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what are the three tracts of the corticopspinal pathway
1 cortcobular tracts
2 lateral corticospinal tracts
3 anterior corticospinal tracts
corticospinal tract consious or uncounsious
consious (pyramidal)
where do all three of the corticospinal tracts start
primary motor cortex
corticobulbar tract
type of info
ends where
voluntary muscles of face, head, neck (speech and chewing)
ends: motor nuclei of cranial nerve
lateral corticospinal tracts stimulus type to where
precise skilled movements in the distal limbs. (skeletal muscles of distal extremities)
Anterior corticospinal tract stimulus type and to where
axial control in proximal limbs and trunk. posture and powerful movemnts(neck shoulders, trunk)
are medial and lateral pathway, extrapyramiudal or pyramidal
extrapyramidal (subconsious)
remember these are efferent
medial pathway (extrapyramidal) carries info to where
muscle tone and gross movents for neck, trunk and proximal limbs
lateral pathway (extrapyramidal) carries info to where
muscle tone in distal limbs and precise movmnets
do all corticospinal pathways decussate or not
all decussate
medial and lateral tract overall do what (3)
eye movement, balance, muscle tone (we are not aware of these)
autonomic nervous system contains (3)
sympathetic chain ganglia
collateral ganglia
adrenal medulla
sympathetic chain ganglia (what is the stimulus and where is it going)
effectors in the body wall, thoracic cavity, head, neck, limbs
(fight/flight)
collateral ganglia contains what 3 sub tracts
celiac ganglia
superior mesentric ganglion
inferior mesenric ganglion
celiac ganglion goes where and what is the stimulus
innvervates stomach, duodenum, liver, gall bladder, pancrease, spleen
(fight/flight)
Superior mesentric ganglion (stimulus and to where)
innervtaes small intestine and initial segments of large
Inferior mesenteric ganglion innervates where and what type of stimulus
innervates terminal part of large intestine, kidney, urinary, sex organs
Adrenal medulla type of stimulus and to where
secreates nts directly into bloodstream (epi and norepi)