Which of the following membranous structures is closest to the fetus?
A. The placenta
B. The amnion
C. The smooth chorion
D. The villous chorion
E. The placental sinus
B. The amnion
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Outline the role of the kidneys in the urinary system
What will be an ideal response?
Kinetic energy is
A. stored energy that could do work but is not doing so. B. energy that moves in waves. C. the form of energy that actually does work. D. movement of ions or electrons. E. energy that flows between objects with different temperatures.
All of the following structural changes found in the heart occur with the normal aging process, except ___________________
A. hypertrophy of the left ventricle B. decreased elasticity of large vessels C. decreased valve flexibility D. increased elasticity of large vessels E. atrophy of conduction cells
The pigment that is brown-black in color and abundant in dark hair is __________.
Fill in the blank(s) with the appropriate word(s).