Which of the following laryngeal cartilages are paired? (1) epiglottis (2) thyroid cartilage (3) corniculate cartilage (4) arytenoid cartilage (5) cuneiform cartilage (6) cricoid cartilage
A. 1, 2, 6
B. 3, 5, 6
C. 2, 4, 5
D. 3, 4, 5
E. 2, 3, 4
D
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The thyroid gland:
a. is unique because it does not store the hormones it makes b. is found in the neck c. requires calcium to produce its hormone d. all of the above
Iron
a. can combine reversibly with O2 b. deficiency can produce anemia c. is converted into bilirubin and secreted into the bile when an old red blood cell ruptures and is degraded d. has characteristics a and b e. has characteristics a and c
Calcium carbonate crystals in the utricle and saccule are called
A) maculae. B) statoconia. C) otoliths. D) stones. E) None of the answers are correct.
How are chemical reactions represented?
A) Reactions are represented by line plots and the line represents the direction of the reaction. B) Reactions are represented by a sine wave and the slope represents the direction of the reaction. C) Reactions are represented by chemical equations and the arrow represents the direction of the reaction. D) Reactions are represented by Lewis structural models and the total number of atoms represents the direction of the reaction. E) Reactions are represented by superscripts and subscripts and the charge represents the direction of the reaction.