In the following illustration, the arrow points to the:
A) left vagus nerve.
B) left sympathetic trunk.
C) left phrenic nerve.
D) left internal thoracic artery.
E) hemiazygos vein.
Ans: A
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The building blocks that form the DNA double helix are called
A. nucleoli. B. bases. C. nucleotides. D. nucleic acids. E. nuclear pores.
List these events in the correct order for CSF flow in the CNS
a: CSF flows into the arachnoid villi b: CSF enters the blood c: CSF flows through the cerebral aqueduct to the 4th ventricle d: CSF flows into the subarachnoid space e: CSF is produced by the choroid plexus A. a, b, c, e, d B. e, a, b, c, d C. c, d, a, e, b D. e, c, d, a, b E. e, d, a, b, c
Match the response with the type of chemical.
1. blocks secretion of pancreatic enzymes 2. blocks secretion of adrenal catecholamines 3. blocks urination 4. blocks urination A. sympathetic antagonist B. parasympathetic antagonist
Synaptic knobs are at the ends of
A) axons. B) cell bodies. C) dendrites. D) neuroglia.