EXAM WITH 100% ACCURATE
SOLUTIONS
What is the first stage of the menstrual cycle (that lasts 4-7 days) known as? - CORRECT✔✔Menstrual
Cycle
What is the second stage of the menstrual cycle (lasting 8-13 days) known as? - CORRECT✔✔Follicular
Phase
What is the third stage of the menstrual cycle, occurring at day 14, known as? - CORRECT✔✔Ovulatory
Phase
What is the final stage of the menstrual cycle known as? - CORRECT✔✔Luteal Phase
What occurs during the follicular phase of the menstrual cycle? - CORRECT✔✔FSH causes follicle
maturation in the ovary. Increased oestrogen causes the endometrium to thicken and become a
nourishing environment for a potential pregnancy.
Define Ovulation - CORRECT✔✔A period of heightened hormones where a dominant follicle releases an
egg into a Fallopian tube.
Which hormone is responsible for ovulation? - CORRECT✔✔LH (Luteinizing Hormone)
What happens during the luteal phase of the menstrual cycle? - CORRECT✔✔Oestrogen decreases,
progesterone increases due to the corpus luteum.
What happens during the menstrual phase of the menstrual cycle? - CORRECT✔✔Oestrogen and
progesterone decrease and the endometrial lining is shed.
, How long is an egg viable for following ovulation? - CORRECT✔✔1 day
What happens if an egg is not fertilised? - CORRECT✔✔Progesterone decreases, corpus luteum is
reabsorbed and FSH causes new follicles to start maturing.
Define capacitation - CORRECT✔✔The protective covering of the acrosome of the sperm is removed.
What sort of reaction begins when a sperm comes into contact with an egg? - CORRECT✔✔Cortical
reaction - cortical granules block any other sperm from entering the egg
How many chromosomes does a zygote contain? - CORRECT✔✔46, in 23 homologous pairs
How many cells does the merula have? - CORRECT✔✔8 to 16
How many cells does the blastocyst have? - CORRECT✔✔16 to 32
How many days after ovulation can implantation occur? - CORRECT✔✔6 to 10 days
Define decidualisation - CORRECT✔✔Progesterone increases, creating a hospitable environment for the
developing fetus.
What are trophoblasts? - CORRECT✔✔Cells on the outer layer of the blastocyst
What are integrins? - CORRECT✔✔Cell adhesion molecules that work in implantation.
What is the chorion? - CORRECT✔✔Fetal part of placenta made out of trophoblast cells
Which hormone causes skin pigmentation in pregnancy? - CORRECT✔✔Pituitary melanin-stimulating
hormone