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Human Sexuality: Biological, Psychological, and Sociocultural Dimensions

Human sexuality encompasses biological reproduction, intimate behavior, identity, and social meaning—a multidimensional aspect of human experience.

Biological Dimension

• Gamete fusion (sperm + ovum) → zygote → embryo.
• Meiosis generates genetic diversity.
• Hormonal regulation via the hypothalamic-pituitary-gonadal (HPG) axis.
• Anatomy: internal/external genitalia, secondary sexual characteristics.

Psychological & Relational Dimension

• Sexual response cycle: Desire, arousal, orgasm, resolution (Masters & Johnson; Kaplan's triphasic model).
• Attachment, intimacy, communication, and consent.
• Sexual orientation (hetero/homo/bi/pan/a-sexual) and gender identity.

Sociocultural Dimension

• Norms, scripts, power dynamics, stigma.
• Reproductive rights, contraception access, STI prevention.
• Education, media representation, legal frameworks (age of consent, marriage).

Sexual Health (WHO Definition)

"A state of physical, emotional, mental, and social well-being in relation to sexuality; not merely the absence of disease." Requires consent, safety, pleasure, and autonomy.

Clinical Approach: The 6 Ps

History taking should cover: Partners, Practices, Protection, Past STIs, Pregnancy, Pleasure/Pain, Pronouns. A non-judgmental, inclusive approach is essential.