Term
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Definition
Organs and glands
Digesting, secreting,sweating. |
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Term
Somatic/Autonomic Organization
1. Efferent |
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Definition
a. Somatic efferents (GSE)(general somatic efferent fibers)– move us.
b. Autonomic efferents (GVE) (general visceral efferent fibers)– Have 4 choices. Move stuff around inside us.
1.b. Visceral efferents (GVE)– choice 3 is glands??
1.b. Visceral efferents (GVE)
Choice 4 is fat. |
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Term
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Definition
1. Cardiac muscle
2. Smooth muscle
3. Glands
4. Adipose (fats)
AND ONLY THOSE FOUR |
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Term
Afferent/sensory side
a. Somatic - GSA (general somatic afferent fibers)
b. Autonomic (visceral) afferents (GVA) (general visceral afferent fibers) |
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Definition
a. Tends to be conscious and localizable
b. TENDS to be vague and unlocalizable |
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Term
| Somatic/autonomic is not the same as |
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Definition
Voluntary/involuntary, or
Conscious/unconscious |
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Term
| some somatic function that are involuntary |
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Definition
1. Pain withdrawal reflex.
2. Knee jerk reflex.
3. Diaphragm (CN 3,4,5 keep the diaphragm alive) |
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Term
| Anterolateral spinothalamic system 1 |
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Definition
-Pain is only felt in this system.
-Pain, light touch, temperature.
-Crosses in AWC to ALSTS (Antero-lateral Spino-thalamic System).
-Crossed Track: From peripheral receptor
to cell body in DRG to synapse in dorsal horn |
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Term
| Anterolateral spinothalamic system Extra |
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Definition
1. spinothalamic tract (lateral and anterior) (thalamus): important in the localization of painful or thermal stimuli
2. spinoreticular tract (reticular formation): causes alertness and arousal in response to painful stimuli
3. spinotectal tract (tectum): orients the eyes and head towards the stimuli |
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Term
| 1. Anterolateral spinothalamic system Pathway |
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Definition
| From peripheral receptor to cell body in DRG to synapse in dorsal horn --> Crosses in AWC to ALSTS --> Continues to ascend on the same side (Sacral, Lower Lumbar, Upper Thoracic, Lower Cervical) --> Ascends through Medulla, Pons, and Midbrain --> Synapses in Thalamus --> Travels to Cerebrum and Synapses on the final destination. |
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Term
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Definition
-Vibration, 2-point tactile
-And conscious proprioception
-Wallenberg sign: Close her eyes, starts wobbling.
-They don’t synapse, and they don’t cross, an imp. Diff. from Anterolateral spinothalamic system (uncrossed, all in the same side). |
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Term
| 2a. Dorsal Column System A Pathway |
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Definition
| From receptors in skin, joints, tendons, and muscles Enter dorsal column WITHOUT synapsing (Lumbar) Ascend through cord on same side (Thoracic) |
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Term
| 2b. Dorsal Column System B Pathway |
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Definition
| Synapse in the Medulla (crosses) --> Ascends through Pons and Midbrain --> Synapses in the Thalamus (again) --> Terminates in the Cerebral Cortex. |
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Term
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Definition
| Begins in the Motor Cortex --> Descends past the Thalamus --> Through the Midbrain --> Through the Pons and Medulla --> Crosses at the *Brain/Cord Junction!* --> Descends through cord primarily as Lateral Corticospinal Tract --> Synapses on the Motor Neuron in the Ventral Horn --> Axon leaves via Ventral Root to go to the Skeletal Muscle. |
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