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Related Flashcards
Cards In This Set
| Front | Back |
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5 weeks
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What are the levels for the branchial plexus?
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C5-L1
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What are the levels for the lumbar plexus?
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L3-S3
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What occurs on day 33?
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Upper limb: hand plate, forearm, arm, and shoulder are more distinguishable
Lower limb: the cranial part is more rounded then the caudal part |
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What occurs on day 37?
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Upper limb: the carpal (joint) region is surrounded by a cressenteric rim called the digital plate.
Lower limb: the thigh, leg, and foot are distinct |
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The digital plate will give rise to the ________.
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Fingers and toes (or digits)
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What occurs on day 38?
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The upper limb: finger rays are visible*Apoptosis occursThe lower limb: foot plate has formed
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Day 44?
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Upperlimb: The fingers are more pronounced & bend in UL where elbow is more definedLower limb: toe rays are visible
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Day 47?
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Upper limb --> ventral flexion has taken placeLower limb --> flexion toward midline has taken place.. toe rays are prominent
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Dorsal Movements?S.AB.E.
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SspinationAbductionExtension
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Ventral Movements?P.A.F.
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PronationAdductionFlexion
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What does the lateral plate mesoderm form?
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The limbs. (bones, ligaments, and tendons)
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What do neural crest cells give rise to?
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Melanocytes (pigment cells)and Schwann cells
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What two embryonic tissues are in the limb buds?
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Mesodermal (core) ectoderm (outer layer)
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What do somites give rise to?
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Skin, bone, and muscle
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