Respiratory System Quiz Flashcards
All of the following is true of the trachea
It is lined by pseudostratified ciliated epithelium
It is composed of about 20 C-shape cartilaginous rings
It divides into the two main bronchi in the mediastinum
It is inferior to the hyoid bone
As blood travels from the right ventricle all the way to the left atrium, the saturation levels of hemoglobin will_______
increase
Contraction of the diaphragm causes thoracic volume to ______________and intrapulmonary pressure to ________________________
Increase – decrease
Peripheral chemoreceptors are located in the __________________and respond to _________
Carotid sinus – plasma pH
Relaxation of diaphragm cause thoracic volume to
decrease
Surfactant is produced by ___________and acts to __________alveolar surface tension.
Type II alveolar cells – decrease
The ancient Greeks referred to the trachea as trachea arteria, which translates as “rough airpipe”. The roughness is due to the ____________________ which functions by __________
Cartilaginous rings ; preventing collapse
The majority of CO2 is transported in the blood stream…
As bicarbonate
The number of lobes in the right lung is ________the number of lobes in the left lung
greater than
The percentage of oxygen dissolved in plasma is _____________ the percentage of oxygen transported as oxyhemoglobin
less than
Trace the path that a molecule of oxygen would follow as it traveled from external atmosphere all the way to the erythrocyte in the pulmonary capillary.
Nasal cavity, nasopharynx, oropharynx, laryngopharynx, vestibular fold, true vocal fold, trachea, primary bronchus, , secondary bronchus, bronchiole, alveolar duct, alveolar sac, respiratory membrane, RBC.
Which of the following is the most inferior?
True vocal folds
Which of the following is the most superior
Carina
Which of the following is true?
The Eustachian tubes link the nasopharynx and the middle ear cavities
Which of the following nerves stimulates the diaphragm to contract?
phrenic nerve