An erection involves the complex interaction of muscles, nerves, chemicals, and blood vessels that work in coordination to engorge the penis with blood, including: [six] Erection subsides when parasympathetic stimulation is discontinued; baseline stimulation in the sympathetic division in the autonomic nervous process triggers constriction in the penile arteries and https://franciscotnfyq.blogcudinti.com/35612517/facts-about-service-revealed