Answer: luteinising hormone (LH).
- A luteinising hormone (LH)
- B the hormone insulin
- C the hormone thyroxine
- D the hormone adrenaline
Correct answer: A. luteinising hormone (LH)
Explanation: A mid-cycle surge of LH triggers the release of the egg from the ovary.
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.