Hyoid arch
From Wikipedia, the free encyclopedia
| Hyoid arch | ||
|---|---|---|
 |
||
| Head end of human embryo, about the end of the fourth week. | ||
 |
||
| Floor of pharynx of embryo. (Second arch visible near center.) | ||
| Gray's | subject #13 66 | |
| Dorlands/Elsevier | a_57/12149767 | |
The hyoid arch (or second branchial arch) assists in forming the side and front of the neck.
From its cartilage are developed the styloid process, stylohyoid ligament, and lesser cornu of the hyoid bone.
[edit] Additional images
 Human embryo from thirty-one to thirty-four days |
[edit] External links
 |
This developmental biology article is a stub. You can help Wikipedia by expanding it. |
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
| Mammalian development of embryo and development of fetus (some dates are approximate - see Carnegie stages) |
|---|
| Week 1: Zygote - Morula - Blastula/Blastomere/Blastosphere - Archenteron/Primitive streak - Blastopore - Allantois - Trophoblast (Cytotrophoblast - Syncytiotrophoblast - Gestational sac)
Week 2: Yolk sac - Vitelline duct - Bilaminar disc Week 3: Hensen's node - Gastrula/Gastrulation - Trilaminar embryo Branchial arch (1st) - Branchial pouch - Meckel's cartilage - Somite/Somitomere - Sclerotome - Myotome - Germ layer (Ectoderm, Endoderm, Mesoderm, Chordamesoderm, Paraxial mesoderm, Intermediate mesoderm, Lateral plate mesoderm, Splanchnopleure, Somatopleure) Histogenesis and Organogenesis Uterine support: Placenta - Umbilical cord (Umbilical artery, Umbilical vein, Wharton's jelly) - Amniotic sac (Amnion, Chorion) |
