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37 Cards in this Set
- Front
- Back
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Arm abduction
Suprascapular n. (supraspinatus) Axillary n. (deltoid) |
C5, C6
C5, C6 |
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Elbow flexion
Musculocutaneous n. (brachialis, biceps) Radial n. (brachioradialis) |
C5, C6
C5, C6 |
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Elbow extension
Radial n. (triceps) |
C6, C7, C8
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Wrist flexion
Median n., ulnar n. |
C6, C7, C8
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Wrist extension
Radial n. |
C5-C8
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Finger movements
Median n., radial n, ulnar n |
C7, C8, T1
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Thumb movements
Median n., radial n, ulnar n |
C7, C8, T1
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Hip flexion
Lumbar spinal nerves, femoral n. |
L1, L2, L3
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Hip extension
Inferior gluteal n. (gluteus maximus) |
L5, S1, S2
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Knee flexion
Sciatic n. (hamstrings) |
L5, S1, S2
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Knee extension
Femoral (quads) |
L2, L3, L4
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Ankle dorsiflexion
Sciatic-->fibular n. (tibialis anterior) |
L4, L5
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Ankle plantarflexion
Sciatic-->tibial (gastrocnemius) |
S1, S2
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Upper arm (lateral)
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C5
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Thumb, lat. forearm
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C6
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Middle finger
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C7
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Little Finger
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C8
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Nipple
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T4
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Umbilicus
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T10
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Big toe
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L5
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Heel
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S1
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Back of the thigh
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S2
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Substantia gelatinosa
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Associated with the dorsolateral fasciculus. Transmitting pain & temp. info via spinothalamic tract
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Body of dorsal horn (principal sensory nucleus)
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Projection & interneurons
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Nucleus dorsalis
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Ventro-medial on dorsal horn. ~C8/T1-->L2/L3.
Projection neurons relaying proprioceptive info along dorsal spinocerebellar tract. |
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Lateral horn
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T1-L2
Primarily preganglionic sympathetic cell bodies. Some parasympathetic preganglionic cell bodies ~S2-S4 |
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Ventral horn contains what 4 neurons?
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1. Alpha motor (extrafusal fibers)
2. gamma motor (intrafusal fibers) 3. Interneurons 4. Projection neurons (give origin to ascending tracts) |
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Input to the ventral horn comes form?
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Primary afferents of dorsal root.
Descending tracts (LCST) Interneurons (relay info from the first two) |
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Medial motor cell column
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All spinal levels.
Innervates axial muscles |
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Lateral motor cell column
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C & L levels.
Innervates limbs |
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Phrenic nucleus
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Medial ventral horn, C3-C5
Reflects origin of diaphragm from cervical myotomes |
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Accessory nucleus
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Lateral ventral horn, C1-C5/6.
Run through foramen magnum to give rise to CN XI |
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Lamina II and IX refer to?
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Substantia gelatinosa & the medial/lateral motor neuron columns (incl. phrenic & accessory nuclei)
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First order neurons have their cell bodies and synapse where?
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Peripheral sensory ganglion
Spinal cord/brain stem |
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Second order neurons have their cell bodies and synapse where?
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Spinal cord/brain stem
thalamus |
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Third order neurons have their cell bodies and synapse where?
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Thalamus
Cerebral cortex |
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3 main ascending tracts and their subdivisions?
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1. Anterolateral
a. spinothalamic b. spinoreticular c. spinomesencephalic 2. Dorsal Column-Medial Lemniscal system 3. Spinocerebellar a. Dorsal spinocerebellar b. Cuneocerebellar c. Ventral spinocerebellar |
