figure 47.0 human embryo. figure 47.1 a “homunculus” inside the head of a human sperm

Figure 47.0 Human embryo

Figure 47.1 A “homunculus” inside the head of a human sperm

Figure 47.2 The acrosomal and cortical reactions during sea urchin fertilization

Figure 47.3 A wave of Ca2+ release during the cortical reaction

Figure 11.15 Calcium and inositol triphosphate in signaling pathways (Layer 3)

Figure 47.4 Timeline for the fertilization of sea urchin eggs

Figure 47.5 Fertilization in mammals

Figure 47.6 Cleavage in an echinoderm (sea urchin) embryo

Figure 47.6x Sea urchin development, from single cell to larva

Figure 47.7 The establishment of the body axes and the first cleavage plane in an amphibian

Figure 47.8x Cleavage in a frog embryo

Figure 47.8d Cross section of a frog blastula

Figure 47.9 Sea urchin gastrulation (Layer 3)

Figure 47.10 Gastrulation in a frog embryo

Table 47.1 Derivatives of the Three Embryonic Germ Layers in Vertebrates

Figure 47.11 Organogenesis in a frog embryo

Figure 47.12 Cleavage, gastrulation, and early organogenesis in a chick embryo

Figure 47.13 Organogenesis in a chick embryo

Figure 47.14 The development of extraembryonic membranes in a chick

Figure 47.15 Early development of a human embryo and its extraembryonic membranes