Term
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Definition
| The process of creating cell tissue layers. |
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Term
| What parts of the body are ectoderm-derived? |
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Definition
| Nervous system, cornea and lens of eye, epidermis of skin, epithelial lining of mouth and rectum. |
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Term
| What parts of the body are mesoderm-derived? |
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Definition
| Skeletal system, circulatory system, lymphatic system, musculatory system, excretory system, reproductive system, dermis of skin, lining of body cavity. |
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Term
| What parts of the body are endoderm-derived? |
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Definition
| Epithelial lining of digestive tract, respiratory tract, reproductive tract, urinary tract, liver, pancreas, thyroid, parathyroids, thymus. |
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Term
| Step 1 of Frog Gastrulation |
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Definition
| Regions of the frog blastula contain cytoplasmic determinants that determine their fate during gastrulation. |
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Term
| Step 2 of Frog Gastrulation |
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Definition
| Formation of the blastopore opening in the embryo. Surface cells move into the interior through the blastopore. |
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Term
| Step 3 of Frog Gastrulation |
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Definition
| The blastocoel shrinks as the surface cells continue to move inward, forming the three embryonic tissue layers. |
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Term
| Step 4 of Frog Gastrulation |
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Definition
| The three embryonic tissue layers are formed, ready for organogenesis. The blastopore (future anus) surrounds a plug of yolk cells. |
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Term
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Definition
| Hensons' node sends out signal to gastrulate; signaled cells invade into the embryo, creating cell layers; node migrates posteriorly |
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Term
| First Step of Neurulation |
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Definition
| Notochord forms from mesoderm cells soon after gastrulation is complete. |
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Term
| Second Step of Neurulation |
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Definition
| Signals from notochord induce inward folding of the ectoderm. |
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Term
| Third Step of Neurulation |
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Definition
| Farthest-reaching cells join to form a closed tube. |
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Term
| A product of neurulation is a hollow tube; what will this later become? |
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Definition
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