Sensory - Carnegie Stage 22

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Introduction

These histology images are from a human embryo Carnegie stage 22 occurring in week 8 (GA week 10). These are low resolution cross-section images. Where available there are also high resolution virtual slide links.


Senses Links: Introduction | Placodes | Hearing and Balance | Vision | Smell | Taste | Touch | Stage 22 | Category:Senses
| Carnegie stage 22

Hearing and Balance

Hearing Links: Introduction | Science Lecture | Medicine Lecture | Inner Ear | Middle Ear | Outer Ear | Balance | Hearing - Neural Pathway | Stage 22 | Abnormalities | Neonatal Diagnosis - Hearing | Hearing test | Sensory Introduction | Placodes | Student project | Category:Hearing
Historic Embryology 
Historic Embryology: 1902 Development of Hearing | 1906 Membranous Labyrinth | 1913 Tectorial Membrane | 1918 Human Embryo Otic Capsule | 1918 Cochlea | 1918 Grays Anatomy | 1922 Human Auricle | 1922 Otic Primordia | 1931 Internal Ear Scalae | 1933 Endolymphatic Sac | 1934 Otic Vesicle | 1934 Membranous Labyrinth | 1963 Human Otocyst | Historic Disclaimer
Virtual Slides - Stage 22
Stage 22 - Oral Cavity and Inner Ear

Stage 22 image 011.jpg

 ‎‎Mobile | Desktop | Original

Stage 22 | Embryo Slides
The following are direct links to specific structures in this virtual slide showing oral cavity and ear structures.

When the embryo virtual slide opens, the view can also be zoomed in or out from the set magnification.

Oral Cavity and Inner Ear


Stage 22 (serial labeled images)
Section Name Description
Stage 22 image 059.jpg B3L Rhombic lip (developing cerebellum). IVth ventricle. Trigeminal ganglion. Adenohypophysis. Sphenoid cartilage.
Stage 22 image 060.jpg B4L Cochlear duct and temporal cartilage. Semicircular duct (ampulla on L). precartilage of auricle (pinna). malleus (medial, L). Incus (lateral, L).
Stage 22 image 061.jpg B5L Extemal auditory meatus. Auricle.

Incus (dorsal). Malleus (ventral). Tubotympanic recess (auditory rube). Tensor tympani m. (L). Utricle.

Semicircular ducts. Intemal auditory meatus (R), containing vestibular and spiral ganglia. Endolymphatic sac (L).

Note proximity of sac to choroid plexus of 4th ventricle.

Stage 22 image 062.jpg B6L External auditory meatus. Primordium of tympanic membrane (L).

Manubrium of malleus(L). Meckel's cartilage. Stapes (R). Auditory tube.

Basal turn of cochlea duct (L). Endolymphatic sac (R). Common crus (R). Junction of utricle and saccule (R).

Vision

Vision Links: Introduction | Lens | Retina | Placodes | Extraocular Muscle | Cornea | Eyelid | Abnormalities | Student project 1 | Student project 2 | Category:Vision
Historic Vision Embryology  
1906 Eye Embryology | 1907 Development Atlas | 1912 Eye Development | 1912 Nasolacrimal Duct | 1918 Grays Anatomy | 1921 Eye Development | 1922 Optic Primordia | Historic Disclaimer
Stage 22 (serial labeled images)
Section Name Description
Stage 22 image 055.jpg A6L Cornea. Anteriorchamber. Lens. Vitreous body. Sensory retina. optic ventricle (artefact). Pigment epithelium.

Conjunctival sac. Primordium of lacrimal glands (near lateral fornix of conjunctival sac).

Interorbital ligament. Nose. upper eyelids.

Stage 22 image 056.jpg A7L Medial rectus muscle. Primordium of nasolacrimal ducts.

Upper eyelid (lateral). Lower eyelid (medial).

Stage 22 image 057.jpg B1L Optic nerve. Note extensive temporal region of retina.

Primordium of nasolacrimal ducts.

Stage 22 image 058.jpg B2L Medial and lateral rectus muscles. Pigment epithelium.

Note relationship of eye to nasal capsule, sphenoid cartilage and trigeminal ganglion.

Primordium of nasolacrimal ducts (cut obliquely).

Stage 22 image 059.jpg B3L On left, note course of maxillary division of trigeminal in relation to position of eye (superior to this level).

Smell

Stage 22 (serial labeled images)
Section Name Description
Stage 22 image 054.jpg A5L Olfactory bulbs.
Stage 22 image 055.jpg A6L Interorbital ligament. nasal septum. primitive olfactory epithelium.
Stage 22 image 056.jpg A7L Description
Stage 22 image 057.jpg B1L Description
Stage 22 image 058.jpg B2L Vomeronasal organs (dark spots) beside nasal septum.
Stage 22 image 059.jpg B3L Nasolacrimal ducts
Stage 22 image 060.jpg B4L Tongue
Stage 22 image 061.jpg B5L Unfused palatale shelves either side of tongue. section through mandible (top of image).

Vision and Hearing Selected Sections

Stage 22 selected serial labeled images
Stage 22 image 150.jpg Stage 22 image 151.jpg Stage 22 image 152.jpg Stage 22 image 153.jpg Stage 22 image 154.jpg Stage 22 image 155.jpg Stage 22 image 156.jpg
A1 head and brain A2 cortex A3 eye A4 optic nerve A5 retina A6 lens A7 CN5 and endocrine
Stage 22 image 157.jpg Stage 22 image 158.jpg Stage 22 image 159.jpg Stage 22 image 160.jpg Stage 22 image 161.jpg Stage 22 image 162.jpg Stage 22 image 163.jpg
B1 CN5 trigeminal B2 pituitary B3 auditory B4 choroid plexus B5 membranous labyrinth B6 inner ear B7 neck

All Sections

Stage 22L serial labeled images
Stage 22 image 050.jpg Stage 22 image 051.jpg Stage 22 image 052.jpg Stage 22 image 053.jpg Stage 22 image 054.jpg Stage 22 image 055.jpg Stage 22 image 056.jpg
A1L A2L A3L A4L A5L A6L A7L
Stage 22 image 057.jpg Stage 22 image 058.jpg Stage 22 image 059.jpg Stage 22 image 060.jpg Stage 22 image 061.jpg Stage 22 image 062.jpg Stage 22 image 063.jpg
B1L B2L B3L B4L B5L B6L B7L
Stage 22 image 064.jpg Stage 22 image 065.jpg Stage 22 image 066.jpg Stage 22 image 067.jpg Stage 22 image 068.jpg Stage 22 image 069.jpg Stage 22 image 070.jpg
C1L C2L C3L C4L C5L C6L C7L
Stage 22 image 071.jpg Stage 22 image 072.jpg Stage 22 image 073.jpg Stage 22 image 074.jpg Stage 22 image 075.jpg Stage 22 image 076.jpg Stage 22 image 077.jpg
D1L D2L D3L D4L D5L D6L D7L
Stage 22 image 078.jpg Stage 22 image 079.jpg Stage 22 image 080.jpg Stage 22 image 081.jpg Stage 22 image 082.jpg Stage 22 image 083.jpg Stage 22 image 084.jpg
E1L E2L E3L E4L E5L E6L E7L
Stage 22 image 085.jpg Stage 22 image 086.jpg Stage 22 image 087.jpg Stage 22 image 088.jpg Stage 22 image 089.jpg Stage 22 image 090.jpg Stage 22 image 091.jpg
F1L F2L F3L F4L F5L F6L F7L
Stage 22 image 092.jpg Stage 22 image 093.jpg Stage 22 image 094.jpg Stage 22 image 095.jpg Stage 22 image 096.jpg Stage 22 image 097.jpg Stage 22 image 098.jpg
G1L G2L G3L G4L G5L G6L G7L


Glossary Links

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Cite this page: Hill, M.A. 2017 Embryology Sensory - Carnegie Stage 22. Retrieved September 26, 2017, from https://embryology.med.unsw.edu.au/embryology/index.php/Sensory_-_Carnegie_Stage_22

What Links Here?
© Dr Mark Hill 2017, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G