Embryology Ch. 10

Front 1

The major arterial supply for the hindgut is the:

Back 1

Inferior mesenteric artery

Front 2

The midgut segmnet caudal to its junction with the yolk sac becomes the:

Back 2

Cecal diverticulum

Front 3

Liver

Back 3

Foregut

Front 4

Lungs

Back 4

Foregut

Front 5

Ileum

Back 5

Midgut

Front 6

Parathyroid glands

Back 6

Pharyngeal pouches

Front 7

Cecum

Back 7

Midgut

Front 8

Descending colon

Back 8

Hindgut

Front 9

Urachus

Back 9

Allantois

Front 10

Most of the urinary bladder

Back 10

Hindgut

Front 11

Pancreas

Back 11

Foregut

Front 12

Jejunum

Back 12

Midgut

Front 13

Transverse colon, distal one-half

Back 13

Hindgut

Front 14

Tranverse colon, proximal one-half

Back 14

Midgut

Front 15

Pylorus

Back 15

Foregut

Front 16

Variable growth of the cecum causes variable positioning of the appendix; most common is a:

Back 16

Retrocecal appendix

Front 17

A neonate has a membrane-covered sac of intestines protruding through the umbilicus.

Back 17

Omphalocele

Front 18

A 6-month old has had intermittent vomiting, irritability, and a tender abdomen, waking her up from sleep on two occasions. She presents to the ER with a tense, painful abdomen, decreased bowel sounds, and bloody diarrhea.

Back 18

Midgut volvulus

Front 19

A three-year-old boy is brought for evaluation of a protrusion from his umbilicus. The protruding mass is covered by skin and can be pushed back through the umbilicus. Auscultation of the mass reveals bowel sounds.

Back 19

Umbilical hernia

Front 20

A thirty-year-old man presents with severe abdominal pain and indigestion. The abdominal exam reveals normal bowel sounds, no masses, normal liver and spleen. Stool guiac is positive for occult blood. He is observed for possible appendicitis, but his white blood cell count and temperature remain normal.

Back 20

Meckel diverticulum

Front 21

The pectinate line marks the division between:

Back 21

Hindgut endoderm from ectoderm of the proctodeum

Front 22

The perineal body, the center of the perineum in adults, is the point of:

Back 22

Fusion between the urorectal septum and the cloacal membrane.

Front 23

A one year old with Down syndrome has had 2 urinary tract infections, and chronic constipation. The mother reports that the child strains at the stool, and that the stool is well-formed but narrow. Rectal exam discloses a narrow canal filled with soft stool.

Back 23

Partial anorectal agenesis with fistula

Front 24

A one year old without medical problems presents for evaluation of chronic constipation with intermittent diarrhea. Rectal exam discloses a dilated, empty rectal ampulla and a small punch biopsy of the rectum reveals a paucity of autonomic neurons.

Back 24

Hirschsprung anomaly

Front 25

A newborn presents with distended abdomen, hyperactive bowel sounds, and no documented passage of meconium upon review of the nursing notes. Rectal examination reveals a normal anal opening able to admit only the tip of the finger. Inspection of the open anus shows a bluish membrane that bulges with attempts at defecation.

Back 25

Imperforate anus

Front 26

A newborn has a mass protruding from the umbilicus. A thin membrane covers the intestines, and there is no sign of intestinal gangrene. This is most likely an example of:

Back 26

Omphalocele