Match each term with its definition or description.
a. zygote
b. morula
c. blastocyst
d. placenta
e. fetus
f. embryo
g. ectoderm
h. mesoderm
i. endoderm
j. histogenesis
k. amniotic cavity
l. implantation
m. organogenesis
n. fertilization
o. yolk sac
1. _____ Connecting “bridge” between mother and baby
2. _____ Term used to describe the developing baby during the first 8 weeks
3. _____ Term used for the fertilized egg
4. _____ Term used to describe the development of tissues
5. _____ Term used to describe the developing baby from week 9 to week 39
6. _____ Term for the solid mass of cells formed by the fertilized egg about three days after fertilization
7. _____ Primary germ layer that forms the lining of the gastrointestinal tract
8. _____ Term for the hollow ball of cells the fertilized egg has formed by the time it reaches the uterus
9. _____ Primary germ layer that forms the brain and spinal cord
10. _____ Primary germ layer that forms muscles
11. _____ Moment when the ova and sperm unite
12. _____ Embedding of the blastocyst into the uterine wall
13. _____ Source of nutrients in birds, but produces blood cells in humans
14. _____ Fluid-filled shock-absorbing sac sometimes called the bag of waters
15. _____ Process by which tissues arrange themselves into organs
1. d. placenta
2. f. embryo
3. a. zygote
4. j. histogenesis
5. e. fetus
6. b. morula
7. i. endoderm
8. c. blastocyst
9. g. ectoderm
10. h. mesoderm
11. n. fertilization
12. l. implantation
13. o. yolk sac
14. k. amniotic cavity
15. m. organogenesis
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Indicate whether the statement is true or false