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During ejaculation, which structures add secretions to the sperm as part of semen?

  1. Vas deferens and testes

  2. Prostate gland and seminal vesicles

  3. Ovaries and fallopian tubes

  4. Pituitary gland and adrenal glands

The correct answer is: Prostate gland and seminal vesicles

The correct answer is that the prostate gland and seminal vesicles contribute secretions to sperm, forming semen during ejaculation. The seminal vesicles produce a significant portion of the fluid that becomes semen, including fructose, which provides energy for sperm. This fluid also contains proteins and other substances that aid in the motility and viability of sperm. The prostate gland adds additional fluid to the semen, which contains enzymes and substances that help protect and nourish sperm in the female reproductive tract. The combined secretions from these glands are essential for the proper functioning and delivery of sperm during ejaculation. The other structures mentioned do not play a direct role in the formation of semen. The vas deferens transports sperm but does not add fluid, while the testes produce sperm and some hormones but are not responsible for the seminal fluid. Ovaries and fallopian tubes are part of the female reproductive system and do not participate in semen production. The pituitary gland and adrenal glands are involved in hormone regulation but also do not contribute to the formation of semen. This understanding highlights the specific roles of the prostate gland and seminal vesicles in male reproductive physiology.