CK12 Life Science

(Marvins-Underground-K-12) #1

  1. Why doesn’t a doctor wait for a newborn baby to breathe on its own before cutting
    the umbilical cord?

  2. Explain how pituitary hormones control puberty in boys and girls.

  3. Compare and contrast puberty and adolescence.

  4. Why is it difficult to say when adulthood begins?


Further Reading / Supplemental Links


CK–12.org, High School Biology, Chapter 40, Lesson 3.



Vocabulary


adolescence Period of life between the start of puberty and the beginning of adulthood.


amniotic sac Fluid-filled membrane that surrounds and protects a fetus within the uterus.


childbirth Process through which a baby passes from the uterus, through the vagina, and
out of the mother’s body.


childhood Period between a baby’s first birthday and puberty.


embryo Stage of a developing baby between implantation and the end of the 8thweek after
fertilization.

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