Neuro Block Iii - Iv

Front 1

What are the medial relations of thalamus?

Back 1

Third ventricle

Front 2

Which structure lies lateral to thalamus?

Back 2

Posterior limb of the internal capsule

Front 3

Which ventricle lies superior to the thalamus?

Back 3

Lateral ventricle

Front 4

Between what structures you find the choroid fissure?

Back 4

Chorid fissure lies between the superior surface of thalamus and fornix

Front 5

What lies anterior to the thalamus?

Back 5

Interventricular foramen

Front 6

What happens if there is a tumor at the anterior end of thalamus?

Back 6

Memory is fucked up

Front 7

What is the name of the posterior expanded part of thalamus?

Back 7

Pulvinar

Front 8

What is the shape of internal medullary lamina?

Back 8

Y shaped

Front 9

What are the three basic groups of nuclei of thalamus divided by the internal medullary lamina?

Back 9

1) Anterior group 2) Medial group 3) Lateral group

Front 10

Where is reticular nucleus situated?

Back 10

Reticular nucleus of thalamus lies between the posterior limb of the internal capsule and EML

Front 11

What are the nuclei of lateral region of thalamus?

Back 11

Ventral anterior Lateral dorsal
Ventral intermediate (ventral lateral) Lateral posterior
Ventral posterior: Ventral posterolateral Pulvinar
Ventral posteromedial

Front 12

What is Papez circuit and give its connections?

Back 12

One of the pathways of limbic system. Important in the control of memory and emotion.
Subiculum of hippocampusfornixmamillary nuclei of mamillary bodyanterior thalamic nucleuscingulate gyruscingulumparahippocampal gyrusentorhinal cortex hippocampus

Front 13

What is Wernicke Korsakoff’s syndrome?

Back 13

Wernicke-Korsakoff syndrome is caused by thiamine deficiency seen most often in alcoholics. These patients have bilateral necrosis of mamillary bodies. Patients who survive the acute stages of this syndrome present with anterograde and retrograde amnesia. They also present other neuropsychological deficits which suggest frontal lobe dysfunction

Front 14

What is the commencement and termination of fornix?

Back 14

This is a “C”shaped white matter structure of the limbic lobe
It connects the hippocampus to the mamillary body. And ends in the nucleus accumbens and septal nuclei.

Front 15

VA nucleus of thalamus is connected to what?

Back 15

Globus pallidusventral anterior nucleus of thalamusMotor cortex

Front 16

VL nucleus of thalamus is connected to what?

Back 16

Also called intermediate nucleus. Dentate nucleus of cerebellumventral intermediate nucleusmotor cortex

Front 17

VPL nucleus receives which tracts and where does it project?

Back 17

Connections: Medial lemniscus+spinal lemniscusventral posterolateral nucleus of thalamussensory cortex

Front 18

VPM nucleus receives sensations from which part of the body?

Back 18

VPM nucleus receives sensations from which part of the body?
all conscious sensations from spinal cord come here
Connections: Trigeminal lemniscus (pain and temperature from the face) and tasteventral postero medial nucleus of thalamussensory cortex

Front 19

Name all the nuclei of ventral tier of lateral group nuclei of thalamus?

Back 19

VA, VPM, VPL, VL

Front 20

What transmitter is released by the reticular cells?

Back 20

Gaba

Front 21

Where are reticular cells located?

Back 21

Thalamus

Front 22

What types of channels are responsible for the burst potential?

Back 22

Special voltage gated sodium channels (T-Type)

Front 23

Which channels are implicated in the absence seizures?

Back 23

(T-Type)

Front 24

What is the very important sign of paramedian thalamic infarction?

Back 24

Coma and then severe memory dysfunction