What criteria might an observer use to distinguish between a bronchiole and a bronchus?
A) A bronchiole is lined by columnar epithelium.
B) Cartilage is present in bronchioles but not in bronchi.
C) Cartilage is present in bronchi but not in bronchioles.
D) A bronchus is lined by cuboidal epithelium.
C
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The larger of the two branches of the common iliac artery is the ________ artery
A) superficial iliac B) deep iliac C) external iliac D) internal iliac E) femoral
Pepsinogen is produced by ________ and is activated by ________, which is secreted by ________.
A. chief cells; hydrochloric acid (HCl); parietal cells B. parietal cells; carbonic anhydrase (CAH); chief cells C. parietal cells; hydrochloric acid (HCl); chief cells D. chief cells; carbonic anhydrase (CAH); parietal cells E. enteroendocrine cells; carbonic anhydrase (CAH); parietal cells
We constantly shed dead skin cells into the environment. From which epidermal layer do the cells shed?
A. Stratum granulosum B. Stratum basale C. Stratum corneum D. Stratum lucidum E. Papillary layer
A patient is diagnosed with leukocytosis if they have more than ________ WBCs/?L
A) 100,000 B) 1,000 C) 5,000 D) 10,000 E) 50,000