Nictric Oxide, Carbon Monoxide, and Endocannabinoids Are Unusual Among Molecular

Multiple Choice

Nictric oxide, carbon monoxide, and endocannabinoids are unusual among molecular messengers in that they are

A) not synthesized by the body but are ingested directly.
B) synthesized in terminals but are not packaged into vesicles.
C) synthesized in the cell body rather than in axon terminals.
D) packaged in dense-core vesicles rather than synaptic vesicles.
E) packaged into vesicles containing multiple messengers.