Encompasses the following:
1. Fertilization
2. Implantation
3. Embreyo
4. Fetus
5. Parturition
I. Fertilization
Sperm: 300-500 million introduced into vagina.
a. acrosome secreted acrosine to cause sperm to move towards ovaries
b. Many sperm reach the mature ovum, but usu. only penetrate and fertilizes
c. Syngamy: when sperm penetrates corona radiation surrounding egg.
d. Approximately 1/2 sperm carry and X chromosome and 1/2 carry and Y chromosome.
II. Implatation
Attachment of the blastocyst to the endometrium
a. after fertilization cell begins to divide (mitosis)
b. Blastocyte
Other possibilites:
1. In-vitro Fertilization (IUF)
2. Embryo Transfer
III. Embryonic Growth
a. First two months
b. Human called embreyo
c. Embryology is the study of development from the fertilized egg to the 8th week in uterus
IV. Fetal Growth
a. Development of fetus from two months until birth.
b. Body systems begin to develop
V. Parturition
Labor
-progesterone levels fall which allow for involutnary muscle contrzations
True Labor:
1. contractions @ regular intervals
2. intervals b/w contractions shorten
3. Dilation of cervix: blood discharge
False Labor:
1. None of above
2. Pain/contractions not regular
3 Stages of Labor
1. Stage of dilation
-cervix dilates (max 10 cm)
- amniotic sac raptures (water breaks)
2. Stage of expulsion
-delivery of baby
3. Placental Stage
-After birth until placentia is expelled our of the baby via powerful contractions.
