Which of the following bones does not house a sinus?
A. Maxillary
B. Frontal
C. Zygomatic
D. Sphenoid
Answer: C
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When a catecholamine or peptide hormone binds to receptors on the surface of a cell,
A) a second messenger appears in the cytoplasm. B) the cell becomes inactive. C) the hormone is transported to the nucleus where it alters the activity of DNA. D) the cell membrane becomes less permeable. E) None of the answers are correct.
Which bone articulates with the scapula at the glenoid cavity?
A) humerus B) sternum C) clavicle D) radius E) ulna
Which trait is unique to arteries?
A) They have three tunics. B) They contain valves to prevent backflow. C) They transport blood away from the heart. D) They have a thinner tunica media.
Which of these comprise the nail plate?
a: Free edge b: Nail folds c: Eponchyium d: Nail root e: Nail body A. a, d, e B. a, b, d, e C. a, b, c, e D. a, c, d, e E. a, b, e