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.
D
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Increased levels of carbon dioxide in the blood will result in
A) decreased blood flow to the lungs. B) decreased parasympathetic stimulation of the heart. C) decreased cardiac output. D) decreased heart rate. E) All of the answers are correct.
Stress triggers the release of what hormone from the adrenal cortex?
a. dopamine b. growth hormone c. melatonin d. testosterone e. cortisol
Billions of CNS interneurons are grouped in complex patterns called neuronal
A. webs. B. pools. C. meshes. D. networks. E. complexes.
The__________ is the connective tissue covering around a single muscle fiber.
Fill in the blank(s) with the appropriate word(s).