(finalprep) 4 SPINAL CORD TRACTS

Question 1

corticospinal tracts

Answer 1

EFFERENT TRACTS

• provides CONSCIOUS CONTROL of SKELETAL MUSCLE CONTRACTION
• connects UMN of opposite hemisphere with LMN of PNS (ventral horns of spinal cord)

Question 2

posterior column tracts

Answer 2

AFFERENT TRACTS

• conducts STEREOGNOSIS, CONSCIOUS PROPRIOCEPTION, VIBRATION, DISCRIMINATIVE/FINE TOUCH
• below head to OPPOSITE hemisphere via THALAMI

Question 3

spinocerebella tracts

Answer 3

AFFERENT TRACTS

• conducts SUBSCONSCIOUS PROPRIOCEPTION, VIBRATION
• below head to CORRESPONDING cerebellar hemisphere for SUBCONSCIOUS USE

Question 4

spinothalamic tracts

Answer 4

AFFERENT TRACTS

• provides PAIN, TEMPerature, CRUDE/LIGHT TOUCH sensations
• below head to CONTRA-LATERAL THALAMUS, then to somatosensory areas of OPPOSITE SITE HEMISPHERES