Neuro Anatomy Flashcards
Cerebral Aqueduct
Connects 3rd ventricle to 4th ventricle.
Interventricular Foramen (of Monroe)
Connects lateral ventricles to 3rd ventricle.
Septum Pellucidum
Separates the two lateral ventricles.
Cingulate Gyrus
Gyrus located above the lateral ventricles.
Thalamus
Located next to the 3rd ventricle.
“Burger buns”
Caudate
Lateral to lateral ventricles. C shape.
Striatum
Caudate + Putamen
Lentiform Nucleus
Putamen + Globus Pallidus
Fornix
C shape. Makes mustache at anterior commissure.
Mamillary Bodies
Part of Hypothalamus
Flocculus
Rostral/Anterior Portion of the Cerebellum.
Uncus
Innermost portion of the Temporal Lobe. Can herniate and cause damage during intracranial bleeding.
Netrins
May be attractive or repulsive depending on receptor. Are long range signaling molecules in neurogenesis.
Semaphorins
May be long range or short range. Are repulsive.
White Matter Structures in CNS
- medial and lateral lemnisci
- cerebral and cerebellar peduncles
- funiculi
- fasciculi
- other axon tracts
Oligodendrocytes
- myelinate axons in the CNS only
- do not support axonal regeneration
- do not clean up debris
- upregulate molecules that inhibit axonal growth
Schwan Cells
- facilitate axonal regeneration and debris clean-up in the peripheral nervous system
- originate from the neural crest
Astrocytes
- mediate blood flow
- metabolize potassium
- form scar in CNS which provides a physical barrier that impairs axonal growth
- originate from neuroectoderm
- instruct endothelial cells to from BBB
- GFAP is astrocyte marker
Microglia
- macrophages of the nervous system
- microglial response is rapid and short-lived
- activate more chronic astrocyte response
- microglia release inhibitory factors which create poor environment for axonal regeneration in the CNS
- pharmacologic target
Nissl Bodies
- rough ER in cytoplasm of neurons
- make proteins from mRNA
Cajal
- discovered neurons as functional unit
- neuronal doctrine
Penfield
-electrical stim mapping
Hebb
-fire together, wire together plasticity
Kandel
-gene transcription changes plasticity