Axon collaterals of a first motor neuron (preganglionic neuron) of the autonomic nervous system synapsing with several second motor neurons in autonomic ganglia illustrate which type of neuronal circuit?
A) convergent pathway
B) divergent pathway
C) reverberating circuit
D) parallel after-discharge circuit
Answer: B) divergent pathway
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Sympathetic stimulation of the kidney can do all of the following except
A) produce powerful vasoconstriction of the afferent arterioles. B) increase the glomerular filtration rate. C) trigger renin release. D) produce renal ischemia. E) reduce blood flow to kidneys.
The shell and shell pigments of an egg are produced in the ____________
Fill in the blank(s) with correct word
In skeletal muscle, when calcium binds to the regulatory protein troponin, it increases the affinity of neighboring troponin molecules for calcium. This is an example of
A. allosteric modulation. B. cooperativity. C. covalent modulation. D. phosphorylation. E. saturation.
Given the following list of organic molecules, which includes hormones? 1) Nucleic acid derivatives 2) Polypeptides 3) Steroids 4) Proteins
A. 1, 2, 3, 4 B. 1, 2, 3 C. 1, 3, 4 D. 1, 2, 4 E. 2, 3, 4