Lecturio 1 The Neural Tube and Neural Crest Cells (Nervous System Development) Flashcards
Several regions of the nervous system (the CNS, eye, ear) form through the invagination of ____ into the underlying mesoderm.
ectoderm
Neural crest cells migrate throughout the body but often form into structures of ____, seeking connections to the central nervous system.
the peripheral nervous system
Neural tube is formed from __
the epiblast, which then migrates into the mesoderm.
Neural crest cells, also from ___, follow the neural tube into the mesoderm.
the epiblast
Another name for the neural tube
neuroectoderm
The neural tube, also called neuroectoderm, will give rise to ___
the central nervous system: the cortex, brainstem, and spinal cord.
Neural Crest Migration
→ Identify
Neural Crest Migration
The neural crest cells migrate all over the body and differentiate into a wide variety of cells.
→ The first wave of migration will form ___ (3)
- sympathetic and parasympathetic ganglia
- chromaffin cells of the adrenal medulla.
Neural Crest Migration
The neural crest cells migrate all over the body and differentiate into a wide variety of cells.
→ The second wave will form ___ (3)
- the posterior root ganglia
- supporting cells: Schwann cells and satellite cells.
Neural Crest Migration
The neural crest cells migrate all over the body and differentiate into a wide variety of cells.
→ The final wave will form the____
melanocytes that distribute themselves throughout the epidermis and elsewhere
Neural Crest Cells in the head and neck
→ Neural crest cells from more cranial locations will form ____
the sensory ganglia of the cranial nerves.
Neural Crest Cells in the head and neck
→ Identify
Neural Crest Cells in the head and neck
→ Neural crest cells Migrate into ____ to contribute mesenchyme to the face, neck and into the developing heart to separate the chambers of the heart and outflow tracts
the pharyngeal arches
Neural Crest Cells in the head and neck
→ Neural crest cells Migrate into the pharyngeal arches to contribute ____ and into the developing heart to separate the chambers of the heart and outflow tracts
mesenchyme to the face, neck
Neural Crest Cells in the head and neck
→ Neural crest cells Migrate into the pharyngeal arches to contribute mesenchyme to the face, neck and into____
the developing heart
(to separate the chambers of the heart and outflow tracts)
What does the 2 color parts represent?
Neural Crest Cells in the head and neck
→ identify
What does the green part represent?
Neural crest mesenchyme
