extrapyramidal tract

a motor portion of the central nervous system that includes the basal ganglia and some closely related structures (e.g., the subthalamic nucleus) and descending pathways to the midbrain. It regulates muscle tone and body posture and coordinates opposing sets of skeletal muscles and movement of their associated skeletal parts. Also called extrapyramidal motor system; extrapyramidal system.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

January 19th 2025

holism

n. any approach or theory holding that a system or organism is a coherent, unified whole that cannot be fully explained in terms of individual parts or characteristics. The system or organism may have properties as a complete entity or phenomenon in addition to those of its parts. Thus, an analysis or understanding of the parts does not provide an understanding of the whole. —holistic adj.