36 Questions
What are the three stages of labor?
Effacement and dilation of the cervix, delivering the fetus, delivering the placenta and fetal membranes
What name is given to the condition where there is too much space (fluid accumulation) in the amniotic cavity?
Polyhydramnios
What is the significance of having one amnion, one chorion, and one placenta for conjoined twins?
It indicates the twins are not truly identical
What stage of labor involves effacement and dilatation of the cervix?
First stage
What term is used to describe structural, behavioral, functional, and metabolic disorders present at birth?
Birth defects
What is the role of the placenta with respect to protecting the fetus from toxic factors?
It acts as a barrier and provides full protection
During which weeks of gestation does physiological umbilical herniation occur?
6th to 10th
What is the name of the defect associated with loops of bowel herniating into the umbilical cord?
Omphalocele
What type of membrane covers the bowel in an omphalocele?
Amnion
Which structure develops from visceral (splanchnic) mesoderm?
Septum transversum
What is the name of the cavity that forms between the septum transversum and the stalk of the yolk sac?
Intraembryonic body cavity
What is the name of the fold that forms when the cranial end of the embryo grows and curves?
Cranial neural fold
What structures hold the neural and gut tubes together during embryonic development?
Mesoderm
What is the space between the visceral and parietal layers of the lateral plate mesoderm called?
Primitive body cavity
Which structure forms the amnion that surrounds the embryo during development?
Lateral plate mesoderm
What can happen if the ventral body wall fails to close properly during development?
Ectopia cordis
Which layer of the lateral plate mesoderm forms the visceral layer of the serous membranes?
Visceral layer
What is the region of attachment between the gut tube and the yolk sac known as?
Vitelline duct
What condition occurs when loops of bowel fail to return to the body cavity during gestation?
Omphalocele
What is the name of the thick mesodermal tissue between the thoracic cavity and the yolk sac?
Septum transversum
Which membrane covers the bowel in an omphalocele?
Amnion
What structure forms the amnion that surrounds the embryo during development?
Septum transversum
What can be associated with an omphalocele, in addition to the actual herniation of the bowel?
Chromosome abnormalities
What is the name of the phase when loops of bowel herniate into the umbilical cord during gestation?
Physiological umbilical herniation
What is the term used to describe the process where the lateral body wall folds move ventrally and fuse in the midline?
Pleuropericardial folding
Failure of the ventral body wall to close properly during development can lead to which of the following defects?
Gastroschisis
Which structure forms the umbilical cord during development?
Connecting stalk
What is the space between the visceral and parietal layers of lateral plate mesoderm called?
Intraembryonic cavity
What defect is associated with loops of bowel herniating outside the abdominal cavity into the umbilical cord region?
Omphalocele
During development, which layer of mesoderm forms the visceral layer of the serous membranes covering abdominal organs?
Splanchnic mesoderm
What are the three stages of labor?
Effacement and dilatation of the cervix, delivery of the fetus, delivery of the placenta and fetal membranes
What term is used to describe disorders present at birth relating to structure, behavior, function, and metabolism?
Congenital anomalies
What structural feature is common in conjoined twins regarding the membranes and placenta?
One amnion, one chorion, and one placenta
What initiates the beginning of labor in most cases?
Signals that are not clearly understood
What is the medical term for the condition of fluid accumulation in the amniotic cavity as seen on an ultrasound?
Hydramnios
What is the role of the placenta concerning the protection of the fetus from toxic factors?
Acts as a selective filter for certain toxic substances
Learn about conjoined twins and the labor process during pregnancy. Understand the unique characteristics of conjoined twins, the stages of labor, and important considerations during pregnancy.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
