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19 Cards in this Set
- Front
- Back
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Name the site the ova matures in |
Ovary |
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What is the function of the follicle? |
Protects the developing ovum and secretes hormones |
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What is the site of fertilisation in females? |
Oviduct |
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What is fertilisation? |
The fusion of the nuclei of two haploid gametes to form a diploid zygote which divides to form an embryo |
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What is the length of the average menstrual cycle? |
28 days |
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What is the first phase of the menstrual cycle? |
Follicular phase |
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What is the effect of FSH on the ovary? |
Stimulates the development of follicle and oestrogen production |
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What hormone is produced by the follicle? |
Oestrogen |
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What are the effects of oestrogen? |
Stimulates proliferation of the endometrium and secretes LH |
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Why does the consistency of the cervical mucus change during the follicular phase? |
To make it more easily penetrated by sperm |
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What happens to LH levels following peak levels of oestrogen? |
LH levels surge |
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What event follows a surge LH? |
Ovulation |
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What is ovulation? |
Ovulation is the release of an egg from a follicle in the ovary |
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What is the second phase of the menstrual cycle? |
Luteal Phase |
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What structure forms when the follicle breaks down? |
Corpus Luteum |
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What is the effect of progesterone? |
Promotes further development and vascularization of the endometrium, preparing it for implantation. |
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What are the ovarian hormones and what are the pituitary hormones? |
Ovarian hormones- Oestrogen, progesterone Pituitary hormones- FSH, LH |
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Describe the negative feedback effect of the ovarian hormones |
Ovarian hormones inhibit the secretion of pituitary hormones , preventing follicles from developing. Lack of LH leads to break down of corpus luteum and drop in progesterone levels, leading to menstruation |
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What is the effect on the corpus luteum and progesterone levels of fertilisation occurs? |
Corpus luteum does not break down and progesterone levels remain high |
