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Sperm is produced, transported and then combined with secretions from the accessory glands to form semen - NSC Life Sciences - Question 4 - 2017 - Paper 1
Question 4
Sperm is produced, transported and then combined with secretions from the accessory glands to form semen. The semen is then transferred into the body of the female w... show full transcript
Worked Solution & Example Answer:Sperm is produced, transported and then combined with secretions from the accessory glands to form semen - NSC Life Sciences - Question 4 - 2017 - Paper 1
Step 1
Step 2
Formation and transport of semen
Answer
After spermatogenesis, sperm cell maturation occurs in the epididymis, where the sperm are temporarily stored. During ejaculation, the sperm move through the vas deferens and pass through the seminal vesicles, prostate gland, and Cowper's glands. These glands add fluids that provide nutrition, assist in the movement of the sperm, and neutralize the acidity of the vaginal environment. The semen then passes through the urethra, enters the vagina, and swims up the Fallopian tube to meet the ovum during copulation.
Step 3
Structural suitability of the sperm cell for fertilisation
Answer
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The acrosome is essential as it contains enzymes that help dissolve a path into the ovum.
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The nucleus of the sperm carries the genetic material of the male and contains a haploid number of chromosomes.
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Many mitochondria located in the middle piece provide the energy required for the sperm to swim towards the egg. Overall, the presence of a tail enables the sperm to swim effectively, facilitating its journey to fertilisation.