embryology

pigment rich, little yolk. polar bodies are given off.

lacking pigment, yolk rich

small cells containing only DNA that soon dissapears

structure formed on opposite side of sperm entry, will form notochordal mesoderm

blue, epidermis and nervous system

red, cardiac/skeletal/smooth muscle, kidney, red blood cells

yellow, digestive track respiration, urinary, auditory, thyroid

fluid filled region of blastula, early blastulation

structure from invagination

gastrulation movements, surface cells move inward. 2/3 down from animal pole and opposite side of sperm entry.

additional mesoderm and endoderm precursor cells pass over

interior cavity when blastocoel collapses, becomes the gut/luman

yellow, formed during dorsal lip of blastopore exposed at vegetal surface

green, precursor to brain and spinal cord, neural groove deepens as neural folds meet too tube

green, forms in neural tube and is spinal tube

change from neural plate to neural tube

bilateral blocks of mesoderm that forms along neural tube and form skeletal muscle, cartilage, tendons, dermis

opposite primitive streak, ectodermal tissue thickens and flattens

forms at end of neural plate when forcing them together to form tube

blastocoel collapsing during late gastrulation and neuralation

forms brain, anterior portion of neural tube

out growing of brain through ectoderm

first of sequence of kidneys in the mesoderm

where tail will form

follows cleavage and precedes gastrulation

state after fertilization in which the egg divides by mitosis and forms in blastula stage

follow cleavage, cells rearrange and endoderm and mesoderm cells move inward and ectoderm spreads along outside.

folding inward of a sheet of cells

type of gastrulation in which sheets of cells move inward and spread over inner surfaces