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Major Spinal Tracts
Ascending (sensory) & Descending (motor)
13
Biology
Undergraduate 3
11/21/2011

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Cards

Term
Gracile fasciculus
Definition
Sensations of limb & trunk position and movement, deep touch, visceral pain, and vibration, below T6

Column: Posterior
Decussation: In medulla
Term
Cuneate fasciculus
Definition
Sensations of limb & trunk position and movement, deep touch, visceral pain, and vibration, above T6

Column: Posterior
Decussation: In medulla
Term
Spinothalamic
Definition
Sensations of light touch, tickle, itch, temperature, pain, and pressure

Column: Lateral + Anterior
Decussation: In spinal cord
Term
Spinoreticular
Definition
Sensation of pain from tissue injury

Column: Lateral + Anterior
Decussation: In spinal cord
Term
Posterior spinocerebellar
Definition
Feedback from muscles (proprioception)

Column: Lateral
Decussation: None
Term
Anterior spinocerebellar
Definition
Feedback from muscles (proprioception)

Column: Lateral
Decussation: In spinal cord
Term
Lateral corticospinal
Definition
Fine control of limbs

Column: Lateral
Decussation: In medulla
Term
Anterior corticospinal
Definition
Fine control of limbs

Column: Anterior
Decussation: In spinal cord
Term
Tectospinal
Definition
Reflexive head turning in response to visual and auditory stimuli

Column: Anterior
Decussation: In midbrain
Term
Lateral reticulospinal
Definition
Balance & posture; regulation of awareness of pain

Column: Lateral
Decussation: None
Term
Medial reticulospinal
Definition
Balance & posture; regulation of awareness of pain

Column: Anterior
Decussation: None
Term
Lateral vestibulospinal
Definition
Balance & posture

Column: Anterior
Decussation: None
Term
Medial vestibulospinal
Definition
Control of head position

Column: Anterior
Decussation: In medulla (some fibers)
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