Slideshow: Hands and ArmsShoulder and Upper Arm |
#164, Slide 51 of 7111 weeks |
| Buy NowFrom The Biology of Prenatal Development. |
Note:The muscles and nerves around the shoulder arrived some time ago! The collar bone is just beneath the surface and remains visible even as the skin continues to thicken.Label Key:
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| All ages referenced to fertilization, not last menstrual period. |


