The _________ system causes pupillary constriction
Fill in the blank(s) with correct word
parasympathetic
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Which is NOT typically a step in the cAMP second-messenger system?
A. A first messenger binds to a transmembrane receptor. B. There is dissociation of G-protein subunits. C. An activated G-protein subunit phosphorylates cAMP-dependent protein kinase. D. Adenylyl cyclase converts ATP into cAMP. E. Active cAMP-dependent protein kinase phosphorylates cell proteins.
A postsynaptic neuron will have an excitatory postsynaptic potential (EPSP) when
A) chemically regulated potassium channels are open and potassium is diffusing out of the cell. B) more calcium ions than usual diffuse into the neuron. C) chemically regulated sodium channels are open and sodium is diffusing into the cell. D) the neuron is hyperpolarized. E) more potassium ions than usual diffuse out of the neuron.
There are twenty different molecules of tRNA
Indicate whether the statement is true or false.
Mark was tackled in a football game and sustained an injury to his antebrachial region; where is his injury located?
-hip -forearm -wrist -leg