Neural tube
Neural Tube
The neural tube is the structure in mammalian embryos that develops into the brain and spinal cord. It forms from the ectoderm layer during development and gives rise to the central nervous system.
The neural tube develops into the brain and spinal cord during embryonic development.
if measurement of neural tube is greater than 2.5mm indicates down syndrome
Alpha-fetoprotein (AFP) is a substance that is measured in the maternal serum when a neural tube defect is suspected. High levels of AFP may indicate a neural tube defect in the fetus.
Neural tube.
The neural tube closes around the 28th day of gestation, so that would be at the end of the fourth week.
Nervous Tissue
In the embryo the neural tube forms the central nervous system in the fetus, which is the brain and spinal cord. The reason pregnant women are given folic acid supplementation is to help prevent neural tube defects, which can range from fairly benign all the way to anencephaly (where the baby is born without a brain).
Neural Tube
The neural tube