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N8 Neurology
Basic Anatomy Review
Toronto Notes 2019
Sympathetic
Pupil
Parasympathetic
L1
and enzyme secretion
enzyme secretion
Skin
Piloerector Vasoconstriction
Constriction
Figure 8. Sympathetic and parasympathetic pathway
C2 C3
C2 C3 C4
Superior cervical ganglion
Lungs and trachea
Dilation
Modulate secretion
Bronchodilation
Constriction
Vasodilation, acceleration
Glycogen utilization
Liver
Sweat
Inhibit motility
Stimulate motility and
Lacrimal and salivary glands
III
VII
IX
X
Adrenal medulla
Release epinephrine
Ejaculation
C4 T1 C5 C6 T2 T3 T4 T5 T6 T7 T8 T9
T10 T11 T12
S4 S3 S2 S1
Erection
C5C6
glands stimulated
Inhibit constriction
Bladder
Reproductive system
Pterygopalatine g. (lacrimation) Submaxillary g. (salivation)
Otic g. (parotid secretion)
T1
Secretion
Vasoconstriction, deceleration
Bile secretion
Coronary arteries and heart rate
GI tract
S2
Myotomes
C5 – Shoulder abduction/elbow flexion C6 C6 – Wrist extensors
C7 – Elbow extension
C8 – Finger flexion C7
T1 – Finger abduction
T2-9 – Intercostal (abdominal reflexes) C8 T9-10 – Upper abdominals
T11-12 – Lower abdominals
L2 – Hip flexion
L3 – Hip adduction
L4 – Knee extension and ankle dorsiflexion
L5 – Ankle dorsiflexion and big toe extension
S1 – Plantarflexion
L1 L2 L3
L4 L5
C7 C8
L1 L2 L3 L4 L5
L1 L2 L3 L4 L5
Figure 9. Dermatome map
© Glen Oomen 2002 © Jenna Rebelo 2010