Learning Activity # 13 - Chapter 20


 

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  1. Define pregnancy.


  2. Define neonatal period, postnatal period, fetal period, and embryonic period.


  3. During which period are the primary germ layers laid down?


  4. Where does fertilization take place?


  5. Tell when the following structures form: morula, blastocyst, zygote.


  6. What part of the blastocyst becomes part of the placenta?


  7. Define the following structures: ductus arteriosis, foramen ovale, and ductus venosus. Tell what each becomes after birth.


  8. What hormone levels go up in a woman during pregnancy?


  9. Define implantation. Tell where it normally occurs.


  10. Define cleavage as it pertains to pregnancy. Tell where it normally occurs.


  11. List the functions of the following hormones during pregnancy: aldosterone, oxytocin, relaxin, and prolactin.


  12. Describe the following structures and tell what they produce: yolk sac, placenta, amnion.


  13. Provide your name and code here.