Which layer of skin is LEAST protected by melanin?
A) stratum spinosum
B) stratum granulosum
C) stratum corneum
D) stratum basale
C
Anatomy & Physiology
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In fishes and amphibians, spongy myocardium receives oxygen from
A) Blood in the heart chambers. B) Coronary arteries. C) Trachea. D) Pericardial fluid.
Anatomy & Physiology
How many single bonds can a carbon atom form if it is double-bonded to an oxygen atom?
A. 1 B. 2 C. 3 D. 4
Anatomy & Physiology
The inhibition of an antagonistic muscle so that the agonist can do the intended movement is due to ________.
A. crossed-extensor reflex B. flaccid paralysis C. reciprocal innervation D. monosynaptic reflex
Anatomy & Physiology
Which abundant antibody is the only one to cross the placental barrier?
A) IgA B) IgM C) IgD D) IgG E) IgE
Anatomy & Physiology