Embryology & Animal Architecture

Embryology & Animal Architecture - Term Definition...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Term: Theory of Pre-Formation Definition: Organisms develop from miniature versions of themselves. Term: Theory of Epigenesis? Definition: Fertilized egg contains building materials that develop an organism over time. Term: What is Fertilization? Definition: Union of sperm and egg to form zygote Term: Fertilization accomplishes two things? Definition: Activates development and restores diploid number Term: What is embryogenesis? Definition: Beginning of embryo
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Term: Define Gastrulation? Definition: Single layered blastula is reorganized into 3-layer Gastrula Term: Define differentiation? Definition: Less specialized cells become more specialized cells Term: Define Polyspermy? Definition: Fertilization of egg by many sperm Term: What prevents Polyspermy? Definition: Fast block and formation of a fertilization membrane Term: What is a fast block? Definition: Electrical change in membrane "electric fence"
Image of page 2
Term: What is a zygote? Definition: Fertilized egg Term: Growth of embryo proceeds by? Definition: Mitosis Term: What is a blastomere? Definition: Cell produced by cleavage of zygote Term: 8 early embryo stages? Definition: Zygote, 2-cell, 4-cell, 8-cell, Morula (16-cell), early Blastula (32-cell), late Blastula (64-cell), Gastrula (64-cell) Term: Define Morula stage? Definition: Embryo at early stage of development consisting of blastomeres (solid ball)
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Term: Early Blastula stage? Definition: Hallow sphere of cells (doughnut) Term: Gastrula stage? Definition: Cells form 3 layers and archenteron cavity forms (resembles a pie shell) Term: All animal cells look similar until this stage? Definition: Gastrula Term: In Gastrula stage cells migrate to interior via?
Image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern