In a normal mammalian embryo, cleavage divisions occur primarily while the embryo travels through which structure toward the uterus?
Correct answer: C. Oviduct
- A. Cervix
- B. Vagina
- C. Oviduct
- D. Urethra
Explanation
Early cleavage commonly occurs in the oviduct before the embryo enters the uterus for further development and implantation. The cervix and vagina are lower reproductive tract structures and are not the normal site of early cleavage.
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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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