Repro Continued Flashcards
What do contraceptives do for a woman?
Prevent ovulation and release progesterone and some estrogen
What happens in IVF?
- FSH is administered
- Collect ova
- Collect sperm sample
- Ova and sperm combine in Petri dish in lab
- Women is administered progesterone to thicken and maintain endometrium
- Blastocytes are inserted into uterus for implantation
Why do contraceptives release progesterone?
Less LH is released
Where is oogenesis?
Ovaries
What is the sperm pathway?
Testes —> Epididymas —> Vas deference —> Ejaculatory duct —> Urethra
Which hormone develops secondary sexual characteristics?
Estrogen
Which structure in the testes are for spermatogenesis?
Seminiferous tubule
Explain process for the formation of sperm cells?
Hormone FSH signals process to Sertoli cells to begin developing spermatogonia (immature sperm cells)
What is mitosis?
Primary spermatocytes - Replication of chromosomes that produce identical cells
Explain meiosis in spermatogonia?
Secondary spermatocytes -
Haploid (23 chromosomes)
What does the testis do?
Secretes testosterone
What undergoes meiosis in the testis?
Germ cells
What does high concentrations of hCG in your blood mean?
Indicates pregnancy
What is the function of a placenta?
Site of exchange between mom and baby and secretes hormones
- half endometrium half chorion
What’s the function of an umbilical cord?
Transports nutrients and waste
What is the function of amniotic fluid?
Shock absorption and sterile environment
What two structures secrete hormones that support embryo?
Chorion and Plancenta
