Lifecycle/Pregnancy

1
Lifecycle/Pregnancy
2
The Beginning of the Life Cycle
3
(No Transcript)
4
(No Transcript)
5
Conception An egg travels through the fallopian
tube after ovulation if a sperm makes its way
from the vagina through the uterus to the egg
within 72 hours, conception is likely to occur.
6
If sperm penetrates the egg and conception
occurs. It is called a zygote until it reaches
the uterus in 3-4 days.
7
The embryo may float freely in the uterus for
about 48 hours before implanting.
Upon implantation, complex connections between
the mother and embryo develop to form the placenta
8
What is the placenta?

• Answer a thick, blood rich tissue that lines the
  walls of the uterus during pregnancy and
  nourishes the embryo
• The umbilical cord connects to the embryo and the
  placenta
• The umbilical cord is a ropelike structure that
  connects the embryo to the mothers placenta
  BABYS LIFELINE

9
The Umbilical Cord

• Answer materials diffuse from one blood supply
  to the other through the umbilical cord.
• Nutrients and oxygen pass from the mothers blood
  to the embryo and wastes from the embryo diffuse
  into the mothers blood.
• Eventually, they are excreted.

10
Leaving the Womb

• A female goes through three stages of labor to
  deliver a baby. Labor can last for a few hours to
  several days.
• Stage 1 Dilation
• Stage 2 Passage through birth canal
• Stage 3 Afterbirth

11
Stage 1 Dilation

• Contractions of the uterus cause the cervix to
  dilate.
• Why can the uterus contract?
• Contractions will break the amniotic sac, the sac
  that surrounds the body.
• Only 25 of women experience their water breaking

12
Stage 2 Passage through Birth Canal

• Only when the cervix is fully dilated (10 cm),
  the baby passes through the birth canal (vagina)
  and emerges from the mothers body.
• Right after birth, the baby takes its first
  breath and cries to clear the lungs of amniotic
  fluid.

13
Stage 3 Afterbirth

• The placenta is still attached to the baby by the
  umbilical cord. Contractions continue until the
  placenta also called afterbirth, is pushed from
  the mothers body.

14
Prenatal Care

• Regular Docs Appointments once a month until
  full term (37 weeks) last month of pregnancy
  (once a week)
• Ultrasound (20 weeks)
• Determine sex, check for any abnormalities thus
  far
• Diet Numerous restrictions regarding food, drink
  and activity
• Avoid caffeine, alcohol, excessive weight gain,
  sushi, lunchmeat, raw meat, tobacco products,
  etc.