6 tracts

Question 1

Posterior column - medial lemniscus: Fasciculus Gracilis

Gyrus -
Decussates -
Function -

Answer 1

Postcentral gyrus

Decussates in the Medulla (Wild)

F: Sensory impulses for touch, pressure, vibration, 2-point discrimination, graphesthesia and stereognosis from lower limbs and lower trunk

Question 2

Posterior column - medial lemniscus: Cuneate Fasciculus

Gyrus -
Decussates -
Function -

Answer 2

Gyrus - postcentral gyrus
Decussates - in the medulla
Function - sensory impulses for touch, pressure, vibration, conscious proprioception, 2-point discrimination, graphesthesia and stereognosis from upper limbs, upper trunk, neck, and posterior head.

Question 3

Lateral Corticospinal tract

Gyrus -
Decussates -
Function -

Answer 3

Gyrus - precentral gyrus
Decussates - in the pyramids of medulla
Function - conveys from precentral gyrus to skeletal muscles on opposite sides of body for precise voluntary movements of distal parts of limbs

Question 4

Anterior corticospinal tract

Gyrus -
Decussates -
Function -

Answer 4

Gyrus - precentral gyrus
Decussates - at the level of exit
Function - conveys from precentral gyrus to skeletal muscles on opposite side of body for movements of trunk and proximal parts of limbs

Question 5

Lateral spinothalamic tract

Gyrus -
Decussates -
Function -

Answer 5

Gyrus - postcentral gyrus
Decussates - at level of entry
Function - both convey sensory impulses for crude pain, cold/warmth, itch, and tickle from limbs, trunk, neck and posterior head

Question 6

Anterior spinothalamic tract

Gyrus -
Decussates -
Function -

Answer 6

Gyrus - postcentral gyrus
Decussates - at level of entry
Function - both convey sensory impulses for crude pain, cold/warmth, itch, and tickle from limbs, trunk, neck and posterior head