UNSW Embryology

Development of the Head and Neck

Page 1 | 2 | 3 | 4 | 5 | WWW

Page LinksSelected Human Embryo Serial Sections (st22)About Notes

Previous Pages Human Embryo (st22) , Pig Embryo (st13/14)

Human Embryo (st22)- high power

Clicking on the section number will open the full image.

A7: Nasal septum. Vomeronasal organs. Hypophysis.

B1: Trigeminal ganglion and central root of trigeminal nerve.

B2: Neurohypophysis (infundibular part with hypothalamic recess of 3rd ventricle).

Residual lumen of Rathke's pouch, pars intermedia. Sphenoid cartilage.

B7,C1: Laryngeal caecum. Arytenoid swellings. Thyroid cartilage. L,R laminae and superior processes. Hyoid cartilage with sternohyoid muscles.

C2,C3: Tracheal epithelium. Note in C2, ventral tracheal cartilage. In C3 note rounded cells of hyaline tracheal cartilage, starting to push apart in central midline zone but compressed together at lateral margins. Thyroid gland.

C4: Tracheal epithelium (vacuolated) and trachealis muscle. Note regional changes in

cartilage as in C3 above. Oesophagus - epithelium (vacuolated), submucosa and muscularis externa with a few inner spiral and isolated, outer longitudinal muscle bundles.

C5,C6: Developing thymus.

About Notes

Lecture notes from the Anat 3311 1997 Science Embryology course compiled and written by Dr Mark Hill. Some notes derived from historic class notes.
Note Links to OMIM Entries are copies of originals for computers without internet access. Computers with internet access can directly access the database.

Links

Serial Sections Homepage

Human Homepage

Pig Homepage

m.hill@unsw.edu.au
Date Last Modified: 30/3/99
This site maintained by Dr M. Hill