The evolution of rounded hand plate or foot plate into separate fingers or toes. Concept introduction: Limb buds are formed in the appendicular skeleton in the 4 th week of gestation. Upper limb buds appear a few days earlier than the lower limb buds. Thus, the development of lower limbs lags behind about 2 to 4 days than upper limbs. The proximal parts of the limbs differentiate earlier than the distal parts.

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Chapter 8.12, Problem 37WDL

Summary Introduction

To determine:

The evolution of rounded hand plate or foot plate into separate fingers or toes.

Concept introduction:

Limb buds are formed in the appendicular skeleton in the 4th week of gestation. Upper limb buds appear a few days earlier than the lower limb buds. Thus, the development of lower limbs lags behind about 2 to 4 days than upper limbs. The proximal parts of the limbs differentiate earlier than the distal parts.

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