It is relatively common for the Flexor digitorum superficialis to be missing from the little finger, bilaterally and unilaterally, which can cause problems when diagnosing a little finger injury.
The grasp reflex (newborn reflexes) It occurs when placing an object, such as a finger, onto the infant's palm (palmar grasp) or sole (plantar grasp). The infant responds by flexing fingers or curling the toes. The palmar grasp usually disappears by 3 to 4 months and the plantar grasp by 6 to 8 months.
Infancy: Sensation, Perception and Learning. THE NEWBORN Babies can see, hear, and respond to interesting sights, sounds, and other sensory stimuli at a much earlier age than was originally believed.A New Baby's Reflexes The newborn, or neonate, has a repertoire of reflexes, or involuntary responses to external stimuli.