Spinal Cord & tracts

meninges and its three layers

dura matter does not attach to bone, it is surrounded externally by layer of cushioning fat called epidural space

• white matter - transport to signal
• gray matter - integration site

known as sensory & motor pathways consisting of multineuron pathways connecting CNS to PNS

has four main ascending tracts conducting afferent signals with two sending it to cerebral cortex (dorsal column & spinothalamic pathway) and two to cerebellum (posterior & anterior spinocerebellar pathways)

carries signal of fine touch, pressure, & proprioception

carries signals of pain, temperature, deep pressure, & course touch

carry subsconcious proprioception

divided into pyramidal (corticospinal) tracts or all others with all these type of tracts cross over at some point

control skill motor (precise movement) from brain