Newborn Reflexes Flashcards
rooting reflex
brush cheek and infant will turn head in that direction, helps them find food
rooting diminishes when?
about 6 mos
blink reflex
protects eye, never goes away
sucking reflex
touch lips, baby makes a sucking motion. Helps them find food
sucking reflex diminishes when?
at 6 months
swallowing reflex
food that reaches posterior portion of tongue is automatically swallowed.
gag, cough, and sneeze reflexes are also present to maintain a clear airway
same as adults
extrusion reflex
prevents swallowing of inedible substances (puts tongue out)
extrusion reflex fades at ___ months
4
palmar grasp reflex
grasp an object placed in their palms by quickly closing fingers on it
palmar grasp reflex disappears when?
6 weeks- 3 months
step (walk) in place reflex
hold in vertical position with their feet touching hard surface, will take a few quick, alternating steps
step reflex disappears when?
disappears by 3 mos sot that by 4 babies can bear a good portion of their weight unhindered by this reflex
placing reflex
touching the anterior surface of the lower part of leg against a hard surface. Newborn makes a few quick lifting motions, as if to step onto the table
placing reflex disappears when?
disappears by 3 mos sot that by 4 babies can bear a good portion of their weight unhindered by this reflex
plantar grasp reflex
object touches the sole of the foot at base of the toes, the toes grasp in the same manner as the fingers
plantar grasp disappears when?
8-9 months in preparation for walking
may be present during sleep for longer
tonic neck reflex
lie on back, head turns from one side or another.
arm and leg on the side toward which the head turns extend and the opposite arm and leg contract.
hard to understand purpose
tonic neck disappears _____ mos
2-3
moro (startle) reflex
startle with loud noise or jarring bassinet, or allow head to drop back about 1”.
In response, newborn abducts and extend arms and legs, then swings arms into an embrace position and pulls up the legs against the abdomen.
reflex simulates action of someone trying to ward of an attacker, then covering up the body to protect it.
moro reflex fades when?
strong for first 8 weeks, fades by 4-5 mos when baby can roll away from danger
Babinski reflex
stroke sole of foot in J curve from heel upward = fan the toes
Babinski reflex diminishes at __ mos.
3
magnet reflex
pressure applied to soles of feet, baby will push against pressure
test spinal cord integrity
crossed extension reflex
when a newborn is lying supine, if one leg is extended and sole of that foot is irritated by being rubbed with a sharp object, the other leg extends as if trying to push away the hand irritating the other leg
test spinal cord integrity
trunk incurvation reflex
when a newborn is prone, and touched along the paravertebral area on the back by a probing finger, the newborn flexes the trunk and swings the pelvis toward the touch
landau reflex
supported in prone position by a hand, the newborn should demonstrate some muscle tone, not sag into an inverted U
deep tendon reflex
both patellar and a biceps reflex are intact in a newborn
biceps test is for spinal nerves C5 & C6
patellar reflex is a test for spinal nerves L2-L4
