'Chorion' presentation slideshows

Animal Development

Animal Development. The question of how a zygote becomes an animal has been asked for centuries As recently as the 18th century, the prevailing theory was called preformation

1.2k views • 85 slides

Reproductive System

Reproductive System. Purpose of Male Reproductive System. Spermato genesis Propel sperm to egg. Functions : Copulation. Penis. Functions : Transport urine & semen. Bladder. Urethra. Function : Maintain temperature of testes approx. 3 0 C below normal body temp. Controlled by cremaster.

1.23k views • 77 slides

AP Biology Review Game

AP Biology Review Game. Question 1. Which of the following is the best example of K-strategist species? A- Fruit Flies B- Fish C- Humans D-Beetles E- Desert Annual Flowers. Answer is. C-Humans . Question 2. The role of oxygen in aerobic respiration is

632 views • 53 slides

HONORS REVIEW FROG, PERCH AND AMNIOTIC EGG

HONORS REVIEW FROG, PERCH AND AMNIOTIC EGG. Identify the Frog Parts. esophagus. 14. 1. heart. 2. lungs. 13. liver. 3. stomach. 12. Gall bladder. pancreas. 11. fat body. 4. 5. testis. 10. spleen. Small intestine. 6. kidney. 9. bladder. 7. large intestine. 8.

740 views • 51 slides

Alpha-particle-induced bystander effects between zebrafish embryos in vivo

24th International Conference on Nuclear Tracks in Solids Bologna, 1-5 September 2008. Alpha-particle-induced bystander effects between zebrafish embryos in vivo. E.H.W. Yum 1 , V.W.Y. Choi 1 , V.W.T. Li 2 , S.H. Cheng 2 , and K.N. Yu 1 1 Department of Physics and Materials Science,

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Fetal Membranes, Placenta and Birth defects

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Fetal Membranes, Placenta and Birth defects

353 views • 23 slides

Early Vertebrate Development

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Fetal Membranes, Placenta and Twinning

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Human Development

Human Development . Ch 28. Gastrulation rearranges the blastula to form a three-layered embryo with a primitive gut. Gastrulation rearranges the embryo into a triploblastic gastrula. Primary Germ Layers Ectoderm Endoderm Mesoderm. Fates of the Primary Germ Layers. Ectoderm

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Fig, 47.12 (3)

In early organogenesis the archentreron is formed as lateral folds pinch the embryo away from the yolk. The yolk stalk (formed mostly by hypoblast cells) will keep the embryo attached to the yolk. The three germ layers and hypoblast cells contribute to the extraembyonic membrane system.

191 views • 4 slides