1. The first passages of the respiratory zone, which have alveoli in their walls
ID: 3513499 • Letter: 1
Question
1. The first passages of the respiratory zone, which have alveoli in their walls, are called: a. terminal bronchioles b. respiratory bronchioles c. alveolar ducts d. alveolar sacs
2. What takes place across the respiratory membrane? Be specific.
3. Which of the following is not a trend we find within the respiratory tract?
a. The epithelium gets progressively shorter in the lower passages.
b. The amount of hyaline cartilage gradually increases as we move to smaller passages.
c. The amount of smooth muscle increases in the smaller passages.
d. The amount of elastic fibers increases in the smaller passages.
4. Which of the following organs is not an accessory organ of digestion? a. Salivary Glands b. Gallbladder c. Cecum d. Pancreas
5. Fill in the blanks: Bile is produced by the _________ and stored and concentrated in the _______.
6. Folds of the small intestinal mucosa are known as: a. microvilli b. circular folds c. intestinal crypts d. villi
7. True/False: Mark the following statements as true (T) or false (F). If the statement is false, correct it so it becomes a true statement.
____ a. The peritoneal cavity is located between the visceral peritoneum and the mesentery.
____ b. The shortest segment of the small intestine is the duodenum.
____ c. Filiform papillae are keratinized projections from the tongue that help physically break down food.
____ d. Pancreatic islets are the exocrine portion of the pancreas.
____ e. The ileocecal valve regulates flow from the stomach to the duodenum.
____ f. The vermiform appendix is a blind-ended sac that contains lymphoid follicles.
Explanation / Answer
1. The first passages of the respiratory zone, which have alveoli in their walls, are called:
ANSWER- a. terminal bronchioles - THEY ARE THE TERMINAL POINT OF THE RESPIRATORY SYSTEM TO WHICH THE ALVEOLI ARE ATTACHED.
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2. What takes place across the respiratory membrane? Be specific.
carbon dioxide (CO2) diffuses across the respiratory membrane from the blood into the alveoli and oxygen from the blood diffuses from the blood into the alveoli. The amount of oxygen and carbon dioxide that diffuses across the respiratory membrane is similar.
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3. Which of the following is not a trend we find within the respiratory tract?
Answer- the amount of hyaline cartilage gradually increases as we move to smaller passages.
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4. Which of the following organs is not an accessory organ of digestion?
Answer- c. Cecum - it is a part of the large intestine found at the junction between the small intestine and large intestine.
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