In what area of the female reproductive tract is semen deposited at the time of ejaculation in pigs?

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Question: In what area of the female reproductive tract is semen deposited at the time of ejaculation in pigs? The options given are:
Option 1: Cervix & Uterus
Option 2: Uterine horn
Option 3: Vagina & Cervix
Option 4: Vagina

Option 1: Cervix & Uterus. This is the correct region for semen deposition in pigs. In many swine reproductive scenarios, the semen is deposited anteflexibly into the cervix and may extend toward the uterine body depending on the insemination technique and pig breed. The cervix serves as a gateway to the uterus, and semen deposition here places sperm in proximity to the oviducts for potential fertilization, aligning with common reproductive management practices in pigs.

Option 2: Uterine horn. While sperm can travel into the uterus and toward the uterine horns after insemination, the primary deposition site during standard pig artificial insemination is not exclusively the uterine horn. The horns are reached as sperm migrate from the cervix, but saying semen is deposited there would be inaccurate for typical procedures.

Option 3: Vagina & Cervix. The cervix is involved in routing semen into the reproductive tract, but deposition in the vagina alone is not typical for most pig insemination methods. The presence of semen in the vagina does occur transiently, but the primary deposition site during ejaculation is nearer the cervix and uterus, not confined to the vaginal canal.

Option 4: Vagina. Placing semen directly into the vagina would be inconsistent with standard practice in pigs, where the semen is aimed to reach the cervix and beyond. The vagina provides a passage, but it is not the intended deposition site for successful fertilization in typical swine insemination.

In summary, understanding the anatomy and common insemination technique clarifies why option 1 best fits the standard description of semen deposition in pigs, while the other options describe parts of the tract or scenarios that are not the typical deposition site.

ANIMSCI 2200.01 SP2025 (35225) MODULE 11 QUIZ

In what area of the female reproductive tract is semen deposited at the time of ejaculation in pigs?

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