PPT embryology- test 2 material

Question 1

Fetal Age AKA __________

Answer 1

(conceptional age)

Question 2

Menstrual age AKA _________

Answer 2

(gestational age)
from 1st day of last period

Question 3

Refers to the entire products of conception from fertilization onward (the embryo or
fetus and its membranes, placenta)

Answer 3

Conceptus

Question 4

Extends from the last menstrual period until birth (280 days)

Answer 4

Gestation period

Question 5

Also called conceptus, first two weeks following fertilization

Answer 5

Pre-Embryo

Question 6

From the third through the eighth week after

Answer 6

Embryo

Question 7

11th week (GA) through birth

Answer 7

fetus

Question 8

An infant less than four weeks old

Answer 8

Neonate

Question 9

The condition of having a developing embryo or fetus in the body
after the union of the oocyte and spermatozoon.

Answer 9

pregnancy

Question 10

Clinical Findings of Pregnancy

Answer 10

• • Beta hCG (4 weeks GA), some tests may pick up hCG hormone a
    little earlier
• Fetal heart tones (10-12 wks GA)
• Fetal movements (18-20 wks GA)
• Demonstrations of the fetus on ultrasound

Question 11

• The head of each sperm (acrosome) releases enzymes that begin to
  break down the outer, jelly-like layer of the egg’s membrane, trying to
  penetrate the egg.
• Fertilization of the ovum involves penetration of the sperm through
  the corona radiata, zona pellucida, completion of the second meiotic
  division of the secondary oocyte, and formation of the zygote.

Answer 11

Question 12

• Once a single sperm has penetrated, the cell membrane of the egg
  depolarizes its electrical characteristics.
• This creates a _______________________ that pushes the other sperm far away
  from the egg and ensures that only one sperm fertilizes the egg.

Answer 12

cortical reaction

Question 13

Fertilization usually occurs in the ___________of the fallopian tube.

Answer 13

ampulla

Question 14

how long after cortical reaction will other sperm die?

Answer 14

with in 48 hours

Question 15

how long does the fertilization process last?

Answer 15

24 hours

Question 16

More than _______ of all known
spontaneous abortions result
from chromosomal
abnormalities

Answer 16

50%

Question 17

out of 100 exposed ova know how many become:
zygotes
implant and produce hcg
abort promptly and persist

Answer 17

Question 18

stages of fertilization and onward

Answer 18

fertilization
zygote
cleavage
morula
blastocyst

Question 19

how long are eggs and sperm viable for

Answer 19

eggs