A blastocyst is a(n)
A) extraembryonic membrane.
B) solid ball of cells.
C) hollow ball of cells.
D) portion of the placenta.
E) origin of the urinary bladder.
C
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All of the following are true of perspiration produced by merocrine sweat glands except that it
A) is more than 99 percent water. B) contains electrolytes and waste products. C) helps cool the body when it evaporates. D) helps to prevent bacteria from colonizing the skin. E) produces the body odor characteristic of "sweating."
The rounded superior portion of the uterus that lies between the uterine tubes is called the ________.
A. body B. cervix C. fundus D. myometrium
The Scapula is _________ to the Ribs and _________ to the Clavical.
a) Superficial, Anterior b) Superficial, Posterior c) Deep, Anterior d) Deep, Posterior
The embryo is most sensitive to outside influences that can cause malformations during the
A. first two weeks after fertilization. B. twenty-first to twenty-sixth weeks of development. C. ninth to the sixteenth weeks of development. D. twelfth to the twentieth weeks of development. E. third to the ninth weeks of development.