Podcast
Questions and Answers
What might an absent or asymmetrical Tonic Neck Reflex indicate?
What might an absent or asymmetrical Tonic Neck Reflex indicate?
- Normal brain function
- Healthy neurological development
- Brain injury or hemiplegia (correct)
- Cerebral palsy solely
What does persistence of the Babinski Reflex beyond 1 year typically indicate?
What does persistence of the Babinski Reflex beyond 1 year typically indicate?
- Lower motor neuron lesions
- Upper motor neuron lesions or CNS dysfunction (correct)
- Healthy neurological function
- Normal developmental progress
How much weight do infants typically gain in the first 5 months of life?
How much weight do infants typically gain in the first 5 months of life?
- 5 kg (11 lb) total
- 1 kg (2.2 lb) per month
- 680 g (1.5 lb) per month (correct)
- 340 g (0.75 lb) per month
What is a potential concern if the Stepping Reflex persists beyond 4 weeks?
What is a potential concern if the Stepping Reflex persists beyond 4 weeks?
By what age should an infant's birth weight have approximately tripled?
By what age should an infant's birth weight have approximately tripled?
What is the typical age range for the disappearance of the Palmar Grasp reflex?
What is the typical age range for the disappearance of the Palmar Grasp reflex?
Which reflex is characterized by an infant's toes curling downward when the sole of the foot is touched?
Which reflex is characterized by an infant's toes curling downward when the sole of the foot is touched?
What does a weak or absent Sucking and Rooting Reflex suggest about an infant?
What does a weak or absent Sucking and Rooting Reflex suggest about an infant?
What reflex is indicated by the infant making stepping movements when held upright?
What reflex is indicated by the infant making stepping movements when held upright?
What might a persistence of the Moro Reflex beyond 4 months indicate?
What might a persistence of the Moro Reflex beyond 4 months indicate?
Which reflex disappears first, typically by 3 to 4 months of age?
Which reflex disappears first, typically by 3 to 4 months of age?
What does a persistent Plantar Grasp reflex beyond 8 months indicate?
What does a persistent Plantar Grasp reflex beyond 8 months indicate?
What might indicate dysfunction in the Moro Reflex?
What might indicate dysfunction in the Moro Reflex?
Study Notes
Infant Reflexes
- Sucking and Rooting Reflex: Elicited by stroking an infant's cheek or mouth. The infant turns their head towards the touch and starts sucking. This reflex disappears between birth and 4 months.
- Palmar Grasp: Elicited by placing an object in an infant's palm. The infant grasps the object. This reflex disappears between birth and 4 months.
- Plantar Grasp: Elicited by touching the sole of an infant's foot. The infant's toes curl downward. This reflex disappears between birth and 8 months.
- Moro Reflex: Elicited by allowing the head and trunk of an infant in a semi-sitting position to fall backward. The infant's arms and legs extend, then abduct while fingers spread. This reflex disappears between birth and 4 months.
- Tonic Neck Reflex: Elicited by turning an infant's head to one side. The infant extends the arm and leg on that side and flexes the arm and leg on the opposite side. This reflex disappears between birth and 3 to 4 months.
- Babinski Reflex: Elicited by stroking the outer edge of the sole of an infant's foot up toward the toes. The infant dorsiflexes the big toe, toes fan upward and out. This reflex disappears between birth and 1 year.
- Stepping Reflex: Elicited by holding an infant upright with his feet touching a flat surface. The infant makes stepping movements. This reflex disappears between birth and 4 weeks.
Infant Reflexes: Dysfunction
- Absence or weakness in reflexes could indicate CNS depression, muscle weakness, or nerve damage.
- Persistence beyond the typical age range could indicate developmental delay or neurological conditions.
Infant Growth & Development
- Infants gain 680g (1.5lbs) per month for the first 5 months of life.
- The average weight of a 6-month-old infant is 7.26kg (16lbs).
- Birthweight doubles by 6 months and triples by 12 months, reaching an average of 9.75kg (21.5lbs).
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Description
Test your knowledge on the various reflexes present in infants, including the sucking, rooting, and Moro reflexes. Learn about how these reflexes are elicited and at what age they typically disappear. This quiz is perfect for students of developmental psychology.
