correct AnswerverifiedShow Answer

During systemic gas exchange, what happens to carbon dioxide after it enters a red blood cell?

Correct AnswerverifiedShow Answer

According to Boyle's law, the pressure of a gas ________ if the volume of its container increases.

Correct AnswerverifiedShow Answer

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