In terms of neurotransmitter activity, how does the mechanism of erection differ from that of orgasm? a. Erection depends on acetylcholine, and orgasm depends on serotonin. b. Erection depends on increased dopamine release, and orgasm depends on decreased dopamine release. c. Erection depends on one set of dopamine receptors, and orgasm depends on different dopamine receptors. d. Erection depends on serotonin, and orgasm depends on nitric oxide.
In terms of neurotransmitter activity, how does the mechanism of erection differ from that of orgasm? a. Erection depends on acetylcholine, and orgasm depends on serotonin. b. Erection depends on increased dopamine release, and orgasm depends on decreased dopamine release. c. Erection depends on one set of dopamine receptors, and orgasm depends on different dopamine receptors. d. Erection depends on serotonin, and orgasm depends on nitric oxide.
Introduction:
Neurotransmitters are the chemical messengers released from the end of the nerve cell for interacting with the neighboring nerve cell. These neurotransmitters get diffused across the synapse and cause the transmission of the impulses to other fibers.
The neurotransmitter causes the transmission of the signals from one nerve cell to another across the synapse. These neurotransmitters are present in synaptic vessels. These vessels then get fused with the sensing membrane, resulting in neurotransmitters releasing into the synaptic cleft to another receiving nerve cell's dendrite and thereby transmitting the signals.
There are different neurotransmitter molecules, for instance, acetylcholine, dopamine, glycine, norepinephrine, serotonin.
Correct option:
- Option (c) is correct.
Explanation:
- Testosterone is necessary for sexual arousal in males. It triggers the release of the neurotransmitter dopamine in the medial prefrontal cortex and other parts of the brain. Dopamine causes the stimulation of D1 and D5 receptor types, which results in erection in males and sexually receptive postures in females. At a higher concentration of dopamine, D2 receptors are stimulated, resulting in orgasm.
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