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10 Questions

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Limbic System and Its Components

Created by

@ThrivingTuba

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Questions and Answers

What is another name for the limbic system?

Frontal cortex

Occipital lobe

Rhinencephalon (correct)

Cerebellum

Which component is NOT part of the limbic lobe proper?

Occipital lobe (correct)

Parahippocampal gyrus

Cingulate gyrus

Subcallosal gyrus

Which structure is included in the main divisions of the hippocampal formation?

Habenula

Cerebellum

Amygdala (correct)

Thalamus

How many layers does the dentate gyrus contain?

>3 layers Signup and view all the answers

Which brain region is NOT part of the Limbic System concept?

Visual cortex Signup and view all the answers

What is the relationship between the limbic system and the subcallosal gyrus?

The subcallosal gyrus is a component of the limbic lobe proper. Signup and view all the answers

Which of the following structures is NOT classified under the cerebral components of the limbic system concept?

Prefrontal cortex Signup and view all the answers

What is the relationship between the limbic lobe proper and the parahippocampal gyrus?

The parahippocampal gyrus forms part of the limbic lobe proper. Signup and view all the answers

How does the amygdala relate to the archistriatum within the limbic system concept?

The amygdala and archistriatum are distinct structures in the limbic system. Signup and view all the answers

How does the habenula relate to the thalamus dorsomedial within the limbic system concept?

The habenula functions as a regulator for the thalamus dorsomedial. Signup and view all the answers

Study Notes

Limbic System Definition

Also known as visceral brain, old brain, or rhinencephalon
Consists of limbic lobe proper and additional structures

Limbic Lobe Proper

Comprised of cerebral components:
- Subcallosal gyrus
- Cingulate gyrus
- Isthmus
- Parahippocampal gyrus
Includes hippocampal formation:
- Subiculum
- Hippocampus (Ammon's horn)
- Dentate gyrus
Also includes amygdala (archistriatum)

Limbic System Concept

Includes additional structures:
- Hypothalamus
- Thalamus (dorsomedial)
- Habenula
- Brainstem
- Prefrontal cortex

Main Divisions of Limbic Lobe

Hippocampal formation:
- Hippocampus: 3 layers, output
- Dentate gyrus: 3 layers, input molecular
  - 1 pyramidal (5) or granules (4)
- Subiculum: >3layers

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Description

This quiz covers the definition of the limbic system including its cerebral components like subcallosal gyrus and cingulate gyrus, and structures like hippocampal formation and amygdala. References include Afifi & Berman Ch. 21 and Kandel et al., Chs 48 & 49.