Answer: placenta.
- A placenta
- B amnion
- C chorion
- D yolk sac
Correct answer: A. placenta
Explanation: The placenta connects the foetus to the mother for exchange of nutrients, gases and wastes.
The human male reproductive system: sperm formed in the testis mature in the epididymis and travel via the vas deferens, mixing with secretions of the seminal vesicle, prostate and bulbourethral glands. Image: Wumingbai, CC BY-SA 4.0, via Wikimedia Commons.
Concept context
Male and female reproductive systems, gametogenesis, fertilization, implantation, pregnancy, and reproductive health.