File:Stage 22 image 205.jpg

From Embryology

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Human Embryo Carnegie stage 22

Ventricular System

  • lateral ventricle (anterior and inferior horn)
  • interventricular foramen
  • third ventricle
  • choroid plexus

Neural System

  • subarachnoid space

In the human embryo identify the large telencephalic vesicles and the choroid plexus. The cavity in these (the lateral ventricles) communicate with the ventricle of the diencephalon (3rd ventricle) through the interventricular foramen. The basal part of the telencephalon forms the basal ganglia, a solid mass. Posteromedially these basal ganglia are in contact with the diencephalon. The large masses in either side of the diencephalon form the thalami.


Links: Image A3 labeled | neural | ventricular
Selected Embryo Histology - Week 8 (Stage 22)  
  • Selected Human Embryo Histology - Stage 22 (week 8)
  • developing cortex labeled

    developing cortex labeled

  • central nervous system and ventricles

    central nervous system and ventricles

  • central nervous system and ventricles

    central nervous system and ventricles

  • measured image

    measured image

  • nose and eyes

    nose and eyes

  • eye

    eye

  • optic nerve

    optic nerve

  • lens

    lens

  • lens and pigmented epithelium

    lens and pigmented epithelium

  • lens and pigmented epithelium

    lens and pigmented epithelium

  • head region measured

    head region measured

  • developing cochlea

    developing cochlea

  • pituitary

    pituitary

  • pituitary measured

    pituitary measured

  • pituitary

    pituitary

  • vertebra and spinal cord

    vertebra and spinal cord

  • mesonephric ducts and bladder

    mesonephric ducts and bladder

  • developing testis

    developing testis

  • developing testis labeled

    developing testis labeled

  • developing testis

    developing testis

  • developing testis labeled

    developing testis labeled

  • midgut herniation

    midgut herniation

  • pelvic region - rectum and bladder

    pelvic region - rectum and bladder

  • pelvic region - rectum and bladder labeled

    pelvic region - rectum and bladder labeled

  • pelvic region - rectum

    pelvic region - rectum

  • pelvic region - rectum labeled

    pelvic region - rectum labeled

  • Aorta filled with red blood cells

    Aorta filled with red blood cells

  • Lungs and thymus

    Lungs and thymus

  • Dorsal aorta

    Dorsal aorta

  • Placental blood vessels

    Placental blood vessels

Links: Carnegie stage 22 | Week 8

Cite this page: Hill, M.A. (2026, August 30) Embryology Stage 22 image 205.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Stage_22_image_205.jpg

What Links Here?
© Dr Mark Hill 2026, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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