UNSW Embryology

Beginnings, Growth and Development

© Dr Mark Hill (2006)

Acknowledgements

Carnegie stage 18

Facts: Week 7, 44 - 48 days, 13 - 17 mm

View: Lateral view. Amniotic membrane removed.

Identify: pigmented eye, eyelid, nasolacrimal groove, external acoustic meatus, heart, digital rays, liver prominance, thigh, ankle, foot plate, umbilical cord

Events

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

Glossary of Terms

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S |T | U | V | W | X | Y | Z

Next

Link to next page in this Practical 11 - Stage 19

Quick Movie Links

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.

UNSW Embryology ISBN: 0 7334 2321 3

UNSW CRICOS Provider Code No. 00098G