What is the only sense in which signals can reach the cerebral cortex without passing first through the thalamus?
A. Vision
B. Equilibrium
C. Gustation
D. Olfaction
E. Touch
Answer: D
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Which best describes the specific cause of Parkinson's disease?
A. Reduced ability of neurons in the substantia nigra to release dopamine B. Failure of serotonin receptors to bind with these neurohormones C. Hyperactivity of metabolic enzymes that degrade dopamine D. Natural tendency of basal nuclei to follow a daily recurring, oscillating cycle of rising and falling norepinephrine release E. Enhanced sensitivity of cholinergic receptors to acetylcholine
The primary structure of a protein consists of
a) alpha helices. b) beta-pleated sheets. c) three dimensional folded conformation. d) a sequence of amino acids linked by peptide bonds. e) the overall folded conformation of the protein's subunits.
The darkly pigmented, highly vascular layer of the eyeball that lies behind the retina is the __________.
Fill in the blank(s) with the appropriate word(s).
In a laboratory experiment, adding curare, which binds to acetylcholine receptors, to the solution around a muscle decreases the size of the end-plate potential. Adding prostigmine, an acetylcholinesterase blocker, increases the size of the end-plate potential. Explain why.
What will be an ideal response?