Male Sexual Response and Orgasm

Stimuli and Initial Response

• Stimuli: Triggered by visual, auditory, emotional, tactile touch, fantasies, thoughts, or memory cues.
• Physiological Changes: Brain releases neurotransmitters like dopamine and nitric oxide.

Blood Vessel Dilation

• Neurotransmitters: Act as messengers; help dilate blood vessels in the pelvic region.
• Penile Anatomy: Three cylindrical chambers made of sponge-like material fill with blood.
• Erection Mechanism: Chambers fill with blood, penis becomes rigid and erect.
• Nerve Sensitivity: Increased sensitivity to touch and friction.

Sustaining Erection

• Vein Compression: Veins compress to maintain blood in penile chambers.
• Sexual Tension: Builds in the pelvic region.
• Cowper’s Glands: Produce clear, alkaline fluid (pre-ejaculate) for lubrication and neutralizing acidic urine.

Ejaculation Process

• Sperm Pathway: Travels from testes through vas deferens.
• Semen Formation: Seminal vesicles and prostate gland secrete fluids that mix with sperm.
• Point of No Return: Ejaculation becomes inevitable; leads to orgasm.
• Orgasm Characteristics: Rhythmic pelvic muscle contractions and semen release.
• Neurochemical Release: Endorphins lead to feelings of pleasure and relaxation.

Post-Ejaculation

• Neurotransmitter Release Halted: PDE5 enzyme breaks down dilation chemicals.
• Blood Vessel Constriction: Blood drains from penile tissues, returning penis to flaccid state.
• Refractory Period: Difficult to achieve another erection or orgasm; varies between individuals.
• Emotional State: Feelings of relaxation and well-being due to oxytocin and endorphins.

Psychological Factors

• Emotional Well-being: Crucial for sexual satisfaction and function.
• Performance Anxiety: Stress, emotional disconnection, unresolved relationship issues, depression, negative self-perception, past trauma, and cultural beliefs impact orgasm.
• Consultation: Essential to speak with healthcare professionals or sexual health specialists for concerns.