Neuro L.10 Main Concepts Flashcards
(20 cards)
What is the Conus medullaris?
Where the spinal cord ends - L1/L2
What is the Filum Terminale?
Connective tissue (NOT NEURAL) - connects end of spinal cord to coccyx
What do Denticulate ligaments do?
Anchors spinal cord to dura mater
What is the Dorsolateral sulcus associated with?
Posterior spinal artery
What is the Anterolateral sulcus?
Location of ventral root exit
What does the Ventral median fissure contain?
Anterior spinal artery
What is the somatotopic organization of white matter?
Medial to lateral
-cervical
-thoracic
-lumbar
-sacral
What are the regions of the spinal cord?
Cervical, thoracic, lumbar, sacral
Where is located in the lateral horn of the spinal cord?
T1-L2: location of sympathetic cell bodies
What are the urinary continence centers?
Frontal cortex, Pons, Sacral cord
What characterizes Anterior Cord syndrome?
Flexion MOI, DCML spared, B corticospinal tract impaired, B spinothalamic tract impaired
What are the characteristics of Central Cord syndrome?
Small: Spinothalamic impaired
Large: spinothalamic and UE corticospinal tract impaired
Motor loss > sensory loss
UL > LL
Distal > Proximal
E: MOI: extension
What occurs in Hemicord syndrome?
Ipsilateral DCML and corticospinal tract impaired; Contralateral spinothalamic tract impaired
What is Cauda equina syndrome?
Peripheral nerve: LMN impairments - hypotonia, hyporeflexia
What is Tethered Cord syndrome?
Stretched cord → UMN signs: hypertonic, hyper-reflexive
What is affected in Posterior Cord syndrome?
B DCML impaired
What is the location of flexors in the gray matter?
Flexors are located in the posterior ventral horn.
What is the location of extensors in the gray matter?
Extensors are located in the anterior ventral horn.
Where are proximal muscles located in the gray matter?
Proximal muscles are located in the medial ventral horn.
Where are distal muscles located in the gray matter?
Distal muscles are located in the lateral ventral horn.
