Dorsal ColumnMedial Lemniscal System Anatomy Review Click name

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex DM Mc. Keough © 2008

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex

Dorsal Column-Medial Lemniscal System Anatomy Review Click name to highlight structure Receptors: Mechanoreceptors First-order neuron Cell body: Dorsal root ganglion Distal axon: Large diameter, myelinated (A) fiber Proximal axon Reflex connections: Monosynaptic reflex Alpha lower motor neuron Projection: Dorsal columns Fasciculus gracilis Fasciculus cuneatus Termination: Dorsal column nuclei Second-order neuron Cell body: Dorsal column nuclei Decussation: Medulla Projection: Medial lemniscus Termination: Ventral posterolateral nucleus (VP of thalamus Third-order neuron Cell body: VPL Projection: Internal capsule Termination: Primary somatosensory cortex