Process of
Fertilization
Fertilization
Name for Identical Twins
Monozygotic Twins
Name Presumptive Signs of Pregnancy
Amenorrhea; N/V; Skin Changes; Quickening; Breast Changes; Urgent/Frequent Urination; Change in Abdomen; Chadwick's Sign
What is surfactant and when is it produced?
Decreases surface tension of alveoli.
Produced between weeks 24 and 28; by 35 weeks most fetuses have enough naturally produced surfactant
Weeks 5 - 6
Beating heart
Limb buds appear
Side of placenta attached to uterine wall; dark red
Dirty Duncan (Maternal Side)
Name for Fratenal Twins
Dizygotic Twins
Name Probable Signs of Pregnancy
Hegar's Sign; Goodell's Sign; Ballottement; Positive Pregnancy Test; Braxton's Hick's Contractions; Striae
Fluid filled area that contains and protects the fetus in the womb?
Amniotic Sac
Weeks 7 - 8
Has face
Begins resembling human being
Shiny Schultze
How are Identical Twins created?
One egg + One Sperm. Fertilized egg splits into two
Name Positive Signs of Pregnancy
Palpation of fetal outline; Visualization of pregnancy (Fetus) by ultrasound; Fetal heartbeat
Basic Functions of Amniotic Fluid (4)
Physical Protection
Temperature Regulation
Allows area of unrestricted movement
Fetal Lung Development
Week 9
Referred to as a fetus until birth
Umbilical cord has how many veins and arteries?
1 Vein (oxygenated)
Two eggs fertilized by two separate sperm
What is Naegele's Rule?
Downy fine hair to assist with insulation and body temp; normal finding
Lanugo
Weeks 9 - 12
Gender can be determined (ultrasound)
Functioning kidneys
White, gelatinous substance that keeps the umbilical cord from compressing
Wharton's Jelly
Developmental timeline as fertilized cell progresses
Fertilized ovum is a Zygote. Day 5, called a Blastocyst. Once implanted, called an Embryo until week 8 and then at week 9 is called a Fetus.
How to use a Gestational Wheel?
Line up first day of LMP; hold wheel still; read off due date (40 weeks)
Protective gray-white, cheesy substance present on newborn's skin; normal finding
Vernix Caseosa
Weeks 16 - 20
Quickening (movements)
Placenta functions as an endocrine gland and secretes what 3 hormones to maintain pregnancy?
HCG
Estrogen
Progesterone