Conception, pregnancy

Question 1

a sperm has to arrive at the
secondary oocyte ???-???hrs after
ovulation, or the oocyte dies

Answer 1

12-24hrs

Question 2

sperm travel ??? cm through
the female reproductive tract to get
to the oocyte

Answer 2

12 cm

Question 3

do sperm need to be
capacitated whilst traelling through female reproductive system?

Answer 3

YES

Question 4

sperm capacitation is the process of removing ??? and ??? to enhance mobility

Answer 4

layers & activation

Question 5

sperm bind to the zona pellucida (glycoprotein membrane of secondary oocyte) which causes release of their ??? enzymes

Answer 5

acrosomal enzymes

Question 6

Oocyte sperm binding
receptors are shed and cortical granules are released once a ??? has fused with the ???

Answer 6

sperm has fused with the oocyte

Question 7

TRUE or FALSE: the conceptus (embryo) will not develop beyond a blastocyst unless endometrium wall is primed

Answer 7

TRUE

Question 8

what type of trophoblast invade & erode the endometrium so that the conceptus
sits within a pool of endometrial blood- the the cyto-trophob lasts or Syn-cytio-trophoblasts?

Answer 8

Syn-cytio-trophoblasts

Question 9

trophoblast cells are cells on the outside of the ???

Answer 9

blastocyst

Question 10

human chorionic gonadotropin (hCG) are produced by ??? when endometrium seals over the blastocyst

Answer 10

trophoblasts

Question 11

amnioptic caivty happens to whcih part of the blastocyst?

Answer 11

the inner cell mass

Question 12

TRUE or FALSE: Cells from the inner cell mass form the chorion, which is the foetal part of the placenta
– The chorion takes over production of
hCG (remember this keeps the corpus
luteum alive)

Answer 12

TRUE