COGS 17 HW 3 Study Guide Questions
and Actual Answers.
Two-week Embryo: term & chart
1. Inner layer of cells that becomes organs and glands
2. Outer layer of cells that becomes the skin and nervous systems
3. The middle layer of cells that becomes bones, muscles and blood vessels - Answer 1.
Endoderm
2. Ectoderm
3. Mesoderm
Embryonic Develop: terms & charact
1. Long enclosed chamber that becomes CNS
2. Ridges that curl toward one another
3. Failure of riidges to fuse
4. Surface of fused ridges that become the PNS
5. When ridges fuse, this hollow chamber, the length of the embryo, is formed
6. Hardening dorsal surface of embryo - Answer 1. Neural Tube
2. Neural Folds
3. Spinal Bifida
4. Neural Crest
5. Neural Tube
6. Neural Plate
Proliferation and Migration: terms & charact
1. Undifferentiated ectodermal cells
2. Inner lining of neural tube, from which neurons will migrate
3. When stem cells divide into one stem cell and one neuron or glia cell
4. Cells emanating from ventricular zone for neurons to migrate along
5. When stem cells divide into two identical, daughter stem cells - Answer 1. Stem Cells
2. Ventricular Zone
3. Asymmetrical division
4. Radial Glia
5. Symmetrical Division
and Actual Answers.
Two-week Embryo: term & chart
1. Inner layer of cells that becomes organs and glands
2. Outer layer of cells that becomes the skin and nervous systems
3. The middle layer of cells that becomes bones, muscles and blood vessels - Answer 1.
Endoderm
2. Ectoderm
3. Mesoderm
Embryonic Develop: terms & charact
1. Long enclosed chamber that becomes CNS
2. Ridges that curl toward one another
3. Failure of riidges to fuse
4. Surface of fused ridges that become the PNS
5. When ridges fuse, this hollow chamber, the length of the embryo, is formed
6. Hardening dorsal surface of embryo - Answer 1. Neural Tube
2. Neural Folds
3. Spinal Bifida
4. Neural Crest
5. Neural Tube
6. Neural Plate
Proliferation and Migration: terms & charact
1. Undifferentiated ectodermal cells
2. Inner lining of neural tube, from which neurons will migrate
3. When stem cells divide into one stem cell and one neuron or glia cell
4. Cells emanating from ventricular zone for neurons to migrate along
5. When stem cells divide into two identical, daughter stem cells - Answer 1. Stem Cells
2. Ventricular Zone
3. Asymmetrical division
4. Radial Glia
5. Symmetrical Division
