Of the two types of synapses, based on mode of communication, which is less common but allows faster signal transmission?
A. Mechanical synapse
B. Physical synapse
C. Electrical synapse
D. Magnetic synapse
E. Chemical synapse
Answer: C
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A chemical synapse ALWAYS includes ________.
1. axon terminal 2. presynaptic cell 3. synaptic cleft 4. postsynaptic cell 5. dendrite A) 2, 3, 4 B) 2, 3, 4, 5 C) 1, 3, 4 D) 1, 2, 3, 4 E) 1, 2, 3, 4, 5
Which organizational level consists of related organs that work to achieve a common function?
A. Organ level B. Organ system level C. Tissue level D. Cellular level E. Chemical level
Each of the following hormones is an amino acid derivative except
A) epinephrine. B) norepinephrine. C) thyroid hormone. D) thyroid-stimulating hormone. E) melatonin.
Which blood vessel has a thicker tunica media?
A. Capillary B. Vein C. Artery D. The tunica media is the same size in all vessels.