1. What are some features that are seen at 72 hours but not at 48 hours? 2. What is the name of the membrane that contains the yolk with the embryo and what is the thick egg white called? 3. What is the name of the group of cells that form the chicken embryo? The embryo comes entirely from the epiblast 4. At what age can you see the blastoderm? Draw a picture of what this might look like (label). 5. What forms the circulatory system of the chick? 6. Sketch what your chick embryo looks like (with some detail and labels as appropriate) and estimate the age of you chick. 1. What are some features that are seen at 72 hours but not at 48 hours? 2. What is the name of the membrane that contains the yolk with the embryo and what is the thick egg white called? 3. What is the name of the group of cells that form the chicken embryo? The embryo comes entirely from the epiblast 4. At what age can you see the blastoderm? Draw a picture of what this might look like (label). 5. What forms the circulatory system of the chick? 6. Sketch what your chick embryo looks like (with some detail and labels as appropriate) and estimate the age of you chick. 5. What forms the circulatory system of the chick? 6. Sketch what your chick embryo looks like (with some detail and labels as appropriate) and estimate the age of you chick. label the different arrows.

1. 1. What are some features that are seen at 72 hours but not at 48 hours?
2. What is the name of the membrane that contains the yolk with the embryo and what is the
thick egg white called?
3. What is the name of the group of cells that form the chicken embryo? The embryo comes
entirely from the epiblast
4. At what age can you see the blastoderm? Draw a picture of what this might look like (label).
5. What forms the circulatory system of the chick?
6. Sketch what your chick embryo looks like (with some detail and labels as appropriate) and
estimate the age of you chick.
1. What are some features that are seen at 72 hours but not at 48 hours?
2. What is the name of the membrane that contains the yolk with the embryo and what is the
thick egg white called?
3. What is the name of the group of cells that form the chicken embryo? The embryo comes
entirely from the epiblast
4. At what age can you see the blastoderm? Draw a picture of what this might look like (label).
5. What forms the circulatory system of the chick?
6. Sketch what your chick embryo looks like (with some detail and labels as appropriate) and
estimate the age of you chick.
5. What forms the circulatory system of the chick?
6. Sketch what your chick embryo looks like (with some detail and labels as appropriate) and
estimate the age of you chick.

2. label the different arrows