Physiologic

Question 1

Head Righting

Answer 1

Visual and vestibular

Align face/head vertical, mouth horizontal

Prone - 2 mos
Supine - 3-4 mos

Question 2

Head and body righting

Answer 2

Tactile, vestibular proprioceptive

Align body parts in anatomic position relative to each other and gravity

4-6 mos

Question 3

Protective extension or parachute reactions

Answer 3

Displacement of COG outside supporting bae in sitting, standing

Extension/abduction of lateral extremity toward displacement to prevent falling

Sitting:
ant - 5-7 mos
lat - 6-8 mos
post - 7-8 mos
Standing - 12-14 mos

Question 4

Equilibrium or tilting reactions

Answer 4

Displacement of COG

Adjustment of tone and posture of trunk to maintain balance

Sitting - 6-8 mos
Standing - 12-14 mos