Chapter 6: Problem 9

What is the main afferent pathway to the CA1 pyramidal cells and from where does this pathway originate?

Short Answer

Expert verified

Answer: The main afferent pathway to the CA1 pyramidal cells in the hippocampus is Schaffer collaterals, which originate from the CA3 pyramidal cells.

Step by step solution

Understand Afferent Pathways

Afferent pathways are the connections through which neurons receive input from other neurons or external stimuli. These connections usually involve synapses or direct connections via axonal projections. We need to find the main afferent pathway for the CA1 pyramidal cells in the hippocampus.

Identify the Structure of the Hippocampus

The hippocampus is a critical structure involved in memory and learning processes and consists of different regions, including the dentate gyrus and the Cornu Ammonis regions (CA1, CA2, and CA3). The CA1 region contains pyramidal cells, which play an essential role in the neuronal circuitry of the hippocampus.

Identify the Origination Point of the Afferent Pathway

The main afferent pathway to CA1 pyramidal cells in the hippocampus is Schaffer collaterals. Schaffer collaterals are the axonal projections of CA3 pyramidal cells.

Determine the Main Afferent Pathway

The main afferent pathway to the CA1 pyramidal cells in the hippocampus is Schaffer collaterals, originating from the CA3 pyramidal cells. This pathway is essential for information transfer within the hippocampus and plays a major role in memory processing and consolidation.

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What is the main afferent pathway to the CA1 pyramidal cells and from where does this pathway originate?

Short Answer

Step by step solution

Understand Afferent Pathways

Identify the Structure of the Hippocampus

Identify the Origination Point of the Afferent Pathway

Determine the Main Afferent Pathway

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