12 Questions
At which three levels does the respiratory system operate?
pulmonary gas exchange, tissue gas, and cellular pulmonary gas exchange
What is the function of the larynx in the respiratory system?
to keep the airway patent
What separates the left and right bronchi?
the carina
What is the number of alveoli responsible for pulmonary gas exchange?
300 million
What type of tissue is the trachea composed of?
dense regular connective tissue and smooth muscle
How many lobes does the left lung contain?
two
Which of the following is NOT a primary organ of the digestive system?
liver
What is the function of the myenteric plexus?
to promote rhythmic contractions
What is the approximate length of the GI tract?
25 feet
What is the term for the nervous system that regulates the digestive system internally?
enteric nervous system
What is the primary function of the salivary glands?
to produce digestive enzymes
Which of the following cranial nerves is involved in tasting food?
cranial nerve 7
Test your knowledge of the human respiratory system, including the different levels of gas exchange and the structures of the respiratory tract. Learn about the roles of each part, from the external nose to the lungs, and how they work together to facilitate breathing.
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