Vocabulary - Introductory material

Question 1

female germ or sex cell produced in the ovaries

Answer 1

oocyte (egg)

Question 2

male germ or sex cell produced by the testes

Answer 2

sperm (spermatozoon)

Question 3

cell formed by the union of the oocyte and a sperm; is the beginning of a new human being

Answer 3

zygote

Question 4

the developing human during early stages of development

Answer 4

embryo

Question 5

the developing human after the embryonic period

Answer 5

fetus

Question 6

the embryo and its associated membranes (amnion, chorionic sac, yolk sac)

Answer 6

conceptus

Question 7

the beginning of first discernible indication of an organ or structure

Answer 7

primordium

Question 8

3 month period (this is how obstetricians commonly divide the the 9 month period of gestation)

Answer 8

trimester

Question 9

period from conception (zygote formation) to the end of the 8th week

Answer 9

embryonic period

Question 10

period from the 9th week to intrauterine life/birth

Answer 10

fetal period

Question 11

the science concerned with the origin and development of a human being from a zygote to birth of an infant.

Answer 11

embryology

Question 12

what are two important phenomena that happen during the embryonic period?

Answer 12

1) organogenesis and 2) at greatest risk for teratogenesis/congenital abnormalities

Question 13

specifically (in weeks) when an embryo’s greatest susceptibility to teratogens?

Answer 13

3-8 weeks