Which of the following is a noninvasive prenatal test?
a) AFP
b) CVS
c) Amniocentesis
d) All of these
e) None of these
a
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Precapillary sphincters will
A. control blood flow into the true capillaries. B. cause blood to flow directly from the metarteriole into the postcapillary venule. C. open when the tissue needs nutrients. D. close when the tissue's needs have been met. E. All of the answers are correct.
Which of the following nerve endings is not found in the skin?
A. Proprioceptors B. Ruffini corpuscles C. Tactile corpuscles D. Lamellar corpuscles E. Hair receptors
A skin condition in which intensely itchy wheals or welts appear is called ____________________.?
Fill in the blank(s) with correct word
The smallest unit of matter that enters into chemical reactions is the
A. atom. B. molecule. C. compound. D. neutrino.