Step 1: In a one to two page paper, give an overview of the embryonic stage of development. 

• Describe the ectoderm, mesoderm, and endoderm and their associated structures. 
• Discuss the structure and function of the embryonic disk. 
• Describe embryo development and the role of chorionic villi. 
• Include any environmental factors that may cause malformations in the developing embryo.  

Assignment Expectations for Grading:  

1. Demonstration of critical thinking, scholarship, and ability to connect and apply the material 

2. Comprehensiveness and completeness of your responses 

3. Adherence to the written instructions 

4. Spelling and grammar

5. Provide 3-5 APA Style References to support your paper.

Step 2: Save and Submit your assignment

• After you complete the assignment, save a copy for yourself in an easily accessible place and submit a copy to your instructor using the dropbox.