Which is the layer of the serous membrane that directly covers the surface of internal organs?
A. Omental layer
B. Visceral peritoneum
C. Parietal peritoneum
D. Muscularis mucosa
E. Rectal peritoneum
Answer: B
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The most abundant form of smooth muscle is
A. single-unit, which is also known as visceral smooth muscle. B. cardiac muscle, which is also known as visceral smooth muscle. C. multiunit, which is also known as visceral smooth muscle. D. multiunit, which is also known as varicose muscle. E. single-unit, which is also known as somatic nervous system muscle.
The tympanic membrane
a. vibrates when struck by the incus b. contains the organ of Corti c. produces ear wax d. is connected to the stapes e. is not characterized by any of the above
Which of the following factors would NOT tend to increase systemic arterial blood pressure?
A. Increased venous return B. Increased blood volume C. Increased parasympathetic stimulation D. Increased sympathetic stimulation E. Increased activity of the skeletal muscle pump
A 56-year-old woman has worked in a photography shop developing film for the past 20 years. She has a long history of shortness of breath and chronic cough, which have progressively become worse
Her FEV1 and FVC values were reduced but her FEV1/FVC ratio was within the normal range. Her diffusion capacity as measured by DLCO was low at 15 mL/min/mm Hg. A bronchoalveolar lavage and tissue biopsy were performed. The lavage sample revealed high numbers of macrophages but of abnormal appearance and high numbers of dead macrophages. What type of pathology would you expect to find? A. peribronchial inflammation with eosinophils B. granulomatous-like lesion in the terminal bronchioles with interstitial fibrosis and large foamy macrophages C. interstitial edema fluid accumulation with neutrophil infiltrate D. emphysematous lesion with large alveoli and minimum interstitial fibrosis