Fieke string tracts poster update

Use this nail board
to trace the spinal reflex arc
as well as the following four
spinal tracts:
Prim
ary
sens motor o
ory c
r
ortex
Motor tracts
- Corticospinal tract
(aka pyramidal tract)
Sensory tracts
- Dorsal column tract
- Spinothalamic tract
- Spinocerebellar tract
Cerebral cortex
Thalamus
Internal capsule
Large-headed nails repesent
neuronal cell bodies.
Small-headed
nails can be used as way points or
can represent the termination of
an axon or dendrite.
Spinothalamic tract (in
spinal lemniscus)
Please note that the positions of
nuclei, tracts, and specific areas
within them is a rough guide only.
Medial lemniscus
Corticospinal tract
Cerebral peduncle
Mid-brain
-at inferior colliculus
level
Superior cerebellar
Peduncle
Middle cerebellar
peduncle
Cerebellum
Inferior cerebellar
peduncle
Spinothalamic tract
Medial lemniscus
Corticospinal tract
Middle cerebellar peduncle
Pons
Inferior cerebeller peduncle
Accessory cuneate nucleus
Spinothalamic tract (in
spinal lemniscus)
Upper (open)
medulla
Medial lemniscus
Corticospinal tract
Pyramid
Gracile fasciculus
Cuneate fasciculus
Gracile nucleus
Cuneate nucleus
Dorsal Root
Ganglion
Lower (closed)
medulla
Dorsal spinocerebellar tract
Spinothalamic tract
Pyramidal decussation
Gracile fasciculus
Cuneate fasciculus
Dorsal spinocerebellar tract
Lateral cortiospinal tract
Spinothalamic tract
Cervical
enlargement
spinal cord
Ventral horn
Anterior corticospinal tract
Substenia gelatinosa
Receptors
Muscle spindle
or golgi tendon
organ
(proprioception)
Gracile fasciculus
Effectors
Dorsal spinocerebellar tract
Neuromuscular
junction
Lateral corticospinal tract
Free nerve
endings,
(pain, temperature)
Clarke’s column
Thoracic
spinal cord
Ventral horn
Spinothalamic tract
Meissner’s and
Pacinian
corpuscles
(skin sensation)
Anterior corticospinal tract
Dorsal Root
Ganglion
Gracile fasciculus
(dorsal column tracts)
Substantia gelatinosa
Lateral corticospinal tract
Ventral horn
Spinothalamic tract
Anterior corticospinal tract
Lumbar
enlargement
of spinal cord