A sensory system includes
a. a sensory receptor.
b. nerve pathways from the receptor to the brain.
c. brain regions where the sensory information is processed.
d. a sensory receptor and nerve pathways from the receptor to the brain, only.
e. a sensory receptor, nerve pathways from the receptor to the brain, and brain regions where
the sensory information is processed
E
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What is a characteristic of the all-or-none response?
a. If a stimulus is strong enough, all axons in a nerve bundle will fire simultaneously. b. A neuron will only produce an action potential if it has been depolarized to its threshold level. c. All neurons of a nerve bundle discharge impulses at the same frequency. d. A neuron can create an action potential of varying intensities. e. Either all or none of the neurons of a brain region will fire impulses when stimulated.
What signaling pathway commonly makes use of a G protein to transduce the signal?
A. channel-linked receptor pathways B. receptor tyrosine kinase pathways C. steroid hormone receptor pathways
Scientists have identified and named
a. all living species b. all living and extinct species c. all extinct species d. a fraction of all species
Although statins result in decreases in total blood cholesterol and LDL cholesterol, FDA trials found no decreases in deaths due to cardiovascular disease, true of false?
a. true