A baby on examination shows unilateral moro’s reflex with positive palmar grasp reflex. The site of lesion is :
Correct Answer: C5 - C6
Description: Ans. is 'b' C5-C6 Moro's reflex is a neonatal reflex which develops by 28th wk of gestation and disappears by 12 wks of age.Moro reflex is obtained by placing the infant in semi-upright position, then the head is momentarily allowed to fall backward with immediate re-support by the examiner's hand.The child symmetrically abducts and extends the arms and flexes the thumbs, followed by flexion and adduction of upper extremities.Unilateral Moro's reflex is seen in :Erb s palsy (C5-CJ damageSpastic hemiplegia*Fracture of humerus or clavicle *.Exaggerated Moro's reflex is seen in - cerebral damage*.Some important facts about neonatal reflexes :Sucking reflex* - observed by 14 wks of gestation.Rooting reflex* - develops by 28 wks gestation.Palmar grasp reflex* -develops by 28 wks and disappears by 4 months of age.Toxic neck reflux - disappears by 8 months of age.
Category:
Pediatrics
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now