Digestive Flashcards Preview

Anatomy Exam 3 > Digestive > Flashcards

Flashcards in Digestive Deck (38)
Loading flashcards...
1

What level of the vertebrae does the esophogus begin?

C6

2

Aorta and Vena Cavae are on which sides of the body?

Aorta: Left Vena Cavae: Right

3

3 Areas where the esophogus may become restricted and restrict the passage of a bolus.

Junction of pharynx and esophagus at the level of the epiglottis

Passes through diaphragm

Aorta and left bronchus cross in front of the esophagus

4

Layers of Esophagus

1.)Mucosa: squamous epithelium, lamina propria, muscularis mucosae
2.) Submucosa w/ esophageal glands
3.) musularis externa (longitudinal and circular)

NOTE: No serousa!, only adventitia

5

Muscular composition of esophagus

Upper 1/3- striated skeletal muscle
Middle- skeletal/smooth muscle
Lower 1/3- smooth muscle

In muscularis externa there is longitudinal (outer portion) and circular muscle (inner portion)

6

Blood supply to esophagus

Inferior thyrioid artery, thoracic aorta, left gastric artery

7

Function of stomach

Bulk storage of ingested food
mechanical and chemical breakdown of ingested food

8

Rugae and its function

Longitudinal folds in the stomach, mix and churn chyme
Increase surface area for nutrient absorption

9

Pathway of blood supply to and from stomach

TO: celiac trunk--> right and left gastric arteries
*Right gastric artery branches off of common hepatic artery of celiac trunk
FROM: Gastric veins-->portal vein

10

Arterial blood supply to regions of the stomach

Left gastric: feeds cardia and lesser curvature
Right gastric: lesser curvaute
Splenic artery: feeds greater curvature

11

3 Segments of Small Intestine

duodenum- shortest, ends at flexur where the head of the pancreas meets the small intestines

jejunum- middle of small intestine, moderate thickness of mesentary

illeum-longest, thicker mesentary, ends at illeocecal valve just before the ceucm


duodenum: 26 centimeters (9.84 inches)
jejunum: 2.5 meters (8.2 feet)
ileum: 3.5 meters (11.5 feet)

12

Lining of intestines

plicae

13

Mesentaric artery supplies blood to which parts of the intestines?

Superior mesenteric artery- supplies right side of colon

Inferior mesenteric artery- supplies left side of colon

14

Ligament of Trietz- Significance, Location, and Function

Function- suspensory muscle of duodenum, connects diaphragm to small intestine.

Location- between duodenum and jejunum

Significance- marks the upper and lower GI tract

15

What are the longitudinal muscle fibers called?

Teniae Coli

16

Haustra

located in the large intestine
permit distention and elongation

17

Boundaries of Abdominal Cavity

1.) Abdominal walls- (Anterolateral wall) external/internal obliques, transverses, rectus muscles
(Posterior wall) 5 lumbar vertebrae, thoracolumbar fascia. psoas, quadrates lumborum, oblique, nerves, and vessles.

2.) Diaphragm
3.) Pelvis

18

Center point of horizontal and vertical lines that divide abdomen into quadrants

Belly button

19

Regions of abdomen that dont fit into quadrants

epigastric
periumbilical
suprapubic

20

Quadrants of Abdomen

Upper right- liver, right kidney, duodenum, illeum, ascending colon, hepatic flexure, transverse colon, part of pancreas

Upper left- stomach, spleen, part of pancreas, jejunum, illeum, transverse colon, splenic flexure, part of descending colon

Lower left- part of descending colon, sigmoid colon, illeum, jejunum?

Lower right- illeum, jejunum, cecum, appendix, part of ascending colon

21

Organs in Retroperitoneal Cavity

SAD PUCKER + thoracic duct, bladder, and colon

22

Organs in Peritoneal Cavity

Stomach, liver, intestines

23

Parietal Peritoneum

lies along rib cage

24

Visceral Peritoneum

lies on intestines/organs
encases intestines, stomach, and liver

25

Function of Omentum

fat deposition, immune function, wall off tumor, infection, and wound

26

Borders of Greater Omentum

greater curvature of stomach down to pelvis back up to the transverse colon

Apron-like

27

Borders of Lesser Omentum

Lesser curvature of stomach, proximal duodenum to liver

28

Foramen of Winslow Significance and location

Location- cavity between lesser omentum and pancreast, allows access to pancreas, spleen, IVC, and aorta

29

Splenic connection to liver

splenic vein to hepatic portal vein

30

Functions of Spleen

Immune- WBC, Antibodies--white pulp
Recycles RBC-- red pulp