Receptor molecules
A. are always lipids.
B. determine whether a neurotransmitter will be excitatory or inhibitory.
C. attach to the synaptic cleft.
D. are not attached to ligand-gated channels.
E. are nonspecific.
Answer: B
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A nerve
A. contains a single axon. B. carries information only toward the PNS. C. carries only sensory information. D. is found only in the CNS. E. is a cablelike bundle of parallel axons.
Ionic iodinated contrast injections in CT will result in fewer contrast reactions compared to non-ionic iodinated contrast injections.
Answer the following statement true (T) or false (F)
The human gestation period consists of
A) fertilization and one trimester. B) two trimesters of 1 month each. C) three trimesters of 1 month each. D) two trimesters of 2 months each. E) three trimesters of 3 months each.
The major differences between plasma and interstitial fluid include
A) plasma has much lower protein levels. B) plasma has very different sodium ion concentrations. C) plasma has very different potassium ion concentrations. D) plasma oxygen levels are lower than those of interstitial fluid. E) plasma has a much higher protein concentration.