The nurse is checking reflexes on a 7-month-old infant. When the infant is suspended in a horizontal prone position, the head is raised and the legs and spine are extended. Which reflex is this?
a. Landau
b. Parachute
c. Body righting
d. Labyrinth righting
ANS: A
When the infant is suspended in a horizontal prone position, the head is raised and the legs and spine are extended; this describes the Landau reflex. It appears at 6 to 8 months and persists until 12 to 24 months. The parachute reflex occurs when the infant is suspended in a horizontal prone position and suddenly thrust downward; the infant extends the hands and fingers forward as if to protect against falling. This appears at age 7 to 9 months and lasts indefinitely. Body righting occurs when turning the hips and shoulders to one side causes all other body parts to follow. It appears at 6 months of age and persists until 24 to 36 months. The labyrinth-righting reflex appears at 2 months and is strongest at 10 months. This reflex involves holding infants in the prone or supine position. They are able to raise their heads.
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