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2.1 One Pager Female Reproduction MEMO

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Oogenesis: Female reproductive

Pituitary gland  Under the influence of FSH


(Hypophysis)  diploid cells in the Germinal layer undergo Mitosis
to form numerous follicles
system
. LH
 One cell inside a follicle enlarges and undergoes
Meiosis A FSH B
 Of the four cells that are produced, only one
survives to form a mature, Haploidovum
Hormone B:LH (± day 14)
Function:Causes the follicle FALLOPIAN TUBE

Increase
to rupture / burst open (46 Chromosomes) (Fertilisation occurs here)
7 ZYGOTE
C Oestrogen
(CAUSES OVULATION)
Progesterone D
(23 Chromosomes)
SPERM .
Hormone A: FSH .
Function: Stimulates FERTILISATION .Y
development of the follicle
.
A human egg cell / ovum (23 chromosomes)
Hormone D: PROGESTERONE
Jelly OVUM / Egg 6 . Function:Maintains Explain why the graph indicates the menstrual
layer pregnancy cycle of a pregnant female.
Nucleus
OVULATION X •
Corpus luteum • Corpus luteum enlarges / gets bigger
Cyto- Cell membrane
plasm
Follicle • Progesterone levels increases No menstruation
Z menstuation
• High progesterone levels keep the endometrium
intact / prevents shedding of the endometrium
Explain whether the follicle development Hormone C: OESTROGEN 2 UMBILICAL CORD
inside the ovary represents that of a pregnant female. Function:Builds up (thickens) the Name the blood vessels found inside part 2.
Endometrium... Prepares the Also mention what it transports.
• The corpus luteum inside the ovary enlarges (gets bigger) Endometrium for pregnancy • Umbilical Vein- transports Food and oxygen to the

• and will continue to release (more) progesterone, to maintain foetus… from the placenta
pregnancy… Yes, represents a pregnant female 2
• Umbilical Artery (‘A for away’) transports CO and
AMNION 5 other waste substances away from the foetus
Describe the negative feedback mechanism between Protective function
hormone A and hormone D. 3 AMNIOTIC FUID
• High levels of progesterone inhibits secretion of FSH 4 CHORION Functions: Protects the foetus by…
Explain which hormone/s is given during fertility • Keeping the temperature constant
• Preventing the development of follicles during pregnancy
treatment to a lady who’s struggling to conceive. • Absorb mechanical shock (shock absorber)
Describe the development of a human foetus from • FSH will be given
• Keeps the skins moist / prevents desiccation of skin
fertilisation until birth (Gestation). • High levels of FSH stimulates development of follicles
The zygote divides by mitosis many times to form an embryo. It Explain the consequences of a sharp drop in the • Allows for growth and movement
first consists of a ball of cells, called the morula, which then hormone Progesterone during pregnancy. Mention the functions of part Z (PLACENTA)
develops into a hollow ball of cells, called the • The wall of the endometrium will shed • Supplies food and O2to the foetus
blastula/blastocyst. It embeds itself into the uterus
lining/endometrium, using chorionic villi. Develops into a foetus, • Embryo / foetus detaches from the uterus • Removes CO2 and other waste products from the foetus
attached to the placenta, by the umbilical cord. • Person will experience a miscarriage • Provides Progesterone

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