The fusion of the two brachiocephalic veins forms the
A) inferior vena cava.
B) superior vena cava.
C) phrenic vein.
D) azygos vein.
E) highest intercostal vein.
B) superior vena cava.
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The only sympathetic preganglionic neuron to go directly to an organ is one branch of the ________ splanchnic nerve.
Fill in the blank(s) with the appropriate word(s).
Ethylene chloride is the toxic gas mentioned in the text that can be used to chemically sterilize surgical instruments
Indicate whether the statement is true or false
Organisms, like the arctic fox, that live in cold environments have evolved counter-current heat exchangers in their limbs to help maintain their body temperature at a level well above the ambient temperature. This explanation could be considered
a. mechanistic. b. evolutionary. c. teleological. d. all of these. e. none of these.
What is the layer labeled "4"?
