61) Embryologically, the nasal cavity develops from
A) invagination of the ectoderm of the olfactory placode.
B) the nasopharynx.
C) a cranial extension of the mouth.
D) the early precursor of the paranasal sinuses.
62) Supportive cartilage disappears from the bronchial tree at the level of the
A) alveolar duct.
B) bronchioles.
C) lobar bronchi.
D) respiratory bronchiole.
63) The lobes of a lung are easy to recognize and distinguish from one another because
A) they all have slightly different colors.
B) they are separated by fissures.
C) each is supplied by a primary bronchus, and the primary bronchi are easy to find.
D) carbon from the air accumulates between and outlines the lobes in most people (even if they breathe almost-unpolluted air).
64) Alveolar pores
A) allow gases to transfer from the alveoli to the blood.
B) allow pleural fluid to enter the alveoli and keep their walls from sticking together.
C) are the openings between the alveolar duct and the alveolus.
D) equalize air pressure throughout the lung.
65) The space between the right and left vocal folds is called the
A) laryngeal inlet.
B) cricoid.
C) vestibule.
D) rima glottidis.
66) Which structure does
not
enter or exit from the hilum of a lung?
A) bronchial vein
B) phrenic nerve
C) pulmonary artery
D) pulmonary plexus
67) Which structure is both a lower respiratory structure and in the conducting zone? (Hint: Recall Figure 22.3.)
A) the laryngopharynx
B) a respiratory bronchiole
C) any bronchus
D) an alveolus
68) In a runner who is breathing heavily during a race, the rima glottidis is
A) half closed.
B) half open.
C) open as far as possible.
D) all the way closed.
69) It is easy to see on the outer surface of a smoker's lung hexagons approximately the size of the tip of a little finger and clearly outlined by black lines of carbon. These structures are
A) lobes.
B) bronchopulmonary segments.
C) lobules.
D) bronchioles.
70) A chronic respiratory disease that leads to an expanded "barrel chest" is
A) emphysema.
B) lung cancer.
C) tuberculosis.
D) pneumonia.
71) Which muscle is used for both quiet inspiration and forced expiration?
A) external intercostals
B) internal intercostals
C) latissimus dorsi
D) scalenes
72) Which of the following changes does
not
occur as the conducting tubes of the respiratory tree become smaller?
A) Cartilage rings are replaced by irregular plates of cartilage.
B) The lining epithelium thins.
C) Elastin in the walls disappears.
D) Cartilage disappears in the bronchioles.
73) The ventral respiratory group (VRG) is a group of neurons located within the
A) forebrain.
B) medulla oblongata.
C) midbrain.
D) pons.
74) In a preserved cadaver, the first rib is likely to form a groove on which surface of the lung?
A) basal
B) mediastinal
C) inferior costal
D) apical (apex)
75) The lungs are located in the
A) mediastinum.
B) abdominopelvic cavity.
C) thoracic cavity.
D) pleura.