Flashcards in Development Of NS Deck (18):
From what do the brain and SC (CNS) originate?
What type of embryonic cells does the NS (and skin) derive?
From what do PNS neurones originate?
What embryonic cells form somites?
What do somites develop into?
Vertebrae of SC and skeletal muscles
What forms in initial differentiation?
- PROSENCEPHALON (forebrain)
- Mesencephalon (midbrain)
- RHOMBENCEPHALON (hindbrain)
Further differentiation forms secondary vesicles. What are the secondary vesicles of the forebrain (prosencephalon)?
Optic vesicles ---> optic nerve
Telencephalon ---> cerebral hemispheres
The roof (dorsal surface) of the mesencephalic vesicle becomes?
(Superior and inferior colliculus )
The floor of the midbrain becomes?
(Substantia nigra and red nucleus)
What secondary vesicle is the rostral half of the hindbrain that develops into the pons and cerebellum?
Myelencephalon is the caudal half of the hindbrain and develops into?
What part of the SC is the grey matter between the dorsal and ventral horns involved in autonomic control?
Thalamus and hypothalamus are derived from?
Surface of brainstem attached to cerebellum is the ventral or dorsal surface?
Groups of cell bodies in the CNS form a?
Groups of axons in PNS?
Group of cell bodies in PNS?
Group of axons in CNS?