Question 1

External respiration is the same as pulmonary ventilation.

Accepted Answer

External respiration involves the exchange of gases (oxygen and carbon dioxide) between the air in the lungs and the blood in the pulmonary capillaries. Pulmonary ventilation, on the other hand, refers to the movement of air in and out of the lungs. While external respiration relies on pulmonary ventilation to occur, they are distinct processes.

Question 2

Blood vessels, nerves and a main bronchus all enter each lung at the hilum.

Accepted Answer

The hilum is the area on the lung where structures such as blood vessels, nerves and a main bronchus enter and exit.

Question 3

In the bronchial tree, the lobar bronchi branch directly into&#10;A)terminal bronchioles.&#10;B)secondary bronchi.&#10;C)primary bronchi.&#10;D)bronchioles.&#10;E)segmental bronchi.

Accepted Answer

The lobar bronchi, also known as secondary bronchi, branch into segmental bronchi, which further divide into smaller bronchioles. Therefore, the best choice is E.

Question 4

The paranasal sinuses open into the nasopharynx.

Accepted Answer

The paranasal sinuses open into the nasal cavity, not directly into the nasopharynx.

Question 5

The exchange oxygen and carbon dioxide in the tissues is called&#10;A)tissue respiration.&#10;B)cellular respiration.&#10;C)pulmonary ventilation.&#10;D)internal respiration.&#10;E)external respiration.

Accepted Answer

The exchange of oxygen and carbon dioxide in the tissues is called internal respiration. This process takes place between the tissues and the capillaries surrounding them. Cellular respiration refers to the overall process of oxygen utilization by cells to produce ATP, while pulmonary ventilation refers to the movement of air into and out of the lungs. External respiration is the exchange of gases between the lungs and the blood.

Question 6

The narrow air passages through the nasal cavity are called&#10;A)nasal meatuses.&#10;B)external nares.&#10;C)nasal conchae.&#10;D)paranasal sinuses.&#10;E)nasal septa.

Accepted Answer

Nasal meatuses are narrow air passages through the nasal cavity. External nares are the openings on the outside of the nose. Nasal conchae are bony structures that help to increase the surface area of the nasal cavity. Paranasal sinuses are air-filled cavities within the facial bones. Nasal septa are the walls that separate the left and right nasal cavities.

Question 7

The walls of alveoli and their associated capillaries both consist of simple squamous epithelium.

Accepted Answer

Both the walls of alveoli and their associated capillaries consist of simple squamous epithelium. This allows for efficient gas exchange between the lungs and the bloodstream.

Question 8

Which of the following is not true of the larynx?&#10;A)The glottis consists of the vocal folds and the opening between them.&#10;B)All of the air that enters the lungs must go through the larynx first.&#10;C)The thyrohyoid ligament connects the hyoid bone to the larynx.&#10;D)The vestibular folds are the only vocal cords that produce sound.&#10;E)All of these are true of the larynx.

Accepted Answer

The statement "The vestibular folds are the only vocal cords that produce sound" is not true. While the vestibular folds (also known as false vocal cords) play a role in protecting the true vocal cords and assisting with sound production, they themselves do not produce sound. It is the true vocal cords (also known as vocal folds) that vibrate to produce sound.

Question 9

The largest cartilage of the larynx is the&#10;A)cricoid cartilage.&#10;B)corniculate cartilage.&#10;C)epiglottic cartilage.&#10;D)arytenoid cartilage.&#10;E)thyroid cartilage.

Accepted Answer

The largest cartilage of the larynx is the thyroid cartilage. It is also known as the Adam's apple and forms the anterior and lateral walls of the larynx.

Question 10

In the bronchial tree, terminal bronchioles branch directly into&#10;A)alveolar sacs.&#10;B)respiratory bronchioles.&#10;C)alveoli.&#10;D)large bronchioles.&#10;E)alveolar ducts.

Accepted Answer

Terminal bronchioles branch into respiratory bronchioles, which are the first structures in the respiratory zone where gas exchange occurs. Alveolar sacs and alveoli are part of the respiratory zone but are not directly branched from the terminal bronchioles. Large bronchioles and alveolar ducts do not exist in the bronchial tree.

Question 11

Which type of epithelial tissue contains goblet cells and cilia, and lines the wall of the trachea?&#10;A)Simple squamous epithelium&#10;B)Simple columnar&#10;C)Pseudostratified ciliated columnar epithelium&#10;D)Stratified squamous&#10;E)Simple cuboidal

Accepted Answer

The answer of Which type of epithelial tissue contains goblet...

Question 12

Which of the following portions of the pharynx is a passage for air only (not food)?&#10;A)Oropharynx&#10;B)Sinopharynx&#10;C)Nasopharynx&#10;D)Laryngopharynx&#10;E)None of the portions of the pharynx is a passageway for only air; all portions transport both air and food.

Accepted Answer

The answer of Which of the following portions of the...

Question 13

The lungs are symmetric, with each lung consisting of three lobes.

Accepted Answer

The answer of The lungs are symmetric, with each lung...

Question 14

Which structure(s)of the respiratory system contain(s)C-rings or plates of hyaline cartilage, to prevent airway collapse?&#10;A)The trachea and bronchi&#10;B)The trachea, bronchi, and all of the bronchioles&#10;C)The bronchi only&#10;D)The nasal cavity&#10;E)The trachea only

Accepted Answer

The answer of Which structure(s)of the respiratory system contain(s)C-rings or...

Question 15

Which of the following is not true of the pleura?&#10;A)Surfactant in the pleural cavity prevents the parietal and visceral pleurae from sticking together.&#10;B)The parietal pleura covers the inner surface of the thoracic wall and the superior surface of the diaphragm.&#10;C)The pleural cavity contains serous fluid, which is a lubricant for the movements associated with breathing.&#10;D)The visceral pleura covers the outer surface of each lung.&#10;E)All of these are true of the pleura.

Accepted Answer

The answer of Which of the following is not true...

Deck 51: Respiratory Organs