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Questions and Answers
What covers the fully formed umbilical cord externally?
What covers the fully formed umbilical cord externally?
- Mesoderm
- Amniotic membrane (correct)
- Chorion
- Endoderm
During which week does the two-layered embryonic disc transform into a three-layered embryo?
During which week does the two-layered embryonic disc transform into a three-layered embryo?
- Week 3 (correct)
- Week 2
- Week 1
- Week 4
What process involves cellular rearrangements and migrations during embryonic development?
What process involves cellular rearrangements and migrations during embryonic development?
- Fertilization
- Implantation
- Gastrulation (correct)
- Cleavage
Which structure establishes the longitudinal axis of the embryo during gastrulation?
Which structure establishes the longitudinal axis of the embryo during gastrulation?
What do the first cells entering the primitive streak form?
What do the first cells entering the primitive streak form?
Which germ layer is formed when surface cells migrate medially and enter the primitive streak?
Which germ layer is formed when surface cells migrate medially and enter the primitive streak?
Why is heartburn common during pregnancy?
Why is heartburn common during pregnancy?
What are teratogens in the context of pregnancy?
What are teratogens in the context of pregnancy?
How does alcohol consumption during pregnancy affect the fetus?
How does alcohol consumption during pregnancy affect the fetus?
Why does smoking during pregnancy hinder fetal growth?
Why does smoking during pregnancy hinder fetal growth?
What is the reason behind increased urine production by the kidneys during pregnancy?
What is the reason behind increased urine production by the kidneys during pregnancy?
Why should a pregnant woman be cautious about what she consumes, especially during the embryonic period?
Why should a pregnant woman be cautious about what she consumes, especially during the embryonic period?
What vessel allows most blood to bypass the lungs in a fetus?
What vessel allows most blood to bypass the lungs in a fetus?
After birth, which vessel becomes the ligamentum arteriosum?
After birth, which vessel becomes the ligamentum arteriosum?
What structural change occurs in the heart at birth?
What structural change occurs in the heart at birth?
Which vessel is responsible for carrying oxygenated blood to the fetus's liver?
Which vessel is responsible for carrying oxygenated blood to the fetus's liver?
What structure in the heart helps direct blood flow directly from the right atrium to the left atrium in a fetus?
What structure in the heart helps direct blood flow directly from the right atrium to the left atrium in a fetus?
During which period are body structures rapidly growing and differentiating into specific cell types?
During which period are body structures rapidly growing and differentiating into specific cell types?
Why does the uterus synthesize additional contractile machinery, including actin and myosin?
Why does the uterus synthesize additional contractile machinery, including actin and myosin?
What leads to the formation of gap junctions between myometrial cells as labor approaches?
What leads to the formation of gap junctions between myometrial cells as labor approaches?
Why do Braxton Hicks contractions occur as labor approaches?
Why do Braxton Hicks contractions occur as labor approaches?
What is the function of myosin light chain kinase in the uterus?
What is the function of myosin light chain kinase in the uterus?
Why do some women experience difficult breathing during pregnancy?
Why do some women experience difficult breathing during pregnancy?
What is the role of hPL hormone in pregnancy?
What is the role of hPL hormone in pregnancy?
Why are premature infants usually put on a ventilator?
Why are premature infants usually put on a ventilator?
What physiological functions are assessed to determine an Apgar score?
What physiological functions are assessed to determine an Apgar score?
What does an Apgar score of 8 to 10 indicate?
What does an Apgar score of 8 to 10 indicate?
During the transitional period after birth, what marks the unstable phase?
During the transitional period after birth, what marks the unstable phase?
Why do premature infants have difficulty keeping their lungs inflated?
Why do premature infants have difficulty keeping their lungs inflated?
Why are the special umbilical blood vessels and fetal shunts occluded after birth?
Why are the special umbilical blood vessels and fetal shunts occluded after birth?
