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What do the ovaries produce?
They produce gametes! produce secondary oocytes (an egg before its an egg) & hormones: progesterone, oestrogens, inhibin & relaxin
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What is transported through the uterine tubes?
transport a secondary oocyte to the uterus (where fertilisation will occur)
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What 3 things occur in the uterus?
Site of implantation of a fertilised ovum, development of foetus during pregnancy, labour
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What 2 actions occur in the vagina?
Receives the penis during intercourse, the passageway for childbirth
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What 3 actions do the Mammary Glands perform?
synthesize, secrete and eject milk for nourishment of newborn
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what is a gamete? what are they in a f/m?
an organisms reproductive cells/'sex cells.' f: egg, m: sperm
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what is a secondary oocyte?
the egg before fertilisation! develop into mature ova (eggs) after fertilisation
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what 4 hormones are produced in the ovaries?
progesterone, oestrogen, inhibin & relaxin
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What is a blastocyst?
developing embryo, . called a blastocyst at 7 days after of fertilisation
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Why is a secondary oocyte haploid?
Because the primary oocyte undergoes meiosis!!!
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Tell me what Haploid means
contains a single set of chromosomes. (23) Organisms that reproduce asexually are haploid (2 sets of chromosomes, 1 from each parent). In humans, only our gametes are haploid
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Define diploid
Contains 2 sets of each chromosome (2n=46 chromosomes).
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Define germ cell/germinal cell
Germ cells give rise to the sex cells, which contain only half the number of chromosomes in a somatic cell. A somatic cell: any cells besides the sex cells!
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What is oogenesis?
the formation of gametes in the ovaries (the making of ova!)
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primary versus secondary oocytes
Primary oocyte is a diploid cell formed in foetal ovary when the gamete mother cell, oogonia is arrested at prophase-I of meiosis. Secondary oocyte is the haploid cell formed from primary oocyte that completes its first meiotic division, during puberty and produces the female gamete ova(n)
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what are some gonadotrophins?
sex hormones made & released by the anterior pituitary. E.g. LH, FSH
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whats a graafian folicle
ovum! haploid female reproductive cell! gamete!
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tell me about a zygote
union of sperm cell (23) and egg cell (23)
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