Development of a Chick Embryo

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Presentation transcript:

Development of a Chick Embryo Page 50 in lab book

Safety Eggs may contain Salmonella bacteria. Do not consume any part of the egg. Wash hands thoroughly when finished. Clean all surfaces. http://web.uconn.edu/mcbstaff/graf/Student%20presentations/Salmonellatyphi/StyphiImage1.jpg

Study of a hen’s egg http://lafianzoo.com/wp-content/uploads/2009/01/10.jpg

Eggs come in many different sizes http://lujs.tripod.com/difference-in-eggs2.jpg

Cutting open your egg. 1. Draw an oval on the egg as shown in Figure 1. 2. Carefully open the egg, do not break the yolk. http://urbanext.illinois.edu/eggs/images/eggdiagram.gif

Clean up 1 Throw away the bowl with the egg in it. 2. Clean with hot soap and water all dissection instruments then dry: Probe scissors forcepts 3. Wash down your lab table and dry

Part II: Chick Embryos Page 53 There are only 4 slides that are 16 hours and 24 hours. You will have to share the slides. Draw the image under low power in the margin of your lab book. Answer all questions on the page http://images.google.com/imgres?imgurl=http://www.aps.uoguelph.ca/~swatland/chick56.jpg&imgrefurl=http://www.aps.uoguelph.ca/~swatland/ch8_2.htm&usg=__YP_prC4svWFO3e6IDS0YLeVkfhk=&h=1996&w=1204&sz=2706&hl=en&start=5&um=1&tbnid=8awhUHwtYsvPGM:&tbnh=150&tbnw=90&prev=/images%3Fq%3Dchick%2Bembryology%26as_st%3Dy%26um%3D1%26hl%3Den%26sa%3DG

33 Hour Chick Embryo: page 54 Obtain a slide of either a 33 or 48 hour embryo. Draw the embryo in the margin of your lab book. Answer all questions on page 54-55, 5-9. Return Slides, put microscope away. http://images.google.com/imgres?imgurl=http://www.aps.uoguelph.ca/~swatland/chick56.jpg&imgrefurl=http://www.aps.uoguelph.ca/~swatland/ch8_2.htm&usg=__YP_prC4svWFO3e6IDS0YLeVkfhk=&h=1996&w=1204&sz=2706&hl=en&start=5&um=1&tbnid=8awhUHwtYsvPGM:&tbnh=150&tbnw=90&prev=/images%3Fq%3Dchick%2Bembryology%26as_st%3Dy%26um%3D1%26hl%3Den%26sa%3DG

Analysis and Interpretations 1. Digestive Nervous Circulatory 2. Nervous Digestive 3. Cellular communication is most important in development. 60 hours https://www.eevec.vet.ed.ac.uk/secure/embryology/chick60hpainted.jpg