The Cerebrum

Question 1

Divisions of the prosencephalon (forebrain)

Answer 1

Telencephalon (cerebrum)

Diencephalon (thalamus, subthalambus, hypothalamus, and epithalamus)

Question 2

Divisions of the rhombencephalon

Answer 2

Metencephalon (pons)

Myelencephalon (medulla)

Question 3

Where is the white and grey matter located in the brain?

Answer 3

Grey matter is on the surface. (Neural soma + unmeylinated axons)
Deep cerebrum is mostly white due to myelinated axons. (can also have patches of grey matter within the white matter- includes the basal nuclei and hippocampus)

Question 4

Basal nuclei of the grey matter within the deep cerebrum

Answer 4

Contains the corpus striatum, the claustrum, and the amygdala.

Question 5

Corpus striatum

Answer 5

Within the grey matter of the deep cerebrum.
Contains:
-caudate nucleus (anterior most)
-Lentiform nuclei is posterior most (putamen + globus palladus)
(Caudate and lentiform nucleus are separated by an internal capsule. major portion is the posterior limb of the internal capsule. Part of visual pathway and major motor output passes through here)

Question 6

Posterior limb of internal capsule

Answer 6

Separates the caudate nucleus and lentiform nuclei of the corpus striatum of the deep cerebral grey matter.

Major motor output and ON passes through here.

Question 7

Claustrum

Answer 7

Within the grey matter of the deep cerebrum.

Separated from the lentiform nucleus by the external capsule. The other side is the extreme capsule.

Very thin, surrounded by white matter. Unsure of function.

Question 8

Amygdala

Answer 8

Within the anterior temporal lobe. Associated with the limbic system.

Question 9

Hippocampus

Answer 9

Part of the limbic system. Axons sent to fornix posteriorly.

Role is to transform short term memory to long term memory.

Extends from anterior potion of deep temporal lobe.

Question 10

Deep grey matter components

Answer 10

1. Basal nuclei
   - Corpus striatum
   - Claustrum
   - Amygdala
2. Hippocampus

Question 11

The cerebral fornix ??

Answer 11

Has properties of both the limbic system and deep white matter

Question 12

Components of deep white matter

Answer 12

Fornix
Internal, external and extreme capsules
Corona radiata

Question 13

Right and left brain dominance

Answer 13

Right and left cerebral hemispheres are identical at birth, but one hemisphere becomes more dominant.

90% of people are left hemisphere-dominant.

Handedness and lagnuage/speech perception are usually found on the dominant hemisphere.

Spacial perception, face recognition, and auditory understanding are usually on the non dominant hemisphere.

Question 14

Cerebral major landmarks

Answer 14

Longitudinal, calcarone(separates upper from lower occipital), lateral, parieto-occipitaq