7+ Weeks

Embryo At 7+ Weeks
(Carnegie stage 18)
44 - 48 days, 13 - 17 mm

Features: Ectoderm-sensory placodes, lens pit, otocyst,nasal pits moved ventrally, fourth ventricle of brain
Mesoderm- heart prominence. Head-1st, 2nd and 3rd pharyngeal arch, forebrain, eye, auricular hillocks. Body- heart, liver, umbilical cord. Limb-upper and lower limb buds, foot plate, wrist, hand plate with digital rays.

By seven weeks, the baby has grown into an embryo about the size of a raspberry and has a tiny beating heart. He/she'll be growing very fast in the next few weeks...