Most endocrine glands communicate with their target tissues using _____ signals
A. frequency-modulated
B. amplitude-modulated
C. pitch-modulated
D. resonance-modulated
B
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First-class levers ________
A) are typified by tweezers or forceps B) are used when standing on tip-toe C) in the body can operate at a mechanical advantage or mechanical disadvantage, depending on specific location D) have load at one end of the lever, fulcrum at the other, and effort applied somewhere in the middle
Bitter taste is elicited by ________
A) acids B) alkaloids C) hydrogen ions D) metal ions
During the follicular phase, the ovary secretes ____ levels of estrogen and ____ levels of progesterone
a. high, high b. high, low c. low, high d. low, low
The ________ salivary glands are covered by the mucous membrane in the floor of the mouth
A) mandibular B) sublingual C) lingual D) submandibular E) parotid