BS anatomical structures Flashcards
Anterolateral system
Skin to thalamus.
Anterior=crude sensations
lateral=pain, temperature
Dorsal columns
White matter in spinal cord
Ascending pathway–>fine touch and proprioception
Dorsal column nuceli
Brain stem
Fine touch
Dorsal horn of the spinal cord
Fine touch, proprioception, vibration
Encephalin
Pentapeptide involved in nociception
Internal arcuate fibers
Cross medulla. Fine touch and proprioception
Internal capsule
Inferomedial portions of cerebral hemispheres. Lots of traffic.
Lissauer’s tract
Spinal cord
Medial lemniscus
Vibratory, touch-pressure
Periaqueductal gray
Descending pain modulation
Raphé nuclei
Brain stem–> releases seratonin
Reticular activating system
Regulating wakefulness and sleep wake transition
Rexed’s Lamina
Ten layers of grey matter
Ventral posterior (VP) nucleus of the thalamus
Somoato-sensory
Ventral white commissure
Pain and temp
Anterior lobe of the cerebellum
Mediates unconscious proprioception
Ataxia
Lack of voluntary muscle coordination of muscle mov’ts
Bradykinesia
Slowness of mov’t
Caudate nucleaus
One of the there parts of the basal ganglia.
Controls voluntary mov’t
Chorea
Jerky MOv’ts
Dorsal spinocerebrall tract
conveys proprioception from muscles/joints
Flocculus
Small lobe of cerebellum–>motor control
Globus pallidus
Basial ganglia
Hyperkinetic
Increase in muscle activity
Hypokinetic
Decreased body mov’ts
Intention tremor
Braod, coarse, low frequency tremor
L-DOPA
From tyrosine. Prescursor to dopamine
Nigrostriatal tract
Dopaminergic pathway
Putamen nucleus
Regulates mov’ts
Striatum
Primary input to basal ganglia
Substantia nigra
Reward, addition, mov’t
Vermis of the cerebellm
Somatosensory input
