3 Flashcards
Where does the spinal cord end
L1-L2
Only at T1-L2 spinal segments, cell bodies of preganglionic sympathetic neurons
Lateral horn
Sensory tracts
Dorsal column
Sensory and motor tracts
Lateral Column
Motor tracts
Anterior column
What info does the fasiculus cutaneus carryy
Info from upper extremity
What info does the fasiculus gracilis carry
Info from lower extremity and lower trunk
Info the dorsal column carries
Discrimative Touch and proprioception (conscious)
Travels to the thalamus from spine
Conscious pain and temp info
Spinothalamic
Carries unconscious pain and temp info, alerting and arousal
Reticulospinal
Primary motor output (voluntary fine motor control) Medial is about 10% and does not cross while the lateral crosses in the medulla
Corticospinal
Gross motor movements and posture control
Reticulospinal
Reflexive turning of the head
Tectospinal
What does the spinothalamic control
Conscious pain and temp
Signs of peripheral nerve distribution
Paresis or paralysis Sensory loss Abnormal sensations Muscle atrophy Reduce or absent DTR
Clinical signs for UMN
Paresis
Spasticity
Hypertonia
Hyperreflexia