Practical NeuroanatomyPractical NeuroanatomyLecture 2 Lecture 2

Christine Hulette MDChristine Hulette MD

Practical NeuroanatomyPractical NeuroanatomyLecture 2 Lecture 2

Christine Hulette MDChristine Hulette MD

CORTICOSPINAL TRACTCORTICOSPINAL TRACTCORTICOBULBAR TRACTCORTICOBULBAR TRACT

EXTRAPYRAMIDAL SYSTEMEXTRAPYRAMIDAL SYSTEMVESTIBULAR SYSTEMVESTIBULAR SYSTEM

CEREBELLUMCEREBELLUMAUTONOMIC NERVOUS SYSTEMAUTONOMIC NERVOUS SYSTEM

CORTICOSPINAL TRACTCORTICOSPINAL TRACTCORTICOSPINAL TRACTCORTICOSPINAL TRACT

behavioralphys.wikispaces.com behavioralphys.wikispaces.com

upload.wikimedia.org/wikipedia/commons/5/51/A...upload.wikimedia.org/wikipedia/commons/5/51/A... upload.wikimedia.org/wikipedia/commons/5/51/A...upload.wikimedia.org/wikipedia/commons/5/51/A...

Alberts B, Bray D, Lewis J, et al. 1994Alberts B, Bray D, Lewis J, et al. 1994Alberts B, Bray D, Lewis J, et al. 1994Alberts B, Bray D, Lewis J, et al. 1994

Barr 1979Barr 1979Barr 1979Barr 1979

England and Wakely 1991England and Wakely 1991England and Wakely 1991England and Wakely 1991

CORTICOBULBAR TRACTCORTICOBULBAR TRACTCORTICOBULBAR TRACTCORTICOBULBAR TRACT

Barr 1979Barr 1979Barr 1979Barr 1979

EXTRAPYRAMIDAL MOTOR EXTRAPYRAMIDAL MOTOR SYSTEMSYSTEM

EXTRAPYRAMIDAL MOTOR EXTRAPYRAMIDAL MOTOR SYSTEMSYSTEM

Substantia nigraSubstantia nigra

Basal GangliaBasal Ganglia

Subthalamic nucleusSubthalamic nucleus

Red nucleusRed nucleus

ThalamusThalamus

England and Wakely 1991England and Wakely 1991England and Wakely 1991England and Wakely 1991

Barr 1979Barr 1979Barr 1979Barr 1979

www.ncbi.nlm.nih.gov/bookshelf/www.ncbi.nlm.nih.gov/bookshelf/ www.ncbi.nlm.nih.gov/bookshelf/www.ncbi.nlm.nih.gov/bookshelf/

VESTIBULAR SYSTEM TRACTSVESTIBULAR SYSTEM TRACTSVESTIBULAR SYSTEM TRACTSVESTIBULAR SYSTEM TRACTS

Lateral vestibulospinalLateral vestibulospinal

VestibuloocularVestibuloocular

VestibulocorticalVestibulocortical

Gertz 1991Gertz 1991Gertz 1991Gertz 1991

CEREBELLUMCEREBELLUMCEREBELLUMCEREBELLUM

Spinocerebellar tractSpinocerebellar tract

Vestibulospinal tractVestibulospinal tract

Corticopontocerebellar tractCorticopontocerebellar tract

Dentatorubrothalamic tractDentatorubrothalamic tractCoordinates muscle activity, equilibrium and tone

Tracts are uncrossed

AUTONOMIC NERVOUS AUTONOMIC NERVOUS SYSTEMSYSTEM

AUTONOMIC NERVOUS AUTONOMIC NERVOUS SYSTEMSYSTEM

SympatheticSympathetic

ParasympatheticParasympathetic

SYMPATHETIC NERVOUS SYSTEMSYMPATHETIC NERVOUS SYSTEMSYMPATHETIC NERVOUS SYSTEMSYMPATHETIC NERVOUS SYSTEM

Fight or flightFight or flight

T1-L3 lateral gray of spinal cordT1-L3 lateral gray of spinal cord

NoradrenalineNoradrenaline

Increases heart rate, respiration, dilate Increases heart rate, respiration, dilate pupilspupils

Alberts B, Bray D, Lewis J, et al.Alberts B, Bray D, Lewis J, et al. 19941994Alberts B, Bray D, Lewis J, et al.Alberts B, Bray D, Lewis J, et al. 19941994

PARASYMPATHETIC NERVOUS PARASYMPATHETIC NERVOUS SYSTEMSYSTEM

PARASYMPATHETIC NERVOUS PARASYMPATHETIC NERVOUS SYSTEMSYSTEM

Basal metabolismBasal metabolism

Brainstem, cervical and sacral spinal Brainstem, cervical and sacral spinal cordcord

Slows heart rate, respiration, constricts Slows heart rate, respiration, constricts pupilspupils

AcetylcholineAcetylcholine

Ross, Romrell and Kaye 1999Ross, Romrell and Kaye 1999Ross, Romrell and Kaye 1999Ross, Romrell and Kaye 1999