N5 The Forebrain: Thalamus, Bg, & Cortex

Front 1

Name the structures in the DIENCEPHALON? What ventricle does it surround?

Back 1

Thalamus & Hypothalamus
III ventricle

Front 2

Name the structures in the TELENCEPHALON? What ventricles?

Back 2

Cerebral cortex, Basal ganglia, Internal capsule, & amygdala(end of course)
Lateral ventricles

Front 3

Name the parts of the Lateral Ventricles.
What structure separates them?
What part or the ventricular system are they confluent with?

Back 3

Frontal horn (anterior)
Occipital horn (posterior)
Temporal (inferior)

Septum pellucidum
Interventricular foramen

Front 4

Divisions of the thalamus

-Which thalamic nucleus connects to the frontal cortex?
-the parietal, temporal & occipital cortex?

Back 4

-Dorsomedial nucleus
-Pulvinar nucleus

Front 5

Name the 2 parts of the Ventral Posterior Nucleus

Back 5

Ventral posterior medial = VPM
Ventral posterior lateral = VPL

Front 6

What type of signaling does the VPM receive? The VPL? From what part of the body?

Back 6

VPM = somatosensory from HEAD
VPL = somatosensory from BODY

Front 7

What connects with the Medial geniculate nucleus?
The Lateral geniculate nucleus?

Back 7

MGN: Autitory cortex (Think Medial = Music)
LGN: Visual cortex (Think Lateral = Light)

Front 8

What type of sensory is the Intralaminar nuclei involved in?

Back 8

Arousal or Pain

Front 9

Describe the axon pathway of the THALAMUS.
What are the axonal projections called?
What structure do ALL the axons pass into?

Back 9

It is the RELAY CENTER going TO the CORTEX.
-Each thalamic nucleus sends axons TO or receives axons FROM the cerebral cortex.
-Thalamocortical OR corticothalamic radiations (they are RECIPROCAL)
-Axons pass into the INTERNAL CAPSULE

Front 10

What nuclei are included in the RELAY NUCLEI?

Back 10

Ventral nuclei
Anterior nucleus
Medial & Lateral geniculate nuclei

Front 11

What connects with the Medial geniculate nucleus?
The Lateral geniculate nucleus?

Back 11

MGN: Autitory cortex (Think Medial = Music)
LGN: Visual cortex (Think Lateral = Light)

Front 12

What type of sensory is the Intralaminar nuclei involved in?

Back 12

Arousal or Pain

Front 13

What types of connections/neurons are in the WHITE MATTER of the cerebral cortex?

Back 13

-Commissural neurons: Rt w/ Lt post central gyrus
-Association neurons: Same side front to back (ex. frontal to occipital lobe)
-Projection neurons: Go DOWN to cord, BG, & brain stem

Front 14

What is contained w/in the Gray Matter of the cortex?
How many layers?

Back 14

NEOCORTEX = 6 layers (Layers) (Brodmann #'s)
-Sensory cortex
-Motor cortex
-Association cortex

Front 15

Input or Output & where does the information Go to/Come from in the: 4th lamina?
5th lamina?

Back 15

4th: Input from Thalamus
5th: Output motor to BG, brainstem, spinal cord