aus life 如何繁殖?
Answer:
Reproduction in Australia
1. Fertilization:
- Fertilization occurs when the sperm and egg come together inside the female's body.
- The sperm is deposited into the fallopian tube, where it travels through the fallopian tube and into the uterus.
- Fertilization can also occur in the ovary, but it is more common in the fallopian tube.
2. Ovulation:
- Ovulation is the release of an egg from the ovary.
- It occurs when the follicle ruptures and the egg is released into the fallopian tube.
- Ovulation typically occurs 14 days before the start of a period.
3. Gestation:
- The fertilized egg travels through the fallopian tube and into the uterus.
- The embryo implants into the lining of the uterus, where it begins to grow and develop.
- Gestation typically lasts for about 40 weeks.
4. Parturition:
- At the end of gestation, the baby is born through childbirth.
- The baby is then delivered through the vagina or an incision in the abdomen.
5. Lactation:
- After childbirth, the mother produces milk to feed her baby.
- Milk production is stimulated by hormones produced by the pituitary gland.
- The baby nurses on the mother's breast to obtain nutrients.
Additional Notes:
- Australia has a high rate of sexual reproduction, with an average of 2.5 children per woman.
- The average gestation period in Australia is 37 weeks.
- The average age of first pregnancy in Australia is 25.5 years.
