GA1 - Quiz 7 (copy)

Which statement is true regarding jejunum?

It has tall and numerous circular folds

Irritation of the parietal peritoneum in later stage of appendicitis causes pain and tenders in this area:

McBurney’s Point

Ileum is mostly located in which quadrant of abdomen?

Right lower quadrant

Which ligament is used by surgeons in determining boundary b/t duodenum and jejunum?

Ligament of Treitz

Entire small intestine receives parasympathetic innervation via which nerve?

Vagus

Lymphatic fluid coming from small intestine flows towards the:

Cisterna chyli

The ileum receives blood supply through branches arising from the:

Superior mesenteric arteries

Which statement is true regarding the ascending colon?

It receives blood supply through the ileocolic and right colic arteries

Which structural landmark is used to distinguish the duodenum from the jejunum?

Ligament of Treitz

Which pair of nerve structures is involved in the sympathetic innervation of the rectum?

Sacral splanchnic nerves; inferior hypogastric plexus

Which pair of nerve structures is involved in parasympathetic innervation of the rectum?

Pelvic splanchnic nerves; intramural ganglia

The external anal sphincter receives nerve supply through the:

Pudendal nerve

Which statement is true regarding the jejunum?

It is located mostly in the upper left quadrant of the abdomen.

Which statement is true regarding the duodenum?

Its descending portion is located on the right side of L1-L3 vertebrae

Which organ is derived from the midgut?

Ileum

The upper half of the anal canal is delineated from the lower half of the anal canal by the:

Dentate line

The jejunum and ileum receive autonomic nerve supply through the:

Superior mesenteric plexus

The duodenum receives blood supply through branches arising from the:

Gastroduodenal and superior mesenteric arteries

Which statement is true regarding the ileum?

Its mesentery has fat deposited evenly all throughout compared to the jejunum.

Which statement is true regarding the jejunum?

It has taller and more numerous circular folds than the ileum.

What are the parts of the small intestine?

Duodenum, jejunum, ileum

What is the shape of the small intestine and how long?

C-shaped tube; 10 inches long

Which part of the duodenum crosses horizontal to L3?

Third part

The duodenojejunal flexure is supported by which structure?

Ligament of Treitz

The major duodenal papilla is located in which part of the duodenum?

Second

Blood supply of the duodenum comes from which arteries?

Superior & inferior pancreaticoduodenal arteries

Lymphatic drainage of the duodenum:

Pancreatoduodenal nodes, then to the celiac nodes & superior mesenteric nodes

Which part of the small intestine has more fat in the mesentery?

Ileum

The blood supply of the jejunum and ileum is from which artery?

Superior mesenteric artery

What is the nerve supply of jejunum & ileum?

Celiac plexus & superior mesenteric plexus

The jejunum & ileum measures how long?

20 ft long

Lymph from jejunum and ileum drains first into:

Mesenteric nodes

Which of the following is NOT a gross feature of the large intestine?

Villi

Large Intestine: the cecum blood supply?

Anterior & Posterior cecal branches of ileocolic artery

Large Intestine: the cecum lymph drainage?

Mesenteric nodes to superior mesenteric nodes

Tenia omentalis is located along which attachment?

Omental attachment

The appendix receives its blood supply from the:

Appendicular artery

The Appendicular artery is a branch of:

Branch of Posterior cecal artery or direct branch of ileocolic artery

Large intestine: Appendix lymph drainage?

Mesenteric nodes to superior mesenteric nodes

Large intestine: Appendix nerve supply?

Superior mesenteric plexus; afferent fibers for pain enter T10 segment

Referred pain from the appendix typically enters the spinal cord at:

T10

Which part of the colon is retroperitoneal?

Ascending colon

The transverse colon receives blood from:

Middle colic and left colic arteries

The rectum begins at which vertebral level?

S3

The upper half of the rectum drains lymph to:

Pararectal lymph nodes, to Inferior mesenteric node

The lower half of the rectum drains lymph to:

Internal iliac lymph nodes

The lower portion anal canal receives its nerve innervation from:

Inferior rectal nerve & perineal branch of S4

The upper portion anal canal receives its nerve innervation from:

Hypogastric plexuses

The anal canal is approximately:

1.5 inches long

Large Intestine: Blood Supply

Superior mesenteric artery, inferior mesenteric artery, & internal iliac artery

What are the branches of superior mesenteric artery?

Middle colic artery, right colic artery & ileocolic artery (MRI)

What are the branches of inferior mesenteric artery?

Left colic artery, sigmoidal arteries, superior rectal artery (LSS)

What are the branches of internal iliac artery?

Middle rectal artery & inferior rectal artery (MI)

What is the blood supply of foregut?

Celiac trunk

What is the sympathetic nerve supply of foregut?

Greater splanchnic; celiac ganglia (T5-T9)

What is the parasympathetic nerve supply of foregut?

Vague nerve

What is the blood supply of Midgut?

Superior mesenteric artery

What is the sympathetic nerve supply of Midgut?

Lesser splanchnic, least splanchnic, superior mesenteric ganglia (T10-T11)

What is the parasympathetic nerve supply of midgut?

Vagus nerve

What is the blood supply of Hindgut?

Inferior mesenteric artery

What is the sympathetic nerve supply of Hindgut?

Lumbar splanchnic, inferior mesenteric ganglia, sacral splanchnic nerves, inferior hypogastric plexus (L1-L2)

What is the parasympathetic nerve supply of hindgut?

Pelvic splanchnic nerve