Development Of Body Cavities, Mesentery And Diaphragm

Front 1

divides mesoderm into splanchnic and somatic layers at cranial end of embryo during 3rd week of development?

Back 1

intraembryonic coelom

Front 2

horseshoe-shaped space in mesoderm during 3rd week of development?

Back 2

intraembryonic coelom

Front 3

cranial curved end of intraembryonic coelom open or closed?

Back 3

closed by mesoderm

Front 4

cranial limb of intraembryonic coelom open or closed?

Back 4

closed by mesoderm

Front 5

caudal limb of intraembryonic coelom open or closed?

Back 5

open into extraembryonic coelom

Front 6

curved portion of intraembryonic coelom forms what during the head fold of the 4th week of development?

Back 6

pericardial cavity

Front 7

pericardial cavity formed from what during 4th week of development?

Back 7

curved portion of intraembryonic coelom from head fold

Front 8

cranial limb of intraembryonic coelom forms what during head fold of the 4th week of development?

Back 8

primitive pleural cavities (pericardioperitoneal canals)

Front 9

primitive pleural cavities formed from what during 4th week of development?

Back 9

cranial limb of intraembryonic coelom from head fold

Front 10

fusion of caudal limbs of intraembryonic coelom forms what during lateral fold of the 4th week of development?

Back 10

peritoneal cavity

Front 11

peritoneal cavity formed from what during 4th week of development

Back 11

fusion of caudal limbs of intraembryonic coelom from lateral fold

Front 12

degenerates to form peritoneal cavity during 4th week of development?

Back 12

inferior portion of caudal limbs of intraembryonic coelom

Front 13

What eventually forms when mesoderm folds to form cavity lined w/ endoderm and surrounded by splanchnic mesoderm during 4th week of development?

Back 13

lungs and GI organs

Front 14

cavity located ventrally in thorax caused by head and body folds during 4th week of development?

Back 14

pericardial cavity

Front 15

cavities located dorsally in thorax caused by head and body folds during 4th week of development?

Back 15

pleural cavities

Front 16

cavity located in abdominal area caused by head and body folds during 4th week of development?

Back 16

peritoneal cavity

Front 17

piece of mesoderm pulled ventrally and caudally during head fold of 4th week of development?

Back 17

septum transversum

Front 18

What separates pleural and pericardial cavities in the developing embryo?

Back 18

pleuropericardial membranes

Front 19

pleuropericardial membranes develop from?

Back 19

folds in lateral body wall

Front 20

contain phrenic nn. during development?

Back 20

pleuropericardial folds

Front 21

contain common cardinal vv. during development?

Back 21

pleuropericardial folds

Front 22

pleuropericardial folds grow towards midline to form?

Back 22

pleuropericardial membranes

Front 23

pleuropericardial membranes fuse w/ each other to form?

Back 23

fibrous pericardium

Front 24

fibrous pericardium formed by what during development?

Back 24

fusion of pleuropericardial membranes

Front 25

phrenic nn. pulled w/ pleuropericardial membranes to "fuse" to?

Back 25

fibrous pericardium of heart

Front 26

separates thoracic and abdominal cavities?

Back 26

diaphragm

Front 27

septum transversum, mesentery of the esophagus, pleuroperitoneal membranes, and dorsal and lateral body wall make up?

Back 27

diaphragm

Front 28

mesoderm located caudal to heart?

Back 28

septum transversum

Front 29

lies opposite 3rd-5th somites?

Back 29

septum transversum

Front 30

forms central tendon of diaphragm?

Back 30

septum transversum

Front 31

forms medial portion of diaphragm?

Back 31

mesentery of esophagus

Front 32

forms posterolateral part of diaphragm?

Back 32

pleuroperitoneal membranes

Front 33

When do pleuroperitoneal membranes form?

Back 33

5th week of development

Front 34

fuse w/ septum transversum and mesentery of the esophagus to form a primitive diaphragm in 6th week of development?

Back 34

pleuroperitoneal membranes

Front 35

When does the primitive diaphragm form by?

Back 35

6th week of development

Front 36

forms periphery of diaphragm?

Back 36

dorsal and lateral body walls

Front 37

gives the muscular, striated appearance to the diaphragm in a newborn?

Back 37

body walls

Front 38

lies opposite cervical somites during 4th week of development?

Back 38

diaphragm

Front 39

lies opposite L1 vertebra by 3rd month of development?

Back 39

diaphragm

Front 40

diaphragm pulled down near lumbar vertebrae because?

Back 40

dorsal portion of embryo develops faster than ventral portion

Front 41

supplies motor innervation to diaphragm?

Back 41

phrenic n. (C3-C5)

Front 42

supplies sensory innervation to middle part of diaphragm?

Back 42

phrenic nn.

Front 43

supplies sensory innervation to periphery of diaphragm?

Back 43

lower intercostals nn.

Front 44

extends from ventral body wall to caudal portion of foregut during develolpment?

Back 44

ventral mesentery

Front 45

derived from inferior part of septum transversum?

Back 45

ventral mesentery

Front 46

peritoneum surrounding liver during development formed from?

Back 46

ventral mesentery

Front 47

falciform ligament during development formed from?

Back 47

ventral mesentery

Front 48

attaches ventral body wall to liver during development?

Back 48

falciform ligament

Front 49

carries umbilical v. during development?

Back 49

falciform ligament

Front 50

umbilical v. becomes what during development?

Back 50

ligamentum teres hepatis (round ligament)

Front 51

ligamentum teres hepatis formed from what during development?

Back 51

umbilical v.

Front 52

lesser omentum formed from what during development?

Back 52

ventral mesentery

Front 53

runs from liver to stomach and duodenum during development?

Back 53

lesser omentum

Front 54

contains common bile duct, proper hepatic a., and portal v. during development?

Back 54

lesser omentum

Front 55

consists of double layer of peritoneum during development?

Back 55

dorsal mesenteries

Front 56

extends from caudal end of esophagus to cloaca during development?

Back 56

dorsal mesenteries

Front 57

blood vessels, nn., and lymphatics course through what during development?

Back 57

mesenteries

Front 58

initially all structures are suspended in peritoneal cavity, or located where during development?

Back 58

intraperitoneal

Front 59

positional changes in digestive tract cause some parts to become located where during development?

Back 59

retroperitoneal

Front 60

structures suspended in peritoneal cavity by what during development?

Back 60

dorsal mesenteries

Front 61

structures pressed against what during development that causes adjacent layers of peritoneum to fuse?

Back 61

posterior abdominal wall

Front 62

fused layers of peritoneum degenerate during development and result in what?

Back 62

retroperitoneal digestive structures

Front 63

lesser sac formed from what during development?

Back 63

mesogastrium

Front 64

formed posterior to stomach during development?

Back 64

lesser sac

Front 65

another name for lesser sac?

Back 65

omental bursa

Front 66

When does lesser sac form during development?

Back 66

5th-6th weeks

Front 67

What is formed when clefts occur in mesogastrium and from the clockwise rotation of the stomach during development?

Back 67

lesser sac

Front 68

What contains the pancreas and tail of the spleen during development?

Back 68

lesser sac

Front 69

What occurs when the lesser sac enlarges during development?

Back 69

tail of pancreas becomes retroperitoneal and liver moved to lateral edge of abdomen

Front 70

What causes tail of pancreas to become retroperitoneal during development?

Back 70

enlargement of lesser sac

Front 71

What causes liver to move laterally during development?

Back 71

enlargement of lesser sac

Front 72

spleen located where during development?

Back 72

intraperitoneal

Front 73

attached to posterior abdominal wall by the lienorenal ligament during development?

Back 73

spleen

Front 74

attached to stomach by gastrolienal ligament during development?

Back 74

spleen

Front 75

dorsal mesogastrium lengthens inferior to stomach to form what during development?

Back 75

greater omentum

Front 76

When does greater omentum develop?

Back 76

5th-8th weeks

Front 77

lengthening dorsal mesogastrium forms a fold anterior to what during development?

Back 77

developing intestines

Front 78

What forms from the more rapidly developing mesogastrium on the right curve of stomach as it lies on its side during development?

Back 78

greater omentum

Front 79

U-shaped fold of mesogastrium fuses to form greater omentum when in development?

Back 79

12th week

Front 80

lies against posterior abdominal wall during development?

Back 80

mesoduodenum

Front 81

contains head of pancreas and all but most proximal part of duodenum (retroperitoneal structures) during development?

Back 81

mesoduodenum

Front 82

suspends ileum, jejunum, cecum, and appendix in peritoneal cavity during development?

Back 82

mesentery proper

Front 83

ileum, jejunum, cecum and appendix all remain located where during development?

Back 83

intraperitoneal

Front 84

holds ascending and descending colon pressed against posterior abdominal wall (retroperitoneal) during development?

Back 84

mesocolon

Front 85

suspends transverse colon (intraperitoneal) during development?

Back 85

transverse mesocolon

Front 86

suspends sigmoid colon (intraperitoneal) and diminishes in length during development?

Back 86

sigmoid mesocolon

Front 87

condition associated w/ herniation of abdominal structures into the thoracic cavity b/c of a defect in the diaphragm that can be treated by surgery?

Back 87

posterolateral defect of diaphragm (congenital diaphragmatic hernia)

Front 88

condition occurring every 1/2000 births, constitutes 8% of all fatal congenital anomalies, and is five times more common on the left than the right?

Back 88

congenital diaphragmatic hernia

Front 89

condition caused by abnormal formation of one of the pleuroperitoneal membranes w/ the septum transversum and mesentery of the esophagus?

Back 89

congenital diaphragmatic hernia

Front 90

condition resulting in respiratory difficulties, flat abdomen, lack of bowel sounds in the abdomen, and polyhydramnios due to impaired fetal swallowing?

Back 90

congenital diaphragmatic hernia