The prominent ridges in the lining of the empty stomach are called
A) cardia.
B) papillae.
C) rugae.
D) plicae.
E) villi.
C
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Chemical messengers released directly into the bloodstream, with the ability to affect cells for hours or days, are called ________
A) Hormones B) Dendrites C) Neurotransmitters D) Sensory cells
During platelet plug formation, platelets release ________ and endothelial cells release ________, which lead to vasoconstriction.
A. thromboxane; endothelin B. endothelin; thromboxane C. histamine; heparin D. erythropoietin; thromboxane E. thromboxane; histamine
Only autosomal trisomies involving chromosomes 13, 18, and 21 are survivable. Why would this be?
A. These are redundant chromosomes. B. These are relatively short chromosomes. C. These chromosomes have no genes. D. These are relatively gene-poor chromosomes. E. These are relatively long chromosomes.
A woman who drops something on her foot might injure which of the following bones?
A. vomer B. pisiform C. lunate D. cuneiform E. metacarpals