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Embryo- GI
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Epithelium and Glands are derived from...
Endoderm
Submucosa and Tunica Serosa/Adventitia are derived from...
Spanchnic Mesoderm
Longitudinal Folding...
Cephalic End =>
Middle part =>
Caudal End =>
Cephalic End =>ForeGut
Middle part => Midgut
Caudal End => Hind Gut
Yolk Sac is lined by ___
derm
and forms the _____
Endoderm
Primitive Gut
5 Regions of the GI tract
Stomodeum
Foregut
Midgut
Hindgut
Proctodeum
The stomodeum and proctodeum are _____ depressions
ectodermal
Buccopharyngeal Membrane formed by ____ and _____
Foregut ENDOderm
Stomodeum ECTOderm
The cloacal membrane if formed by the ____ and ____
Hindgut ENDOderm
Proctodeum ECTOderm
Stomodeum extends from the ___ to ___
Oral opening
to the buccopharyngeal opening
Foregut extends from ___ to ___
Buccopharyngeal Opening
to Cranial Intestinal Portal
The midgut extends from ____ to ____
cranial
to
caudal intestinal port
The Hindgut extends from the ____ to ____
Caudal Intestinal Port
to the
Cloacal Membrane
The proctodeum extends from the
Cloacal Membrane
to the
External Opening
The mouth derives from the:
Stomodeum
The Foregut forms the (4):
Pharynx
Esophageous
Stomach
*Cranial Duodenum
The Midgut forms the (5):
*Caudal Duodenum
Jejunem
Ileum
Cecum
*Cranial Colon
The Hindgut forms (2):
*Caudal Colon
Rectum
The Proctodeum forms (2):
Anal Canal
Anus
Greater Curvature of the stomach shifts to the ___
Left
The Pyloric Region (Caudal End) shifts to the ___
Right
The Spleen is derived from which layer?
Splanchnic Mesoderm
Omentum, Medosuodenum and Mesentery is derived from
Splanchnis Mesoderm
In ruminants, which parts develop from an outpocketing of teh simple stomach?
*Rumen, Reticulum and Omasum develop from...
Dorsal side of the stomach ->
Ventral side of the stomach ->
Dorsal -> Greater Curvature
Ventral -> Lesser Curvature
1st rotation of the stomach =>
Greater Curvature -> L
2nd rotation of the stomach =>
Caudal end -> R and Cranially
Spleen is derived from ___ of the ___
Mesoderm
of the
Dorsal Mesogastrum
Which chamber is the smallest in...
L. Ruminants-
S. Ruminants-
L Rum- Reticulum
S Rum- Omasum
What causes rotation during the development of the midgut?
Cranial loop grows faster than the caudal loop
Cranial Limb of the midgut=
Distal Duodenum
Jejunem
Ilium
Caudal Limb of the midgut=
Ileum
Cecum
Ascending and (part of) transverse Colon
Colon in...
Dogs & Cats:
Cattle:
Goats/Sheep
Equine:
Pig:
Dogs & Cats
: Straight
Cattle
: Spiral loop w/ 2centrifugal/2centripedal
Goat/Sheep:Spiral Loop w/ 3centrifugal/3centripedal
Equine
: 2 limbs that differentiate further
Pig
: Centripedal and Centrifugal coils
The Urorectal Septum is derived from:
Endoderm
Mesenchyme
The urorectal septum divides the ___ into the ___ & ___
...
cloaca
into the
Rectum
&
Urogenital Septum
The proctodeum develops into the
Anal Canal & Anus
Atresia Ani occurs when
the anal mem does not break down
Clinical Sign of Urorectal Fistula
Feces in urine
Clinical Sign of Meckel's Diverticulum
Feces from umbilicus
Clinical Signs of Omphalocele
Umbilical Hernia
Clinical Signs of Patent Urachus (Urachal Fistgula)
Urine from umbilicus
What causes omphalocele?
Midgut loop does not retract
The hepatic bud is derived from the ____
endoderm
The hepatic bud forms:
Pars Hepatica
Pars Cystica
Pars Hepatica forms (2):
Liver Parenchyma
Hepatic Ducts
In the liver, what is derived from the endoderm (4)?
Cords
Sinuses
Hepoatocytes
Lobules
In the liver, what is derived from the mesoderm (2)?
Kupffer Cells
CT cells
In the liver, what is derived from the Splanchnic Mesoderm (2)?
CT capsule
ligaments
Pars Cystica forms (2):
Cystic Duct
Gall Bladder
____ + ____ open into the Major Duodenal Papilla
Cystic Duct
+
Hepatic Duct
Accessory Pancreatic Duct is absent in
Sheep/Goats
Pancreatic Duct is absent in
Ox
Pigs
Pancreas is derived from the
Endoderm
Rotation of the stomach results in the formation of the..
Epipolic Foramen
The lung bud appears as an outgrowth from the...
ventral wall of the foregut
Laryx, trachea and bronci are derived from
endoderm
Cartilagenous and muscular components of the respiratory system are derived from
Splanchnic Mesoderm
Pulmonary Macrophages are derived from
Mesoderm
Lobes of R lung:
Cr
Middle
Ca
Accessory
Special respiratory structure found in ruminants:
Tracheal Bronchus
The tracheal bronchus connects the...
Esophogus
R Cranial lobe
Significant respiraoty changes that occur just after birth (4):
Increase [CO2} =>
Respiratory Center =>
Respiration =>
Lungs expand
What begins to contrict w/ the onset of respiration?
Ductus Arteriosus
What prduces surfactant?
Pneumocyte II
How is fluid removed from the lungs (3):
Pharyx/Oral Cavity
Evaporation
Pulm. Lymphatics
What causes Respiratory Distress (2)?
Insufficient surfactant
Hypovolemia
Clinical Symptoms of Respiratory Distress (2)?
Seizures
Barker Foal Syndrome
Author
HLW
ID
50058
Card Set
Embryo- GI
Description
Embryo- GI
Updated
2010-11-18T20:23:02Z
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