21. Basal Ganglia p 402 More proper term: basal nuclei A collection of several nuclei Gray matter deep to the cerebral cortex, below floor of lateral ventricles. Function: modulate motor output from the cerebral cortex. Subconscious control of skeletal muscle tone and coordination of learned movement patterns. Parkinson's disease is caused by the loss of at least 80% of the dopaminergic neurons in basal nuclei and substantia nigra (resting tremor)
Thalamus = 80% of diencephalon. Gateway (relay station) to the cerebral cortex not just for sensory input but for all info. Processing and editing also takes place. About 12 nuclei Hypothalamus also about 12 nuclei. Main visceral control center of the body
In 90-95% of people left side has more control over language, math and logic. Right side is more involved withy visual-spatial skills, intuition, emotion, artistic and musical skill.
In 90-95% of people left side has more control over language, math and logic. Right side is more involved withy visual-spatial skills, intuition, emotion, artistic and musical skill.
Substantia nigra is in mesencephalon
sagittal image showing brain and normal pituitary with bright spot in posterior, neurohypophysis, which is secretory granules which are made in base of brain and transported down infundibulum or pituitary stalk.
contrast enhances pituitary because of no blood brain barrier, the adenoma has less blood supply and is therefore less enhanced. The Pit. is an endocrine organ so it is highly vascular to release various endocrine hormones into the circulation quickly.
![Ch 13: Central Nervous System Part 1: The Brain p 378 ,[object Object],[object Object]](https://image.slidesharecdn.com/chapter13cnspart1marieb-101020231333-phpapp02/85/chapter13-cns-part1marieb-1-320.jpg)
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