The cleavage stage is a critical early phase in embryonic development, characterized by rapid cell divisions without significant growth, leading to the formation of a multicellular structure known as a blastula. This stage is essential for setting up the basic body plan and initiating the differentiation of cells into various tissues and organs.

Cleavage Stage

Embryonic development is the process by which a fertilized egg transforms into a fully formed organism through a series of highly regulated stages, including cleavage, gastrulation, and organogenesis. This complex process is governed by genetic instructions and environmental cues, ensuring the proper formation of tissues and organs necessary for survival and function.

Embryonic Development

Rapid cell divisions

Multicellular structure

The blastula is an early stage of embryonic development in animals, characterized by a hollow sphere of cells surrounding a fluid-filled cavity called the blastocoel. It forms after the cleavage stage and precedes gastrulation, playing a crucial role in the spatial arrangement of cells for future tissue and organ development.

Concepts

Your Lessons