What kind of lipophilic hormone stays active in the blood the longest?
a. catecholamines
b. thyroid hormone
c. insulin
d. indoleamines
e. steroids
b
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Which of the following explains why tattoos are permanent?
A) Tattoo ink is deposited into the epidermis. These skin cells shed over time. B) Tattoo ink is deposited into the hypodermis. Unlike the epidermis, cells in this region do not shed over time. C) Tattoo ink is deposited into the epidermis. Unlike the dermis, cells in this region do not shed over time. D) Tattoo ink is deposited into the dermis. Unlike the epidermis, cells in this region do not shed over time.
Pepsin formation in the stomach is autocatalytic
Indicate whether the statement is true or false
Each of the following changes will result in increased blood flow to a tissue except
A) increased hematocrit. B) increased vessel diameter. C) increased blood pressure. D) decreased peripheral resistance. E) relaxation of precapillary sphincters.
Which of the following lists levels of human structure from the most complex to the simplest?
A) Organelle, cell, tissue, organ, organ system B) Organ system, organ, cell, tissue, organelle C) Organ, organ system, tissue, cell, organelle D) Organ system, organelle, tissue, cell, organ E) Organ system, organ, tissue, cell, organelle