To carry the females DNA and to nourish the developing embryo
1 of 15
What does the egg contain which feeds the embryo?
nutrients in the cytoplasm
2 of 15
What happens straight after the egg is fertilized?
the eggs membrane changes structure to stop any more sperm getting in.
3 of 15
Is the eggs nucleus haploid or diploid?
Hapliod - so that when the egg is fertilized the embryo has the right number of chromosomes.
4 of 15
What are the functions of sperm?
to transport the males DNA to the females egg.
5 of 15
What is the name of the sperms tale?
Flagella
6 of 15
Is the males sperms nucleus haploid or diploid?
Hapliod - so that when the egg is fertilized the embryo has the right number of chromosomes.
7 of 15
What does FSH stand for?
folicle- stimulating hormone
8 of 15
What are the functions of FSH?
To cause a folicle (an egg and its surroundings) to mature in one of the ovaries and it stimulates the production of oestrogen.
9 of 15
What does LH stand for?
luteinising hormone
10 of 15
What is the function of LH?
It stimulates ovulation (day 14) it also stimulates the remains of the follicle to develop into a structure called a corpus luteum (which secretes progesterone).
11 of 15
What is the function of oestrogen?
It causes the lining in the uterus to thicken and grow, a high level stimulates an LH surge (a rapid increase).
12 of 15
What is the function of progesterone?
It maintains the lining of the uterus, It prevents the production of FSH and LH.
13 of 15
During a menstral cycle, the levels of different hormones in the blood is controlled by a...?
Negative feeback loop
14 of 15
After FSH has caused a follicle to mature, negative feedback loop keeps FSH...?
low, so that no more follicles mature.
15 of 15
Other cards in this set
Card 2
Front
What does the egg contain which feeds the embryo?
Back
nutrients in the cytoplasm
Card 3
Front
What happens straight after the egg is fertilized?
Comments
No comments have yet been made