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Cow Reproductive System Anatomy

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Cow Reproductive System Anatomy

A dairy farm is reviewing its animal-care notes. Use the anatomy and cycle information below to solve each task. Use precise biological terms; accept that some timing varies between animals.

Part A: Trace the anatomy

Follow the route from egg release towards the outside of the body. In cattle, the ovary releases ova and produces reproductive hormones. After ovulation, an ovum enters the oviduct, then passes into the uterine horn and uterine body.

1.Which structure releases ova and also produces reproductive hormones?

2.Based on the route described above, put these structures in the order an ovum travels after ovulation: uterine horn, oviduct, uterine body. Which structure does it enter first?

3.A fertilised ovum is moving towards the uterus. In which structure does fertilisation most commonly occur, and what is one role of the cervix?

4.Match each structure to its main role.

Ovary
Oviduct
Uterus
Vulva

Usual site of fertilisation; carries the ovum
External part of the reproductive tract
Site where the embryo develops
Releases ova and produces hormones

Part B: The oestrous cycle

In cattle, the oestrous cycle averages about 21 days, although individual cycles vary. Oestrus (being in heat) is the period when a cow is receptive to mating. Ovulation generally occurs after oestrus. Hormone levels change through the cycle, influencing the reproductive tract.

5.The cycle average is 21 days. If one observed oestrus begins on Day 0, estimate when the next cycle may begin. Why is this only an estimate rather than an exact prediction?

6.A farm records a cow showing signs of oestrus on Day 0 and again on Day 22. Is this broadly consistent with the stated average cycle? Explain using the numbers.

7.True or false: The uterus is the usual site of fertilisation in cattle. Correct the statement if it is false.

TrueFalse

Part C: Apply the biology

Use evidence and biological reasoning. More than one well-supported explanation may be valid.

8.A cow has had inadequate feed for several weeks. Explain one possible way poor nutrition could affect reproduction, and avoid claiming that the outcome is guaranteed.

9.A farm wants to estimate gestation length from a mating date. Cattle gestation is about 280–285 days, or roughly nine months. Give one reason the date of birth cannot be predicted with complete precision.

10.A student says, “The oviduct and cervix both transport eggs to the uterus.” Identify the error and rewrite the claim accurately.

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Cow Reproductive System Anatomy

Cow Reproductive System Anatomy

Part A: Trace the anatomy

Part B: The oestrous cycle

Part C: Apply the biology

3 printable pages

About This Worksheet

Free in Kuraplan

Print-Ready

AI-Generated

For Teachers & Parents

Need a custom version of this worksheet?

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