Quiz #9

Question 1

thalamus

Answer 1

• Greek: inner chamber or bedroom
• Location: top of midbrain
• has 2 parts each the size of a walnut
• involved in motor function indirectly through directing some extrapyramidal fibers to the basal ganglia

Question 2

hypothalamus

Answer 2

• means “under chamber”
• size of an almond
• located: just under the anterior ventral surface of the thalamus
• connects the nervous system to the endocrine system via the pituitary gland
• controls aspects of metabolism, body temp, food intake, Circadian rhythms, emotion, and secondary sex characteristics
• maintains the body’s status quo

Question 3

Epithalamus

Answer 3

• located: superior and posterior to the thalamus

- consists of the pineal gland, habenula, stria medullaris

Question 4

Subthalamus

Answer 4

• Located: below the thalamus
• contains a set of specialized cells called the sub thalamic nucleus
• more in common with the basal ganglia than the thalamus
• plays a role in selection of actions and impulse control
• Damage to the sub thalamus: results in hemiballismus, OCD, general impulsivity

Question 5

Dejerine-Roussy syndrome

Answer 5

• Also known as Thalamic pain syndrome

- involves burning or tingling sensations and possibly hypersensitivity to things that would not normally be painful

Question 6

Pituitary gland

Answer 6

• part of the hypothalamus

- the way by which the hypothalamus connects the nervous system to the endocrine system

Question 7

Thalamic aphasia

Answer 7

• a type of aphasia noted to have 3 main characteristics
  1) fluent verbal output with semantic paraphasia that often results in jargon
  2) auditory comprehension that was less severe than one would expect for the severity of verbal output
  3) minimally impaired or intact repetition

Question 8

Thalamic Nuclei

Answer 8

1) Medial –> Dorsomedial (DM)
2) Lateral-dorsal –> Lateral Dorsal (LD), Lateral posterior (LP), Pulvinar (P)
3) Lateral Ventral –> Ventral anterior (VA), Ventral Lateral (VL), Ventral Posterior Lateral (VPL), Ventral Posterior Medial (VPM), Medial Geniculate Body (MGB), Lateral Geniculate Body (LGB)
4) Anterior –> Anterior Nucleus (AN)
5) Intralaminar –> Centromedian Parafascicular
6) Reticular –> Reticular
7) Midline –> Midline

Question 9

Fluent Aphasic Conditions

Answer 9

1) Fluency –> Wernicke’s(+), Transcortical Sensory(+), Conduction(+), Thalamic(+), Anomic(+)
2) Auditory comprehension –> Wernicke’s (-), Transcortical Sensory (-), conduction (+), Thalamic (=), Anomic (+)
3) Repetition –> Wernicke’s (-), Transcortical Sensory (+), Conduction (-), Thalamic (=), Anomic (+)