Vocabulary - Development of Body Cavities Flashcards
when does embryonic folding occur?
between embryonic days 21-25
parietal mesoderm is also known as…?
somatopleuric mesoderm
visceral mesoderm is also known as…?
splanchnopleuric mesoderm
(stomach, liver, transverse colon, sigmoid colon, small intestines)
intraperitoneal
(esophagus, kidney and bladder)
retroperitoneal
(ascending/descending colon, duodenum, pancreas)
secondary retroperitoneal
what is just cranial to the neural plate?
buccopharyngeal membrane
the horseshoe shaped area cranial AND lateral to the buccopharyngeal membrane
caridiogenic area
thickened mesoderm that gives rise to portions of the liver and diaphragm
septum transversum
the intraembryonic coelom is divided into which what 2 cavities?
pericardial and peritoneal
How do the pericardial and peritoneal cavity “communicate”?
pericardioperitoneal canals
During the fifth week, when the primitive pericardial cavity begin to partition, what stucture develop “coronal” on the lateral walls?
pleuropericardial folds
During the division of the thoracic cavity, what are the 2 cavity divisions?
1) definitive pericardial cavity (heart)
2) a pair of pleural cavities (dorsolateral) (lungs)
During week 5-6, the pleuroperitoneal membranes fuse with ______ to separate the pleural cavities
septum transversum
diaphragm is composed of 4 embryonic structures
1) elements of the septum transversum
2) pleuroperitoneal membranes
3) esophageal mesoderm
4) rim of Body wall mesoderm
3 arteries that supply the abdominal gut tube
1) celiac
2) superior mesenteric
3) inferior mesenteric
Adult Derivatives of the primitive gut: pharynx, esophagus, stomach and superior 0.5 of duodenum
foregut
Adult Derivatives of the primitive gut: inferior 0.5 of duodenum, jejunum, ileum, cecum, appendix, ascending colon, right 0.66 of transverse colon
midgut
Adult Derivatives of the primitive gut: left 0.33 of transverse colon, descending colon, sigmoid colon, rectum
hindgut
In lung development, the lung buds “bifurcate” into ____________ between days 26-28
primary bronchial buds
a breathing disorder of premature newborns in which the air sacs (alveoli) in a newborn’s lungs do not remain open - beause the production of a substance that coats the alveoli (surfactant) is absent or insufficient.
Respiratory distress syndrome
organ system responsible for consuming and digesting foodstuffs, absorbing nutrients, and expelling waste
human gastrointestinal tract (GI tract)
when does the stomach rotate 90 degrees clockwise about a longitudinal axis?
~day 27 (week 7)
when does the rotation of the stomach end?
~day 56
sac created by rotation of the stomach
greater omentum
what can be formed when a lobe of the pancreas migrates around the duodenum in the wrong (opposite) direction, fusing with the dorsal pancreatic bud?
annular pancreas
condition caused by the persistence of vitelline duct (or yalk stalk) found at different (variable) lengths and still attached to the ileum.
Merkel’s diverticulum
viscera suspended within the peritoneal cavity by a mesentary
intraperitoneal
organs embedded in the body wall and covered by peritoneum
retroperitoneal
fusion of mesentary and organ with body wall
secondary retroperitoneal
in the development of the hindgut, when does the anterior primitive urogenital sinus gives rise to urogenital structures and posterior rectum?
week 4-6
in the development of the hindgut, what structure partitions the cloaca
coronal urorectal septum
at what week is the definitive gut lumen formed?
week 6
when forming the definitive gut lumen, at which week is recanalization completed by?
week 9
