Development of the Nervous System

The ventral thickening of the mantle layer, containing ventral motor horn cells that form the motor areas of the spinal cord.

The dorsal thickening of the mantle layer, forming the sensory areas of the spinal cord.

A longitudinal groove marking the boundary between the basal and alar plates.

The midline portion of the neural tube on the ventral side, with no neuroblasts but pathways for nerve fibers.

The midline portion of the neural tube on the dorsal side, with no neuroblasts and pathways for nerve fibers.

A group of neurons found between the ventral motor horn and dorsal sensory horn, containing neurons of the sympathetic nervous system (ANS).

Mature nerve cells that arise from multipolar neuroblasts.

Primarily found in the marginal layer, these cells form the myelin sheath around axons.

Primitive supporting cells that differentiate into astrocytes and oligodendrocytes.

Phagocytic cells that appear in the second half of CNS development.

The process of cell differentiation and migration, leading to the formation of specialized tissues and organs.

The outer layer of the embryo that develops into the nervous system, skin, and other structures.

The portion of the ectoderm that gives rise to the central nervous system, including the brain and spinal cord.

A tube-like structure formed from the neuroectoderm, which develops into the brain and spinal cord.

A specialized group of cells that migrate from the neural tube and contribute to the development of various structures.

The part of the ectoderm that forms the outer layer of skin, hair, nails, and more.

A structure formed during brain development, which eventually develops into the retina of the eye.

The portion of the optic vesicle that connects the optic cup to the forebrain, eventually becoming the optic nerve.

The outermost layer of the developing spinal cord, containing nerve fibers.

The three primary germ layers that form during embryonic development: ectoderm, mesoderm, and endoderm.

The middle layer of the developing spinal cord, which forms the grey matter.

A flexible rod-like structure found in chordate embryos that provides support, defines the body axis, and guides development of the nervous system and vertebrae.

The process of forming the neural tube, which eventually becomes the brain and spinal cord.

The openings at the cranial and caudal ends of the neural tube during neurulation.

The failure of the anterior neuropore to close during neurulation, resulting in a brain developing outside of the skull.

The failure of the neural tube to close completely, resulting in a gap in the vertebrae and potential protrusion of spinal cord, nerves, and meninges.

A condition where the neural crest cells detach from the ectoderm and migrate to various locations in the body, contributing to the development of various structures.

The hollow space within the neural tube that eventually becomes the ventricular system and central canal.

The three primary germ layers that form during embryonic development: ectoderm, mesoderm, and endoderm.

The outer layer of the embryo that develops into the nervous system, skin, and other structures.

A flexible, rod-like structure found in chordate embryos that provides support, defines the body axis, and guides development of the nervous system and vertebrae.

The process of forming the neural tube, which eventually becomes the brain and spinal cord.

The openings at the cranial and caudal ends of the neural tube during neurulation.

The failure of the anterior neuropore to close during neurulation, resulting in a brain developing outside of the skull.

The failure of the neural tube to close completely, resulting in a gap in the vertebrae and potential protrusion of spinal cord, nerves, and meninges.

A specialized group of cells that migrate from the neural tube and contribute to the development of various structures.

The hollow space within the neural tube that eventually becomes the ventricular system and central canal.

The part of ectoderm that forms the outer layer of skin, hair, nails, and more.

The process by which cells differentiate and migrate to form specialized tissues and organs. This involves the establishment of the neural tube, a crucial structure for the development of the central nervous system.