A nerve impulse travels electrically across a synapse
Indicate whether the statement is true or false
FALSE
Explanation: A nerve impulse crosses the synapse in the form of a neurotransmitter, as a chemical signal.
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Why are G-protein-gated ion channels called "the shortcut pathway"? Choose the correct option
A) Because they are faster than neurotransmitter-gated ion channels B) Because they do not involve any other chemical intermediaries C) Because of their effects on the second messenger cascade D) Because they activate downstream enzymes that alter neuronal function
What is kwashiorkor?
1. A condition seen in individuals suffering from severe protein starvation 2. A condition where blood pressure within the aorta and systemic arterial circulation is elevated 3. A condition where prostate gland cells increase in number because of testosterone stimulation 4. A condition that causes defective cholesterol metabolism
Nonsexual modes of transmission of STIs include all of the following EXCEPT
A) IV drug use. B) drinking. C) tattoos. D) from a pregnant mother to her fetus.
In which stage of the human sexual response does the penis secrete preejaculatory fluid?
A) excitement/arousal B) plateau C) orgasmic D) resolution