Blastulation - Wikipedia Blastulation is the stage in early animal embryonic development that produces the blastula In mammalian development, the blastula develops into the blastocyst with a differentiated inner cell mass and an outer trophectoderm
Blastula | Embryonic Development, Cell Division Gastrulation | Britannica blastula, hollow sphere of cells, or blastomeres, produced during the development of an embryo by repeated cleavage of a fertilized egg The cells of the blastula form an epithelial (covering) layer, called the blastoderm, enclosing a fluid-filled cavity, the blastocoel
43. 5B: Cleavage, the Blastula Stage, and Gastrulation After the cleavage has produced over 100 cells, the embryo is called a blastula The blastula is usually a spherical layer of cells (the blastoderm) surrounding a fluid-filled or yolk-filled cavity (the blastocoel)
Understanding Blastula in Developmental Biology The blastula stage is a critical phase in embryonic development, marking a pivotal point in the formation of a multicellular organism from a single fertilized egg
Blastula - Definition and Examples - Biology Online Dictionary A blastula is an early embryonic stage in various animal species that forms via cell division and differentiation post-fertilization It has a hollow, spherical shape containing a fluid-filled cavity known as the blastocoel
BLASTULA Definition Meaning - Merriam-Webster The meaning of BLASTULA is an early metazoan embryo typically having the form of a hollow fluid-filled rounded cavity bounded by a single layer of cells
Blastula - an overview | ScienceDirect Topics The blastula is the first identifiable stage of early embryo development that is common to many animals, and consists generally of a hollow epithelial layer enclosing a fluid-filled cavity: the blastocoel
BLASTULA AND TYPES OF BLASTULA - ZOOLOGYTALKS | 19 11 2025 The classic blastula, also known as the hollow or spherical blastula, is the archetypal form observed in many animals, including vertebrates and invertebrates It consists of a single layer of cells surrounding a fluid-filled cavity known as the blastocoel
What is the Difference Between Blastula and Blastocyst Blastula refers to an animal embryo at the early stage of development when it is a hollow ball of cells whereas blastocyst refers to mammalian blastula in which some differentiation of cells has occurred