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Paraxial mesoderm, also known as presomitic or somitic mesoderm, is the area of mesoderm in the neurulating embryo that flanks and forms simultaneously with the neural tube. The cells of this region give rise to somites , blocks of tissue running along both sides of the neural tube, which form muscle and the tissues of the back, including ...
Intermediate mesoderm or intermediate mesenchyme is a narrow section of the mesoderm (one of the three primary germ layers) located between the paraxial mesoderm and the lateral plate of the developing embryo. [1] The intermediate mesoderm develops into vital parts of the urogenital system (kidneys, gonads and respective tracts).
An elevated MSAFP measured at 16–18 weeks gestation is a good predictor of open neural tube defects, however the test has a very high false positive rate, (2% of all women tested in Ontario, Canada between 1993 and 2000 tested positive without having an open neural tube defect, although 5% is the commonly quoted result worldwide) and only a ...
The notochord extends beneath the neural tube from the head to the tail. The mesoderm moves to the midline until it covers the notochord. When the mesoderm cells proliferate, they form the paraxial mesoderm. In each side, the mesoderm remains thin, and is known as the lateral plate. The intermediate mesoderm lies between the paraxial mesoderm ...
Inflammatory demyelinating diseases (IDDs), sometimes called Idiopathic (IIDDs) due to the unknown etiology of some of them, are a heterogenous group of demyelinating diseases - conditions that cause damage to myelin, the protective sheath of nerve fibers - that occur against the background of an acute or chronic inflammatory process.
[25] [21] As such, it is seen by experts that tail loss has contributed to the existence and frequency of developmental defects in the neural tube and sacral region. Primarily, spina bifida and sacral agenesis are the most likely suspects due to their direct relation to lumbar development . [ 22 ]
Axial mesoderm, or chordamesoderm, is the mesoderm in the embryo that lies along the central axis under the neural tube. will give rise to notochord starts as the notochordal process , whose formation finishes at day 20 in humans.
Spinal stenosis is an abnormal narrowing of the spinal canal or neural foramen that results in pressure on the spinal cord or nerve roots. [6] Symptoms may include pain, numbness, or weakness in the arms or legs. [1]