Development Flashcards
(52 cards)
Protoplasmic astrocytes
Gray matter
Fibrous astrocytes
White matter
Ganglia
Collection of cell bodies
Projection fibers
Axons that travel up/down CNS
Association fibers
Axons that connect lobes (IPSILATERAL)
Commissural fibers
Axons that connect CONTRALATERAL lobes
Internuncial neurons
Interneurons - transmit AP between neurons
What makes up gray matter?
Collection of cell bodies, unmyelinated fibers, dendrites
What makes up white matter?
Myelinated fibers
Fasciculas
Small bundle of myelinated fibers
Funiculas
Several fasciculi - dorsal, lat, vent
Brachium
Thick bundle of funiculas connecting parts of brain
What happens in guillan barre?
De-myelinization
What ions are outside/inside cell for AP?
Outside = Na and Cl Inside = K
Where are amines created?
Presynaptic cytoplasm
Where are peptides created?
Cell body
What happens at week 2?
Implantation
Which comes first - primary streak or groove?
Streak
What layer of the trilaminar disc forms the neural crest?
Ectoderm
What three things does the neural crest turn into?
Sensory & ANS ganglia, glands
PNS!!!!!
The neural tube ends up being the……
CNS
Dermatomes differentiate into
Subcutaneous skin
Myotomes differentiate into
Skeletal muscles
Scleratomes differentiate into
Bones