Which substance is commonly added to semen before freezing to protect sperm cells from cryoinjury?
Correct answer: C. Glycerol as a cryoprotectant
- A. Prostaglandin as a luteolytic agent
- B. Oxytocin as a motility stimulant
- C. Glycerol as a cryoprotectant
- D. Heparin as a capacitation inhibitor
Explanation
Glycerol protects sperm membranes and reduces cellular damage caused by ice formation during freezing and thawing. Oxytocin and prostaglandin are reproductive hormones, while heparin has roles in sperm capacitation in some species.
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About Theriogenology and Animal Reproduction
Covers the reproductive anatomy and physiology of male and female domestic animals, including puberty, oestrous cycles, ovulation, fertilisation, pregnancy, parturition and lactation. It also includes artificial insemination, semen evaluation, pregnancy diagnosis, infertility, dystocia and reproductive disorders, with attention to species differences.
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