Embryology photos etc
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Transcript of Embryology photos etc
EMBRYOLOGY
Janet J. Nelson RN
Rarest Footage of Fetal Development
• http://www.ehd.org/playlist-movies.php?list=5
ACROSOME
ACROSOME destroys Corona Radiate
Contact with Zona Pellucida=Fertilization
EMBRYO DEVELOPMENT 1
Zona pellucida
CLEAVAGE
Morula
BLASTOCYST
EMBRYO DEVELOPMENT 2
• http://www.ehd.org/movies.php?mov_id=5
• View each of the slides in 0-2wk• http://www.ehd.org/science_main.php?level=
i (view movie the first week and
CLEAVAGE
MORULA- DAY 2
IMPLANTATION-Day 8 Notice the chorionic villi
PLACENTA & UMBILICAL CORD
ECTOPIC PREGNANCY
• 9-Week Human Embryo from Ectopic Pregnancy
Teratogen
In the Iate 1950s a German company launched thalidomide, marketed as a cure for morning sickness . Many fetal deaths resulted and a large range of disabilities, typically short limbs and flipper-like arms as well as deafness and blindness.
FAS
• http://www.nofas.org/MediaFiles/PDFs/factsheets/everyone.pdf
• S&S http://www.nofas.org/MediaFiles/PDFs/factsheets/identification.pdf
Folic Acid
• http://www.marchofdimes.com/pregnancy/folicacid.html
AMNIOTIC SAC AND UMBILICAL CORD
UMBILICAL CORD
AMNIONIC SAC
FINGERS AND TOES
FIRST TRIMESTER
Week 4-6
• http://www.ehd.org/movies.php?mov_id=8
Vernix Caseosa
What is the function of Vernix Caseosa?
LANUGO
• This soft prenatal hair is called lanugo hair. Most of the time, most of this hair is shed during the 7th or 8th month of pregnancy. Sometimes it is still present for a few months after birth, especially in babies born early.
Effacement
The cervix effaces and thins out in the final weeks of pregnancy. As labor progresses the cervix dilates from 0 centimeters to 10 centimeters
Engagement or LighteningThis is the fetus descending into the lower pelvis. Mom will feel an increased pressure in the lower abdomen and notice that the baby is gradually dropping. Mom is relieved to find it much easier to breath.
Early Stage I
• This is usually the longest phase of labor. However, contractions tend to last less than a minute with five or more minutes between contractions. These contractions thin and begin to open the cervix. Most women maintain normal activity
Active Stage IDuring this phase, the cervix dilates from four to seven centimeters. Women are more actively involved in the work of labor. Contractions grow progressively stronger and longer during this time, lasting 40-60 seconds or more and coming every two to five minutes.
Transition• Transition:This is
usually the hardest phase of the first stage of labor, but often the shortest. This phase completes dilation of the cervix to 10 cm. Contractions are very intense, lasting 60-90 seconds and occurring as close as every two minutes.
• Crowning occurs.
Episiotomy
BREECH Presentation
Placenta Delivery
TWINS
Fraternal twins develop when two eggs are fertilized by two sperm.
Identical twins are formed from one fertilized egg that splits into two identical halves after conception.
AMNIOCENTESIS
CHORIONIC VILLUS SAMPLING