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12.1 Identify part A. 12.2 State ONE function of part E. 12.3 During a vasectomy, part \( A \) is out anid tied as shown th the diagram, Ssmex will still bo reloased during copulation. Explain the composition of the semnen after a vasectormy. 12.4 In some raro cases, males are born whth part Clocatod inside the body because it failed to descend into the serotum. Explain how this condition may affect male fertitity, 2.5 Describe the process of spermatogenesis.

Ask by Higgins Johnston. in South Africa
Mar 14,2025

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**12.1:** \(A\) is the vas deferens. **12.2:** \(E\) secretes a fluid that provides energy for sperm. **12.3:** After a vasectomy, the vas deferens (part \(A\)) is tied, stopping sperm from reaching the semen. However, the seminal vesicles still produce fluid, so semen is released without sperm. **12.4:** If a testis doesn't move to the scrotum, it stays warmer, which can slow down sperm production and reduce fertility. **12.5:** Spermatogenesis involves sperm cells growing from stem cells, dividing, and transforming into mature sperm with a head, midsection, and tail.

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During a vasectomy, the vas deferens (part A) is cut and tied, preventing sperm from mixing with semen. Although sperm production continues in the testicles, the sperm are reabsorbed by the body since they can’t travel through the reproductive tract. Hence, the semen released during ejaculation will contain seminal fluid from glands like the seminal vesicles and prostate, but no sperm, making it "sterile." When part C, typically the testes, does not descend into the scrotum, it can affect male fertility due to temperature variations. The internal body temperature is too high for optimal sperm production and maturation, which usually occurs at a lower temperature in the scrotum. This can lead to decreased sperm count or abnormal sperm development, impacting overall fertility.

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