أسئلة المحاضرة السابعة امبريولوجي (قبل التعديل)

The development of the nervous system, guided by the notochord, where the ectoderm thickens to form the neural tube and neural crest.

The central ectoderm elevates to form neural folds, which fuse to become the neural tube forming neural tissue.

A collection of cells that migrate and differentiate into various tissues like neurons, connective tissues, and pigment cells.

The neural tube forms the brain and spinal cord.

Birth defects caused by incomplete closure of the neural tube during embryonic development.

A neural tube defect that leads to the absence of the brain and parts of the skull.

A neural tube defect characterized by incomplete closure of the caudal neuropore, often affecting the spinal column.

A rod-like structure that induces the formation of the neural tube during neurulation.

The central part of the ectoderm thickens to form a neural plate, which is the precursor to the nervous system.

The edges of the neural plate elevate and bend upwards to create neural folds, which eventually fuse together.

The central depressed area between the neural folds forms the neural groove.

From the fusion of the neural folds, the neural tube is formed. This structure will develop into the brain and spinal cord.

These cells originate from the lateral edges of the neural plate at its junction with the rest of the ectoderm. They migrate and differentiate to form a variety of tissues throughout the body.

Folic acid (vitamin B9) supplementation during pregnancy can prevent 70% of neural tube defects.

The process of forming the nervous system from the ectoderm, guided by the notochord. It involves the neural plate, folds, and tube development.

The notochord is the inducer that signals the ectoderm to thicken and form the neural plate, leading to neural tube formation.

The neural crest, located at the edges of the neural plate, gives rise to various cell types like neurons, pigment cells, and connective tissues.

Incomplete closure of the neural tube during embryonic development can lead to birth defects like anencephaly and spina bifida.

A severe neural tube defect where the brain and parts of the skull are absent, resulting in incompatibility with life.

A neural tube defect where the spinal column doesn't close completely, leading to different types of severity.

Folic acid (vitamin B9) supplementation during pregnancy can reduce the risk of neural tube defects by 70%.

The bending of the trilaminar embryo upon itself ventrally, occurring in the 4th week due to rapid growth of the neural tube and mesoderm.

Folic acid (vitamin B9) supplementation during pregnancy can reduce the risk of neural tube defects by 70%.

The bending of the trilaminar embryo upon itself ventrally, occurring in the 4th week due to rapid growth of the neural tube and mesoderm.