2010 Lab 10

From Embryology

Endocrine

Stage 13

Stage 13 image 057.jpg Stage 13 image 058.jpg Stage 13 image 059.jpg Stage 13 image 098.jpg
B1L Dorsal portion of hypopharyngeal eminence. Rathke's pouch derived from ectoderm anterior to the buccopharyngeal membrane ( rudimentary adenohypophysis). B2L Dorsal portion of hypopharyngeal eminence. Rathke's pouch derived from ectoderm anterior to the buccopharyngeal membrane ( rudimentary adenohypophysis). B3L Rudimentary thyroid ventral to aortic sac (also seen in B2, ventral to the hypopharyngeal eminence). G7L (Close to midline in head region). Forebrain, midbrain, hindbrain (with thin roof). Arrowed Rathke's pouch. Floor of pharynx with foramen caecum (the tongue has not yet formed).

Stage 22

Stage 22L serial labeled images
Stage 22 image 055.jpg A6L Thalamus/hypothalamus.
Stage 22 image 058.jpg B2L Neurohyophysis and adenohypophysis. Remnant of Rathke's pouch (residual lumen) in adenohypophysis
Stage 22 image 059.jpg B3L Adenohypophysis.
Stage 22 image 066.jpg C3L Glottic region with cricoid cartilage and descending process of thyroid cartilage laterally.
Stage 22 image 067.jpg C4L Section damaged, but shows thyroid gland lateral to trachea.
Stage 22 image 068.jpg C5L Thyroid gland.
Stage 22 image 071.jpg D1L Thymus gland.
Stage 22 image 083.jpg E6L R,L adrenal glands under diaphragm
Stage 22 image 084.jpg E7L Large adrenal glands.
Stage 22 image 085.jpg F1L Adrenal glands. R. Kidney. Autonomic ganglia (partly the adrenal medulla precursors).
Stage 22 image 086.jpg F2L Kidneys (note retroperitoneal location). Cortex. Medulla. L. Adrenal gland.

Early Fetal

Now observe in these cross-sections of the week 10 fetal head the structure and position of endocrine structures in the head and neck. It is also a time to observe the position of the cochlea.

10 Week Fetus head images
Human- fetal week 10 head A.jpg Human- fetal week 10 head B.jpg Human- fetal week 10 head C.jpg Human- fetal week 10 head D.jpg

zoom lateral head slice

Stage 22 Selected

Stage 22 image 156.jpg A7 CN5 and endocrine
Stage 22 image 158.jpg B2 pituitary
Stage 22 image 165.jpg C2 pharynx Overview of embryo (stage 22) neck region where high power sections is from in C3. Thyroid gland at top of image lying anterior and extending lateral to the trachea.
Stage 22 image 166.jpg C3 trachea and thyroid Thyroid gland.
Stage 22 image 168.jpg C5 thorax Overview of embryo (stage 22) chest region where high power sections is from in C6. Thymus gland at top of image anterior to section through aortic arch.
Stage 22 image 169.jpg C6 thymus Thymus gland.
Stage 22 image 183.jpg E6 gastrointestinal Overview of embryo (stage 22) at the level of the liver where adrenals are seen.
Stage 22 image 187.jpg F3 adrenal gland Fetal and permanent adrenal cortex. The medulla of the adrenal gland is of neural crest origin and it is not yet encapsulated by the cortex.


Endocrine Links: Introduction | BGD Lecture | Science Lecture | Lecture Movie | pineal | hypothalamus‎ | pituitary | thyroid | parathyroid | thymus | pancreas | adrenal | endocrine gonad‎ | endocrine placenta | other tissues | Stage 22 | endocrine abnormalities | Hormones | Category:Endocrine
Historic Embryology - Endocrine  
1903 Islets of Langerhans | 1904 interstitial Cells | 1908 Pancreas Different Species | 1908 Pituitary | 1908 Pituitary histology | 1911 Rathke's pouch | 1912 Suprarenal Bodies | 1914 Suprarenal Organs | 1915 Pharynx | 1916 Thyroid | 1918 Rabbit Hypophysis | 1920 Adrenal | 1935 Mammalian Hypophysis | 1926 Human Hypophysis | 1927 Hypophyseal fossa | 1932 Pineal Gland and Cysts | 1935 Hypophysis | 1937 Pineal | 1938 Parathyroid | 1940 Adrenal | 1941 Thyroid | 1950 Thyroid Parathyroid Thymus | 1957 Adrenal


Hearing Links: Introduction | inner ear | middle ear | outer ear | balance | placode | hearing neural | Science Lecture | Lecture Movie | Medicine Lecture | Stage 22 | hearing abnormalities | hearing test | sensory | Student project

  Categories: Hearing | Outer Ear | Middle Ear | Inner Ear | Balance

Historic Hearing 
Historic Embryology: 1880 Platypus cochlea | 1902 Development of Hearing | 1906 Membranous Labyrinth | 1910 Auditory Nerve | 1913 Tectorial Membrane | 1918 Human Embryo Otic Capsule | 1918 Cochlea | 1918 Grays Anatomy | 1922 Human Auricle | 1922 Otic Primordia | 1931 Internal Ear Scalae | 1932 Otic Capsule 1 | 1933 Otic Capsule 2 | 1936 Otic Capsule 3 | 1933 Endolymphatic Sac | 1934 Otic Vesicle | 1934 Membranous Labyrinth | 1938 Stapes - 7 to 21 weeks | 1938 Stapes - Term to Adult | 1940 Stapes | 1942 Stapes - Embryo 6.7 to 50 mm | 1943 Stapes - Fetus 75 to 150 mm | 1946 Aquaductus cochleae and periotic (perilymphatic) duct | 1946 aquaeductus cochleae | 1948 Fissula ante fenestram | 1948 Stapes - Fetus 160 mm to term | 1959 Auditory Ossicles | 1963 Human Otocyst | Historic Disclaimer


Group Projects

Today the Group projects are finished and will now be locked for coordinator assessment.

Glossary Links

Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link

Course Content 2010

Embryology Introduction | Cell Division/Fertilization | Lab 1 | Week 1&2 Development | Week 3 Development | Lab 2 | Mesoderm Development | Ectoderm, Early Neural, Neural Crest | Lab 3 | Early Vascular Development | Placenta | Lab 4 | Endoderm, Early Gastrointestinal | Respiratory Development | Lab 5 | Head Development | Neural Crest Development | Lab 6 | Musculoskeletal Development | Limb Development | Lab 7 | Kidney | Genital | Lab 8 | Sensory | Stem Cells | Stem Cells | Endocrine | Lab 10 | Late Vascular Development | Integumentary | Lab 11 | Birth, Postnatal | Revision | Lab 12 | Lecture Audio | Course Timetable


Cite this page: Hill, M.A. (2019, March 23) Embryology 2010 Lab 10. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/2010_Lab_10

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© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G