an illustration of a female reproductive organ

Human sexual reproduction involves several biological processes:1. **Anatomy**: In heterosexual intercourse, the male reproductive system includes the penis and testicles, while the female reproductive system includes the vagina, uterus, and ovaries.2. **Arousal**: Sexual arousal triggers physiological responses, such as increased blood flow to the genitals, leading to an erection in males and lubrication in females.3. **Intercourse**: During sexual intercourse, the erect penis is inserted into the vagina. This can stimulate both partners and increase pleasure.4. **Ejaculation**: In males, sexual stimulation can lead to ejaculation, releasing sperm into the female's vagina.5. **Fertilization**: If sperm travel through the cervix into the uterus and meet an egg released during ovulation, fertilization can occur. This union forms a zygote, which can develop into an embryo.6. **Reproduction**: If the embryo successfully implants in the uterus, it can grow into a fetus, leading to pregnancy.Overall, sexual activi