5 Questions
What is the main cause of cephalocaudal folding in the embryo?
Lengthening of the neural tube
Which structure causes the head and tail regions of the embryo to move ventrally during cephalocaudal folding?
Neural tube
During which stage does the embryo curve into the fetal position due to cephalocaudal folding?
24 days
What is the role of lateral folding in the embryonic development?
Changes the embryo's position
Which membrane is affected by cephalocaudal folding?
Oropharyngeal membrane
Study Notes
Cephalocaudal Folding
- Main cause of cephalocaudal folding in the embryo: growth and rapid proliferation of cells in the germ layers
- Structure responsible for ventral movement of head and tail regions: notochord
Embryonic Development
- Cephalocaudal folding leads to the embryo curving into the fetal position during the late embryonic stage (around 8 weeks)
Lateral Folding
- Role of lateral folding in embryonic development: formation of the embryonic axes (anteroposterior, dorsoventral, and lateral) and establishment of the body shape
Affected Structures
- Membrane affected by cephalocaudal folding: amnion
Learn about the folding of the embryo and the derivatives of the endoderm in the embryonic period (3rd to 8th week) through this lecture. Understand the dorsal and ventral aspects of the embryo, as well as the development of the amniotic cavity and yolk sac.
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