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Spinal Cord Tracts
Ascending and Descending
13
Anatomy
Undergraduate 3
10/22/2011

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Cards

Term
Lateral spinothalamic tract
Definition
Pain, temperature
Term
Anterior spinothalamic tract
Definition
Light/crude touch, pressure
Term
Dorsal column pathways (fasciculi gracilis and cuneatus)
Definition
Two-point discrimination, vibration, muscle/joint movement, and position of body parts
Term
Anterior and posterior spinocerebellar tracts
Definition
Unconscious information from muscles, joints, and skin to cerebellum
Term
Spinotectal tract
Definition
Pain, thermal, and tactile information pass to the superior colliculus of the midbrain through the spinotectal tract for the purpose of spinovisual reflexes
Term
Spinoreticular tract
Definition
Information from muscles, joints, and skin pass through this
Term
Spino-olivary tract
Definition
An indirect pathway for afferent information to cerebellum
Term
Corticospinal tracts
Definition
Concerned with voluntary, discrete, skilled movements, especially those of the distal parts of the limbs
Term
Reticulospinal tracts
Definition
Facilitate or inhibit alpha and gamma motor neurons in spinal cord anterior gray column (facilitate or inhibit voluntary movements or reflex activity)
Term
Tectospinal tract
Definition
Concerned with reflex postural movements in response to visual stimuli. Those fibers associated with sympathetic neurons in the lateral gray column are concerned with the pupillodilation reflex in response to darkness
Term
Rubrospinal tract
Definition
Acts on both alpha and gamma motor neurons in the spinal cord anterior gray column and facilitates the activity of flexor muscles and inhibits the extensor muscles
Term
Vestibulospinal tract
Definition
Acts on motor neurons in spinal cord anterior gray column and facilitates activity of the extensor muscles and inhibits the flexors
Term
Descending autonomic fibers
Definition
Concerned with control of visceral activity
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