Asked by Nicholas Russell on May 14, 2024
Verified
Which of the following explains the neural mechanism of an erection?
A) It is an autonomic reflex mediated predominantly by parasympathetic nerve fibers.
B) It is an autonomic reflex mediated predominantly by sympathetic nerve fibers.
C) It is a somatic reflex mediated predominantly by parasympathetic nerve fibers.
D) It is a somatic reflex mediated predominantly by sympathetic nerve fibers.
E) It is an exclusively voluntary action mediated by the cerebral cortex.
Autonomic Reflex
An involuntary response mediated by the autonomic nervous system to maintain homeostasis.
Parasympathetic Nerve Fibers
Nerve fibers of the parasympathetic nervous system, which promote relaxation, nutrient digestion, and energy conservation in the body.
Sympathetic Nerve Fibers
Part of the autonomic nervous system that prepares the body for physical and mental activity by controlling the flight or fight response.
- Explain the mechanisms involved in erection and ejaculation.
Verified Answer
RM
Raziya MamedovaMay 15, 2024
Final Answer :
A
Explanation :
Erections are primarily an autonomic reflex mediated by parasympathetic nerve fibers, which lead to vasodilation and increased blood flow into the penile tissues, causing an erection.
Learning Objectives
- Explain the mechanisms involved in erection and ejaculation.