Endocrine System Involved In Reproduction Case Study

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Register to read the introduction… How is the endocrine system involved in reproduction?
In essence, the endocrine system controls reproduction. The pituitary gland controls the release of LH and FSH which in turn stimulate the release of oxytocin, progesterone, estrogen, and testosterone; all of which are vital in reproduction.

F. What hormones lead to the maturation of both sperm and egg?

LH and FSH lead to the maturation of both sperm and egg

Exercise 2: Reproductive Structures of the Cat

A. Why would some reproductive structures be hard to find in a fetal cat?
The reproductive structures in an adult cat are very small. In a fetal cat they would be even smaller or not yet developed making them hard to locate.

B. How does the anatomical arrangement of the organs in the cat compare to that of a human?
The reproductive organs of the cat are smaller in size to that of a human. The main difference observed was the bicornate uterus and the sharing of the urogenital sinus. They are laid out fairly similar
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How is the cat uterus modified to carry several fetuses (if you had a male cat refer to the picture on Page 107 of the dissection manual)?
The uterus is bicornuate or y-shaped with two uterine horns. The enlarged size of the uterus allows it to carry several fetuses at once.

Exercise 3: Pregnancy and Human Development Questions A. When does fertilization occur?

Fertilization occurs one day post ovulation.

B. At what point does an embryo turn into a fetus? Describe what a baby looks like at this stage of development. An embryo turns into a fetus at the start of the second trimester (61 days post ovulation). At this point the baby is about 1in and the face has a human appearance. All the limbs, fingers and toes are present and nails begin to grow from the nail beds.

C. At what point is the brain fully developed? Describe the activities this allows the baby to do?
The brain is fully developed at 32 weeks allowing the baby to open its eyes.

D. What is “quickening”? What is Lanugo? Give a possible function for Lanugo? When do these two phenomena occur? Quickening is fetal movement (when the mother begins to feel it). Lanugo is “hair” that covers the surface of the baby it is probably used to help protect the skin from the amniotic fluid. It appears at 18

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