Saltatory conduction occurs:
A) when myelin sheaths are present. B) when threshold has not yet been reached.
C) in gray matter. D) when myelin sheaths are absent.
Answer: A
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Platyhelminthes exhibit which of the following lifestyles?
A) Free-living B) Free-living and ectoparasitic C) Ectoparasitic and endoparasitic D) Free-living, ectoparasitic, and endoparasitic
The central sulcus separates which regions of the cerebrum?
A) the sensory and motor areas B) the pyramidal cells and the frontal lobes C) the temporal and insular lobes D) the parietal and occipital lobes E) None of the answers are correct.
A triglyceride consists of
A. two cholesterols and two fatty acids. B. glycerol and three fatty acids. C. a cholesterol and three fatty acids. D. three glycerols and a fatty acid.
The effect of the neurotransmitter on the muscle cell membrane is to temporarily modify its permeability of ions such as Na+ and K+
Indicate whether the statement is true or false