File:Stage 22 image 161.jpg

Selected Head Images: B4 - Choroid Plexus | B5 - Cochlea | B6 - Cochlea

Inner Ear - Cross-sections of turns in the cochlear. Position of the spiral ganglia (auditory) laying adjacent to the duct. Large cavity of the utricle with the small saccule attached. Within the utricle the developing cristae ampullaris. Adjacent to the utricle a cross-section through a semi-circular canal.

Middle Ear - the maleus, a middle ear ossicle. The developing tensor tympani muscle. The auditory tube (tubo tympanic recess) extending from the oral cavity towards the middle ear.

About Stage 22 Embryo Sections - The Carnegie stage 22 human embryo is 27mm (CRL) in size and approximately equal to day 54 - 56 of development. These images have been selected to show some key features of late embryo development.

Links: Carnegie stage 22 - selected serial sections‎‎ | Carnegie stage 22 - serial sections | Carnegie stage 22 | Embryo Serial Sections

Stage 22 serial unlabeled images A1   A2   A3   A4   A5   A6   A7 B1   B2   B3   B4   B5   B6   B7 C1   C2   C3   C4   C5   C6   C7 D1   D2   D3   D4   D5   D6   D7 E1   E2   E3   E4   E5   E6   E7 F1   F2   F3   F4   F5   F6   F7 G1   G2   G3   G4   G5   G6   G7

Stage 22 Serial labeled images A1L  A2L  A3L  A4L  A5L  A6L  A7L B1L  B2L  B3L  B4L  B4L  B6L  B7L C1L  C2L  C3L  C4L  C5L  C6L  C7L D1L  D2L  D3L  D4L  D5L  D6L  D7L E1L  E2L  E3L  E4L  E5L  E6L  E7L F1L  F2L  F3L  F4L  F5L  F6L  F7L G1L  G2L  G3L  G4L  G5L  G6L  G7L

Dr Mark Hill 2013, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G