Shared Flashcard Set

Details

Week 4 - Monday
Limbic system, hippocampus, amygdala
6
Medical
Professional
05/27/2008

Additional Medical Flashcards

 


 

Cards

Term
Hippocampal formation
Definition

1. Dentate gyrus - 3 layers

2. Hippocampus (Cornu Ammonis) - 3 layers

3. Subiculum 

Term
Dentate gyrus layers
Definition

Molecular layer

Granule cell layer

Polymorph later (hilus) 

Term
Hippocampus cell layers
Definition

Stratum radiatum

Pyramidal cell layer

Stratum oriens 

Term
Subdivisions of hippocampus
Definition
Dentate -> CA3 -> CA2 -> CA1 -> subiculum
Term
Hippocampal pathway
Definition

1. Entorhinal cortex -> dentate gyrus

//PERFORANT PATH// 

Entorhinal cortex-> hippocampus (small)

2.  dentate gyrus (granule) -> CA3

//MOSSY FIBERS// 

3. CA3 (pyramidal) -> CA1

//SCHAFFER COLLATERALS// 

CA3 (pyramida) -[fornix]-> hippocampus

4.  CA1 -> subiculum

5. subiculum -> entorhinal cortex -> cortical association sites 

Term
Hypothesized sequence of events for temporal lobe epilepsy resulting from axonal reorganization in the hippocampus
Definition

1. Hilar (polymorph, PM) neurons normally innervate the inner molecular layer of the dentate gyrus

2. Hilar & CA3 neurons are severely depleted in pt w/ temporal lobe epilepsy. Granule cells lost sites of termination

3. Granule cells send zxon collaterals and innervate these vacated synaptic sites. --> hyperexcitability 

Supporting users have an ad free experience!