L6 - Intestines

Question 1

Small Intestine is how many meters long?

Answer 1

7 meters long

Question 2

In cadavers intestines are longer. T or F

Answer 2

True.

Question 3

Why are intestines shorter in living humans?

Answer 3

tonic contraction

Question 4

Duodenum and it’s parts : Superior

Answer 4

1st part :Superior
first 2 cm intraperitoneal
celiac trunk

Question 5

Duodenum and it’s parts: Descending

Answer 5

2nd Part.

Celiac trunk. Receives enzymes from the pancreas. Hugs the head of the pancreas

Question 6

Duodenum and it’s parts: Horizontal

Answer 6

3rd part. Superior Mesenteric Artery.

Question 7

Duodenum and it’s parts: Ascending

Answer 7

4th part.

SMA. joins the jejenum

Question 8

Which of the following are NOT primary or secondary retroperitoneal?A. Pancreas
B. Kidneys
C. Suprarenal Glands
D. Duodenum (Descending, Horizontal and Ascending)
D. Descending Colon
E. Ascending Colon
F. Transverse Colon

Answer 8

F. Transverse Colon

Question 9

Celiac Trunk

Answer 9

Left Gastric
Splenic Artery
Common Hepatic

Question 10

Ligament of Treitz:

Answer 10

Demarcates the duodenum and jejunum junction

Made by Right Crus

Question 11

Ligament of Treitz location

Answer 11

Ligament of Treitz passes behind the pancreas and is attached above to the spine and the diaphragm.

Question 12

Ligament of Treitz contraction:

Answer 12

Contraction of this muscle widens the angle of the duodenojejunal flexure facilitating movement of the intestinal contents

Question 13

Ligament of Treitz : composed of?

Answer 13

This muscle is commonly composed of a slip of skeletal muscle from the diaphragm and a fibromuscular band of smooth muscle from the 3rd and 4th parts of duodenum

Question 14

Mesentery hold what?

Answer 14

blood
lymphatic
nervous supply

Question 15

Jejenum increases surface area because of ?

Answer 15

folds

Question 16

Pilcae Circulares are only in what?

Answer 16

Jejenum and Proximal ileum

Question 17

Terminal Ileum has what?

Answer 17

Lymphatic Nodules:

Peyers patch

Question 18

Bariatric Surgery

Answer 18

Jejenum is connected to the upper patrt of the stomach bypassing lower parth of the stomach and duodenum which results in less absorption

Question 19

Movement of Bowel:

Answer 19

Ileocecal junction
Cecum
Vermiform appendix
Ascending colon
Transverse colon
Descending colon
Sigmoid colon
Rectum
Anus

Question 20

Retroperiotenal organs in Large Intestines

Answer 20

Ascending Colon

Descending Colon

Question 21

Which of these does NOT have plicae circulares?
A. Proximal Ileum
B. Jejunum
C. Terminal Ileum
D. A and C

Answer 21

C. Terminal Ileum

Question 22

Large Intestine or Colon

Answer 22

Retroperitoneal:

Ascending and Descending

Intraperitoneal:

Transverse colon
Sigmoid
Appendix on mesoappendix

Question 23

Large intesitine or colon has 7 parts

Answer 23

1. Cecum
2. Ascending colon (retroparitoneal)
3. Transverse colon(intraperitoneal)
4. Descending colon (Retroperitoneal)
5. Sigmoid colon (intraperitoneal)
6. Rectum
7. Anal canal

Question 24

Tenia Coli allows for what organ to fxn?

Answer 24

Large intestine

Question 25

Tenia Coli produces?

Answer 25

Haustra

this passes stool

Question 26

Hirschsprung’s disease (congenital megacolon)

Answer 26

LACK of Haustra –> No stool is passed due to lack of neural control

This is the most important disease of large intestine in infants and children

• defecation is not possible because
• a segment of the lower rectum is completely devoid of ganglion cells in the submucosa and muscularis layers

Question 27

Various possible locations for the appendix (In general, right lower quadrant) T or F

Answer 27

True

Question 28

Do we have more lymphatic nodules in the appendix later on in life or earlier?

Answer 28

earlier

Question 29

Most common location of Appendix?

Answer 29

Retrocecal postion

Question 30

Appendix does what for the immune system?

Answer 30

B-cells differentiation into immunocompetent cells

contains lymphatic nodules that help form immune cells

Question 31

Rectum, involuntary muscle?

Answer 31

Internal anal sphincter : urge

Question 32

Rectum, voluntarily muscle ?

Answer 32

External anal sphincter : pressure you put.

Question 33

Blood Supply to intestines. Foregut :

Answer 33

Celiac Trunk

Question 34

Blood Supply to the intestines : Midgut

Answer 34

SMA

Question 35

Blood Supply to the Hindgut :

Answer 35

IMA

Question 36

SMA Branches

Answer 36

Anterior & Posterior INFERIOR Pancreaticoduodenal Arteries
Ileocolic Artery
Right Colic Artery
Middle Colic Artery
Intestinal Arteries
Secondary Arcades

Question 37

Which of these most likely supplies the appendix?

Answer 37

A. Ileocolic Artery

Question 38

IMA Branches

Answer 38

Marginal Artery
Left Colic Artery
Sigmoid Arteries
Superior Rectal Artery

Question 39

the right side of the body : ?? lymphatic trunk,

Answer 39

Right

Question 40

Left side of the body :

?? thoracic duct

Answer 40

Left Thoracic Duct

Question 41

Chyle cystern

Answer 41

Chyle cystern is a thin-walled sac at the inferior end of the thoracic duct.

Question 42

Chyle Cistern –>

Answer 42

Chyle Cistern–>Thoracic Duct -> Left Subclavian Vein

Question 43

Foregut + Midgut -> (Parasympathetic nerve) + (Sympathetic nerve)?

Answer 43

Foregut + Midgut -> Vagus (P) + Thoracic Splanchnics (S)

Question 44

Hindgut->

(Parasympathetic nerve) + (Sympathetic nerve)?

Answer 44

Hindgut->Pelvic Splanchnics (P) + Lumbar Splanchnics (S)