Spinal Reflexes Flashcards
Sympathetic origin of ANS
T1-L2,3
Parasympathetic origin of ANS
CNs: III, VII, IX, X
Spinal cord: S2,3,4
Intermediolateral cell columns in lateral horns hold…
All preganglionic sympathetic neurons
Paravertebral and prevertebral ganglia hold…
Postganglionic sympathetic neurons
Paravertebral ganglia hold…
Sympathetic chain
Visceral afferents
Found in both sympathetic and parasympathetic nerves
Cell bodies in sensory ganglia (dorsal root or CN ganglia)
Synapse in CNS (dorsal gray matter or CN nuclei)
White ramus
Preganglionic sympathetic neurons leave via here
Gray ramus
Postganglionic sympathetic neurons leave via here
Spinal facilitation and SD
Afferent drive (increase in sensory input) Spinal facilitation (motor neurons state of partial excitation) Atypical spinal reflexes Somatic dysfunction
CV visceral segmentation
T1-5
Respiratory visceral segmentation
T2-7
Stomach, liver, and gall bladder visceral segmentation
T5-9
Pancreas visceral segmentation
T5-11
Small intestines visceral segmentation
T9-11
Ovaries and testicles visceral segmentation
T9-10