Hippocampus and Fornix anatomy

Question 1

Refer to the attached drawing and describe the three structures identified.

Answer 1

Locate the hippocampus, the mammillary bodies and the collections of axons that connect the two structures, the fornix.

Question 2

Refer to the attached drawing showing the anatomical regions of the fornix. Identify the three regions.

Answer 2

The Crus, Commissure and body are the three anatomical regions of the fornix (inferior > superior).

Question 3

Describe the anatomical location of the hippocampus.

Answer 3

The hippocampus is located deep within the temporal lobe.
The hippocampus forms the floor of the inferior HORN of the lateral ventricle.

Question 4

The hippocampus forms part of the floor of this structure. What is the structure called and what are the anatomical regions requiring labelling?

Answer 4

The hippocamus is located deep within the temporal lobe and forms part of the floor of the inferior HORN of the lateral ventricle.
The anatomical regions of the lateral ventricle shown here include the:
inferior horn, posterior horn and the anterior horn.

Question 5

Label the attached diagram

Answer 5

Green arrows point to regions of the left ventricle (inferior horn, posterior horn and anterior horn).
The white arrows point to (most inferior) the hippocampus which forms the floor of the inferior horn of the left ventricle and the fornix which connects the hippocampus to the mammillary bodies. The fornix has anatomical regions including the Crus, the commissure and the body.

Question 6

What structure does the fornix connect the hippocampus to?

Answer 6

The fornix connects the hippocampus to the mammillary bodies.