Label K represents the
A) brachiocephalic trunk.
B) aortic arch.
C) left pulmonary arteries.
D) left pulmonary veins.
E) pulmonary trunk.
E) pulmonary trunk.
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Which of the following hormones is NOT usually secreted at higher levels in response to stress?
A. Vasopressin B. Aldosterone C. Antidiuretic hormone (ADH) D. Gonadotropins E. Beta-endorphin
A(n) ________, or closed, fracture does not break the skin
A) plain B) internal C) simple D) contained E) common
Two alleles expressing exactly the same information for a trait are designated as ________
A) homozygous B) monogamous C) heterozygous D) hemizygous
Which of the following is a function of the amnion?
A. It enables the embryo to develop symmetrically. B. It protects the embryo from trauma. C. It limits temperature fluctuation. D. It allows movement and supports muscle development. E. All of the choices are correct.