1. The Endodermal Derivatives
PJT Denusta, PhD
Biology Department
College of Arts and Sciences
West Visayas State University

2. http://images.google.com.ph/imglanding?q=frog%20embryo%20endoderm&imgurl=http://www.uoguelph.ca/zoology/devobio/210labs/XScolo
red.GIF&imgrefurl=http://www.uoguelph.ca/zoology/devobio/210labs/ntfrogXS.htm&usg=__kRwi00TkMIWskrHLo8-
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79wS5_OJoGC7QPfvKiBCQ&gbv=2&sa=G&start=12#tbnid=N50r7xqmYwBk1M&start=51

3. http://images.google.com.ph/imglanding?q=endoderm&imgurl=http://chickscope.beckman.uiuc.edu/explore/embryology/day04/graphics/4focuson.jpg&imgrefurl
=http://chickscope.beckman.uiuc.edu/explore/embryology/day04/4Focuson_1.html&usg=__gCQ8m4hvYa3fSTK7dj976Lhap5c=&h=333&w=300&sz=14&hl=en
&sig2=ZSrijrEt31ZVgMlZuY4heA&itbs=1&tbnid=nGG650LaPZNYzM:&tbnh=119&tbnw=107&prev=/images%3Fq%3Dendoderm%26gbv%3D2%26ndsp%3
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4. http://images.google.com.ph/imglanding?q=chick%20embryo%20endoderm&imgurl=http://www.ncbi.nlm.nih.gov/bookshelf/picrender.fcgi%3F
book%3Ddbio%26part%3DA3455%26blobname%3Dch14f2.jpg&imgrefurl=http://www.ncbi.nlm.nih.gov/bookshelf/br.fcgi%3Fbook%3Ddbio
%26part%3DA3455&usg=__liJoM8APrLU1yMDwiJI4ooBJS4Q=&h=405&w=461&sz=50&hl=en&sig2=RTCifmpL56GQsjpdE9g_yA&itbs=1
&tbnid=lMNQ8AYmS5WIgM:&tbnh=112&tbnw=128&prev=/images%3Fq%3Dchick%2Bembryo%2Bendoderm%26gbv%3D2%26hl%3Den
%26sa%3DG&ei=t8BwS9apDozc7AOXkqyQCQ&gbv=2&sa=G&start=0#tbnid=lMNQ8AYmS5WIgM&start=0

5. http://images.google.com.ph/imglanding?q=endoderm&imgurl=http://chickscope.beckman.uiuc.edu/explore/embryology/day04/graphics/4focuson.jpg&imgrefurl
=http://chickscope.beckman.uiuc.edu/explore/embryology/day04/4Focuson_1.html&usg=__gCQ8m4hvYa3fSTK7dj976Lhap5c=&h=333&w=300&sz=14&hl=en
&sig2=ZSrijrEt31ZVgMlZuY4heA&itbs=1&tbnid=nGG650LaPZNYzM:&tbnh=119&tbnw=107&prev=/images%3Fq%3Dendoderm%26gbv%3D2%26ndsp%3
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8. http://images.google.com.ph/imglanding?q=endoderm&imgurl=http://embryology.med.unsw.edu.au/Movies/larsen/endoderm.jpg&i
mgrefurl=http://embryology.med.unsw.edu.au/Medicine/BGDAfaq.htm&usg=__dLtEChY1TvkQyI41CE5fBeAA5sE=&h=262&w=
587&sz=31&hl=en&sig2=oFPXUYPYWV2stbZVCYY-
6A&itbs=1&tbnid=XITEFihdc83CAM:&tbnh=60&tbnw=135&prev=/images%3Fq%3Dendoderm%26gbv%3D2%26hl%3Den%26
sa%3DG&ei=S7pwS6PMEYGC7QO5vKiBCQ&gbv=2&sa=G&start=13#tbnid=XITEFihdc83CAM&start=17

11. http://www.gamalei.net/syaffolee/embryo1.jpg

12. http://isc.temple.edu/marino/embryology/parch98/ARCHI97/Img004.gif
-Pharynx
-Esophagus
-Stomach
-duodenum
-Liver and pancreas
-Respiratory system
(alveoli to larynx)

13. http://isc.temple.edu/marino/embryology/parch98/ARCHI97/Img004.gif
The Pharynx

16. http://images.google.com.ph/imglanding?q=derivatives%20of%20pharyngeal%20pouches&imgurl=http://www.pathology.vcu.edu/
education/endocrine/images/2-
1.jpg&imgrefurl=http://www.pathology.vcu.edu/education/endocrine/lab2.a.html&usg=__qbY6UtdvdTLEcUtjmzVrtU2aqAs=&h=
475&w=651&sz=60&hl=en&sig2=fV8sWmaVWSoyQGqFZClHDQ&itbs=1&tbnid=3_X1xfzQw9gUOM:&tbnh=101&tbnw=138
&prev=/images%3Fq%3Dderivatives%2Bof%2Bpharyngeal%2Bpouches%26gbv%3D2%26hl%3Den%26sa%3DG&ei=kL1wS87
mBI3k7AOj_4GNCQ&gbv=2&sa=G&start=0#tbnid=llbvrYZVS-G1TM&start=4

17. Derivatives of the pharynx
 From floor - thyroid and tongue
 From the pouches
– Eustachian tube to middle ear-from 1st pouches
– Palatine tonsils-from 2nd pouches
– Thymus-from 3rd and 4th pouches
– Parathyroids-from 3rd and 4th pouches
– Ultimobranchial bodies-from 5th pouches
Remember cells that fill up thymus, thyroid,
parathyroid and ultimobranchials are from neural
crest (rhombomeres)

18. http://www.bartleby.com/107/Images/large/image979.gif

19. www.med.unc.edu/.../nerv_htms/nerv016a.htm
How about Rathke’s pouch ?

20. The Digestive
Tube and Its
Derivatives

24. Liver, Pancreas, and Gallbladder

26. http://www.ehponline.org/members/200
0/suppl-3/555-561sadler/fig8.jpg
Formation of the Pancreas

27. Development of Liver
 Whole length of digestive tube has capability to
form liver as assayed by ability to produce alpha
fetoprotein and albumin
 Notochord inhibits the liver forming capability
 Heart mesenchyme FGF blocks the effect of
notochord allowing liver to form near heart
 Liver cords are formed from endoderm
 Sinusoids are from vitelline veins

30. Some fetal functions of the liver
 Produces blood formed elements
 Produces urea
 Produces albumin

36. Generating Functional Pancreatic β Cells

38. The Gallbladder
http://connection.lww.com/Products/sadler/images/figurelarge13-4.jpg

40. The Respiratory Tube

44. http://www.embryology.ch/images/rrespiratory/01phasen/
r1l_ueberblick_airway.gif

46. End

48. http://images.google.com.ph/imglanding?q=endoderm&imgurl=http://chickscope.beckman.uiuc.edu/explore/embryology/day04/graphics/4focuson.jpg&imgrefurl=ht
tp://chickscope.beckman.uiuc.edu/explore/embryology/day04/4Focuson_1.html&usg=__gCQ8m4hvYa3fSTK7dj976Lhap5c=&h=333&w=300&sz=14&hl=en&sig2
=ZSrijrEt31ZVgMlZuY4heA&itbs=1&tbnid=nGG650LaPZNYzM:&tbnh=119&tbnw=107&prev=/images%3Fq%3Dendoderm%26gbv%3D2%26ndsp%3D20%26
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49. http://images.google.com.ph/imglanding?q=frog%20embryo%20endoderm&imgurl=http://www.uoguelph.ca/zoology/devobio/210labs/XScolored.GIF&imgref
url=http://www.uoguelph.ca/zoology/devobio/210labs/ntfrogXS.htm&usg=__kRwi00TkMIWskrHLo8-
YoZcAZSo=&h=255&w=340&sz=17&hl=en&sig2=BjXxnKrhAjf8Y-ffq0UOFw&itbs=1&tbnid=9YCg-
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7QPfvKiBCQ&gbv=2&sa=G&start=12#tbnid=9YCg-ZSKyHEIgM&start=16

50. http://images.google.com.ph/imgres?imgurl=http://sprojects.mmi.mcgill.ca/embryology/Final%2520Images/Final_primitive_gi%2520(fig%25201).gif&imgrefurl=http://sproje
cts.mmi.mcgill.ca/embryology/gi/pgm.htm&usg=__GO-Md-
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D40%26gbv%3D2%26ndsp%3D20%26hl%3Dtl%26sa%3DN

51. http://embryology.med.unsw.edu.au/notes/images/endo/dev-rabbit-pituitary.jpg
stomodeum

52. http://images.google.com.ph/imgres?imgurl=http://sprojects.mmi.mcgill.ca/embryology/Final%2520Images/Final_primitive_gi%2520(fig%25201).
gif&imgrefurl=http://sprojects.mmi.mcgill.ca/embryology/gi/pgm.htm&usg=__GO-Md-
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53. http://images.google.com.ph/imgres?imgurl=http://sprojects.mmi.mcgill.ca/embryology/Final%2520Images/Final_primitive_gi%2520(fig%25201).
gif&imgrefurl=http://sprojects.mmi.mcgill.ca/embryology/gi/pgm.htm&usg=__GO-Md-
4u2oyUH_tpOubmWTMW8LI=&h=644&w=700&sz=60&hl=tl&start=53&tbnid=rICmHIRrr40geM:&tbnh=129&tbnw=140&prev=/images%3Fq
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