A runner crossed the finish line without feeling pain from her blisters or other injuries. Which chemical neurotransmitter was involved?
A) Endorphins B) Serotonin C) Epinephrine D) Acetylcholine
A
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The sense of taste is also known as
A) proprioception. B) maculation. C) gustation. D) olfaction. E) sublation.
Enteroendocrine cells differ from goblet cells in which of the following ways?
(a) the direction of release of secretion (b) the use of exocytosis for release of secretory product from the cell (c) their presence in the small and large intestine (d) their origin from a crypt stem cell (e) secretion by a regulated pathway
What is the role of mRNA in protein synthesis?
a) it binds free amino acids and delivers them to the ribosome to be added to a growing protein chain b) it opens the DNA helix and reads the bases from one strand of DNA c) it carries the genetic code from nucleus to the cytoplasm d) it stays within the nucleus and serves as the template for transcription
Where are the upper motor neurons that control skeletal muscles found?
A. The posterior horn of the spinal cord B. The anterior horn of the spinal cord C. The motor association cortex of the cerebrum D. The postcentral gyrus of the cerebrum E. The precentral gyrus of the cerebrum