The medullary (marrow) cavity of long bones is lined with:
a. hyaline cartilage
b. dense connective tissue
c. fibrocartilage
d. reticular tissue
Answer: b. dense connective tissue
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Where in the urinary tract is transitional epithelium found?
A. Ureters, urinary bladder, and prostatic urethra B. Urinary bladder C. Ureters and urinary bladder D. Ureters E. Urethra
If a lever operates at a mechanical disadvantage, it means that the ________
A) effort is farther than the load from the fulcrum B) load is near the fulcrum and the effort is at the distal end C) lever system is useless D) load is far from the fulcrum and the effort is applied near the fulcrum
A drug that has a margin of safety of 75 is a. safer than a drug whose margin of safety is 5 b. less safe than a drug whose margin of safety is 5. c. more likely to cause toxic side effects
d. not marketable in the United States.
Each hemoglobin molecule
A. has one heme group. B. contains two polypeptide chains. C. transports four oxygen molecules. D. has two iron atoms and two globin chains. E. transports one oxygen molecule.