Developmental Bone Anomalies (eg, Skeletal Dysplasias, Limb Malformations)
Clinical Pathology
>
Musculoskeletal & Dermatologic Pathologies
>
Developmental Disorders
Q. Regarding limb development, which is correct?
a
The AER (apical ectodermal ridge) forms a thickening at the distal end of the lower limb bud, then the upper limb bud.
b
The AER (apical ectodermal ridge) forms a thickening at the distal end of the upper limb bud, then the lower limb bud.
c
The AER (apical ectodermal ridge) forms a thickening at the distal end of both limb buds simultaneously.
d
The AER (apical ectodermal ridge) only thickens at the end of limb buds in limb malformations.
Log In
or
Start Your Free Trial
to view the answer.