Nervous Part 2

Question 1

Where is the location of the decussatiotn of the corticospinal tract

Answer 1

Lower medulla

Question 2

Final common pathway for the control of skeletal muscle activity

Answer 2

Anterior gray horn cell of the SC and Motor nuclei of the CN

“Lower nmotor neurons”

Question 3

Which thalamic nuclei is concerned with emotional tone and memory?

Answer 3

Anterior/dorsomedial

Question 4

Which thalamic nuclei is concerned with sensory

Answer 4

VPL (from spinothalamic and dorsal column to primary somatosensory)
VPM (from trigeminal to primary somtosensory)

Question 5

Which thalamic nuclei is concerned with motor

Answer 5

Ventral anterior

ventral lateral

Question 6

Which thalamic nuclei is concerned with vision

Answer 6

Lateral geniculate body (LGB)

“Look”

Question 7

Which thalamic nuclei is concerned with HEARING

Answer 7

Middle geniculate body (MGB)

“Music”

Question 8

Dejerine-Roussy syndrome is a rare neurological condition in which a stroke to the part of brain resultst in excessive pain in response to reduced sensation. Which part of the brain is involved?

Answer 8

Thalamus
“Central Pain Syndrome”
-very sad syndrome
-pure sensory low without weakness of contralaeral side
—hemilateral sensory loss of all modalities
—hemilateral pain
—Hypersensitivity - if you touch their affected side, they will shout!

Question 9

Heel to shin test is done to check for the integrity of what lobe of cerebellum?

Answer 9

Anterior

Question 10

Anterior lobe of cerebellum

Answer 10

Paleocerebellum or spinocerebellum
Function:
-to maintain coordination of limb movements while the movements are being executed
-regulatioan of muscle tone

Question 11

Posterior lobe of cerebellum

Answer 11

Neocerebellum or cerebrocerebellum

Function: coordination of voluntary movements

Question 12

Flocculonodular lobe of cerebellu

Answer 12

Archicerebellum or vestibulocerebellum

Function: responsible for coordination of the paraxial muscles associated with EQUILIBRIUM

Question 13

Posterior lobe syndrome (cerebellum)

Answer 13

Ataxia
Dysmetria (overshooting)
Dysdiadochokinesia (alternating movements)
Usually vascular/stroke

Question 14

Anterior lobe syndrome of cerebellum

Answer 14

Marked gait instability
Loss of coordination primarily in the lower limbs
Heel-to-shin is difficult
May be due to toxic, metabolic, chornic alcoholis

Question 15

Flocculonodular lobe syndrome

Answer 15

Truncal ataxia

Neoplastic/medulloblastoma (child)

Question 16

Very sad syndrome

Answer 16

Dejerine-Roussy syndrome

Central Pain Syndrome