Female Repro Flashcards
Function of Amniotic fluid
-Acts as an shock absorber
- It prevents dehydration
-facilitates free movement for the foetus
Describe the development of the zygote until implantation occurs
-The zygote divides by mitosis
-to form a solid ball of cells
-called morula
-which develops into a hollow ball of cells
-called blastula
Stage the ways in which Chorionic Villi functions in protecting the developing foetus
-Produces antibodies
-Maintains the endometrium
-Protects against pathogens
Describe how the nutrition of a human fetus differ from that of a oviparous organism
-In humans the developing fetus receives nutrients from the mother’s blood, via the placenta
-In oviparous organisms the developing embryo receives nutrients from the yolk
Function of Fallopian Tube
-The site of fertilization
State ways in which the uterus is suited for its function during pregnancy
-It has a mascular wall
-it has a rich-blood lining
A person undergoes a surgical operation to remove her ovaries, explain why this person will not menstruate
-No follicle will develop
-No oestrogen produced
-and no progesterone produced
-Therefore the endometrium will not develop to be shed during menstruation
The Hormone responsible for the formation of the Corpus Luteum
LH/Luteinizing hormone
Describe how Chorionic Villi is formed
-The Chorion forms Chorionic Villi and attaches to the endometrium
Explain the endocrine role of the Chorionic Villi during gestation
-Secretes progesterone, which futher increases the thickness of the endometrium, making it more glandular and vascular
Differences between Umbilical artery and Umbilical vein
-Umbilical Artery , Carries deoxygenated blood from the fetus to placenta
-Umbilical vein, Carries oxygenated blood from the placenta to foetus
Where nutrients diffuse from the mothers blood to the fetal blood
Placenta
Stretches or dilates to allow the foetus to be expelled during childbirth
-Vagina
-Cervix
Protects the foetus against temperature changes
Amniotic fluid
Explain how the formation of the degenerated corpus luteum will lead to the start of the next menstrual cycle
-The degeneration of the Corpus luteum, leads to the decrease in progesterone
-The endometrium is no longer maintained
-thus FSH increases
Why will a blockage of the cervix lead to infertility
Sperms will not be able to reach ova in fallopian tube
Why foetus would die if the Umbilical vein was blocked
Foetus will not receive nutrients and oxygen from placenta
The roles of the hormones produced the ovary during menstruation
-Oestrogen, thickens the endometrium in preparation for the implantation
-progesterone futher thickens the endometrium to maintain pregnancy
