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Human Embryo comparison of embryo sizes between Stage 14 and Stage 23
Human Embryo comparison of embryo sizes between Stage 14 and Stage 23
'''Carnegie Stage 14'''
Facts: Week 5, 31 - 35 days, 5 - 7 mm
View: Lateral view. Amniotic membrane removed.
Features: midbrain, nasal placode, lens pit, 1,2,3 pharyngeal arches, fourth ventricle of brain, 1st pharyngeal groove, heart prominence, cervical sinus, upper limb bud, mesonephric ridge, lower limb bud, umbilical cord
Identify: midbrain region, nasal placode, lens pit, 1st, 2nd and 3rd pharyngeal arches, 1st pharyngeal groove, maxillary and mandibular components of 1st pharyngeal arch, fourth ventricle of brain, heart prominence, cervical sinus, upper limb bud, mesonephric ridge, lower limb bud, umbilical cord
'''Carnegie Stage 23''' (day 56)
Facts: Week 8, 56 - 60 days, 27 - 31 mm
View: Lateral view. Amniotic membrane removed.
Features: scalp vascular plexus, eylid, eye, nose, auricle of external ear, mouth, sholder, arm, elbow, wrist, toes separated, sole of foot, umbilical cord


http://embryology.med.unsw.edu.au/wwwhuman/Stages/Images/stage14compare23.jpg
http://embryology.med.unsw.edu.au/wwwhuman/Stages/Images/stage14compare23.jpg


Image Source: [http://embryology.med.unsw.edu.au/embryo.htm UNSW Embryology]
Image Source: [http://embryology.med.unsw.edu.au/embryo.htm UNSW Embryology]


© Dr Mark Hill, Image cannot be reproduced without permission.
© Dr Mark Hill, Image cannot be reproduced without permission.
[[Category:Human Embryo]] [[Category:Carnegie Stage]] [[Category:Week 5]] [[Category:Week 8]]

Revision as of 11:51, 4 August 2009

Human Embryo comparison of embryo sizes between Stage 14 and Stage 23

Carnegie Stage 14 Facts: Week 5, 31 - 35 days, 5 - 7 mm

View: Lateral view. Amniotic membrane removed.

Features: midbrain, nasal placode, lens pit, 1,2,3 pharyngeal arches, fourth ventricle of brain, 1st pharyngeal groove, heart prominence, cervical sinus, upper limb bud, mesonephric ridge, lower limb bud, umbilical cord

Identify: midbrain region, nasal placode, lens pit, 1st, 2nd and 3rd pharyngeal arches, 1st pharyngeal groove, maxillary and mandibular components of 1st pharyngeal arch, fourth ventricle of brain, heart prominence, cervical sinus, upper limb bud, mesonephric ridge, lower limb bud, umbilical cord


Carnegie Stage 23 (day 56) Facts: Week 8, 56 - 60 days, 27 - 31 mm

View: Lateral view. Amniotic membrane removed.

Features: scalp vascular plexus, eylid, eye, nose, auricle of external ear, mouth, sholder, arm, elbow, wrist, toes separated, sole of foot, umbilical cord

http://embryology.med.unsw.edu.au/wwwhuman/Stages/Images/stage14compare23.jpg


Image Source: UNSW Embryology

© Dr Mark Hill, Image cannot be reproduced without permission.

File history

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Date/TimeThumbnailDimensionsUserComment
current21:56, 13 May 2009Thumbnail for version as of 21:56, 13 May 2009593 × 601 (32 KB)MarkHill (talk | contribs)Human Embryo comparison of embryo sizes between Stage 14 and Stage 23 http://embryology.med.unsw.edu.au/wwwhuman/Stages/Images/stage14compare23.jpg Image source: UNSW Embryology © Dr Mark Hill, Image cannot be reproduced without permission.