Facts: Week 6, 37 - 42 days, 8 - 11 mm
View: Lateral view. Amniotic membrane removed.
Identify: nasal pit, nasolacrimal groove, eye, 1st, 2nd and 3rd pharyngeal arches, 1st pharyngeal groove, maxillary and mandibular components of 1st pharyngeal arch, auricular hillocks, fourth ventricle of brain, heart prominence, upper limb bud, mesonephric ridge, lower limb bud, umbilical cord
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, mesonephric ridge
Limb: upper and lower limb buds, hand plate, developing arm
Link to next page in this Practical 11 - Stage 17
Movie of Growth through the Embryonic period (this shows a human embryo growing, all images are to scale)
Human Development (3 Mb, this is a large movie, images are not to scale)
Movie of Limb Growth(this shows development of the human arm from bud to paddle, to hand with arm)
Movie of Mouse Embryo Growth (this shows a mouse embryo growing)
Movie of Rotating Embryo(this shows an early embryo from all angles)
All Moviesthis shows many different ways of looking in at changes in different embryos.