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Note:Don't let the beating heart in the accompanying clip distract you from seeing all the other body parts. There's a lot going on everywhere you look!Label Key:1. heart chambers 2. chest and abdominal walls 3. liver 4. marginal vein of left upper hand 5. left wrist 6. pharyngeal arches 7. left upper limb | ||
All ages referenced to fertilization, not last menstrual period. |