Anatomy-Internal Topography of the Brain

Question 1

Identify the structures indicated in the image below.

Answer 1

SP: septum pellucidum, AC: anterior commissure, LT: lamina terminalis

Question 2

Identify the structures indicated in the image below.

Answer 2

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Question 3

What structure is indicated in the image below?

Answer 3

Putamen. This is the most lateral portion of the lentiform nucleus. It merges with the head of the caudate rostrally.

Question 4

What structures are indicated in the image below?

Answer 4

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Question 5

What structures are indicated in the image below?

Answer 5

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Question 6

What structures are indicated in the image below?

Answer 6

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Question 7

Identify the structures indicated in the image below.

Answer 7

These are the longitudinal divisions of the brainstem.

Question 8

Identify the structures indicated in the image below.

Answer 8

IVF, III Ventricle, Cerebral Aqueduct, IV Ventricle and Central canal

Question 9

What structures is the choroid plexus associated with?

Answer 9

Body, trigone & inferior horn of lateral ventricle, IVF, roof of III ventricle, caudal roof of IV ventricle and Foramina of Luschka

Question 10

How does CSF circulate around the brain?

Answer 10

Made by the choroid plexus -> lateral ventricle -> IVF -> III Ventricle -> Cerebral Aqueduct -> IV Ventricle -> Foramina of Luschka or Foramen of Magendie -> Subarachnoid space -> superior sagittal sinus (venous system)

Question 11

What structure is indicated in the image below?

Answer 11

The caudate head and body

Question 12

What structures are indicated in the image below?

Answer 12

The medial and lateral pallidal segments of the globes pallidus

Question 13

What structure forms the medial wall of the lateral ventricle?

Answer 13

Septum pellucidum.

Question 14

What are the different divisions of the fornix?

Answer 14

Arises from the hippocampus, the body (arches over the thalamus) and the column (descending portion anterior to the thalamus)

Question 15

What structure lies rostral to the column of the fornix and interconnects the two temporal lobes?

Answer 15

Anterior commissure

Question 16

What structure represents the diencephalon/telencephalon junction?

Answer 16

Lamina terminalis. It extends from the anterior commissure to the optic chiasm at the base of the diencephalon.

Question 17

What structure is sometimes seen in brains that interconnects the two thalami across the third ventricle?

Answer 17

Massa intermedia.

Question 18

What is the main function of the thalamus?

Answer 18

It is the main relay center where almost all signals pass through when going to and from the cerebral cortex.

Question 19

What is the main function of the hypothalamus?

Answer 19

Regulation and coordination of autonomic, behavioral and endocrine functions.

Question 20

What landmark might you look for when trying to locate the posterior commissure?

Answer 20

Pineal body. The posterior commissure is a small white band located rostral and ventral to the pineal body.

Question 21

What separates the cerebellum from the pons and medulla?

Answer 21

4th ventricle

Question 22

How is the cerebellum connected to the brainstem?

Answer 22

3 Cerebellar peduncles

Question 23

What are the different regions of the lateral ventricle?

Answer 23

Anterior horn, body, trigone, posterior hour and inferior horn

Question 24

What openings exist in the 4th ventricle?

Answer 24

2 lateral wall openings (foramina of Luschka) and 1 medial wall opening (foramen of Magendie)

Question 25

What are the different regions of the caudate nucleus?

Answer 25

Head, body and tail

Question 26

What structure forms the lateral wall of the of the lateral ventricle?

Answer 26

The head and body of the caudate nucleus

Question 27

What structure forms the roof of the inferior horn of the lateral ventricle?

Answer 27

The tail of the caudate nucleus

Question 28

What structure is located in the floor of the inferior horn of the lateral ventricle?

Answer 28

The hippocampus and start of the fornix

Question 29

What three major structures make up most of the core of the brain deep to the insula?

Answer 29

Lentiform nucleus, thalamus and internal capsule.

Question 30

What are the subdivisions of the lentiform nucleus?

Answer 30

Laterally you have the putamen and medially you have the globus pallidus (with medial and lateral pallidal segments)

Question 31

What two structures are located in the temporal lobe and associated with the inferior horn of the lateral ventricle?

Answer 31

Amygdala (deep to uncut and rostral to tip of inferior horn of lateral ventricle) and hippocampus (floor of inferior horn of the lateral ventricle).

Question 32

Identify the different structures seen in the image below:

Answer 32

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Question 33

Identify the different structures seen in the image below:

Answer 33

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Question 34

Identify the different structures seen in the image below:

Answer 34

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Question 35

Identify the different structures seen in the image below:

Answer 35

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Question 36

Identify the different structures seen in the image below:

Answer 36

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Question 37

Identify the different structures seen in the image below:

Answer 37

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Question 38

Identify the different structures seen in the image below:

Answer 38

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Question 39

Identify the different structures seen in the image below:

Answer 39

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Question 40

Identify the different structures seen in the image below:

Answer 40

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Question 41

Identify the different structures seen in the image below:

Answer 41

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Question 42

Identify the different structures indicated in the image below:

Answer 42

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Question 43

Identify the different structures indicated in the image below:

Answer 43

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Question 44

Identify the structures indicated in the image below:

Answer 44

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