digestive system practical Flashcards

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1
Q

buccinator

A

inserts into wall of cheek

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2
Q

where does the esophagus get most of its blood supply?

A

from the aorta

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3
Q

rugae

A

longitudinal folds allow digestion

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4
Q

where does the stomach push its contents to?

A

pylorus and duodenum

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5
Q

parietal peritoneum

A

lines the body wall

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6
Q

visceral peritoneum

A

covers external surfaces of most digestive organs

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7
Q

mesentery

A

fold of peritoneum that attaches organs to posterior body wall

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8
Q

lesser omentum

A

connects stomach to liver

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9
Q

greater omentum

A

connects stomach to surrounding organs

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10
Q

omentum

A

fold of peritoneum that connects organ to stomach or the anterior body wall

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11
Q

ligament

A

fold of peritoneum that connects two organs together

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12
Q

three subdivisions of the small intestine

A

duodenum, jejunum, ileum

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13
Q

what is the function of the stomach

A

mechanical breakdown of food churned into chyme by peristalsis

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14
Q

what is the function of the small intestine

A

nutrient absorption, enzyme digestion

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15
Q

what is the function of the large intestine

A

absorption and compaction

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16
Q

teniae coli

A

3 thickened bands of longitudinal smooth muscle fibers

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17
Q

haustra

A

pouches of colon between teniae

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18
Q

parts of the colon in order

A

ascending –> transverse –> descending –> sigmoid

19
Q

pectinate line

A

marks the junction between gut tube and body wall structures

20
Q

what is the innervation of structures above the pectinate line? blood supply & venous drainage?

A

visceral motor and sensory fibers, inferior mesenteric artery, portal venous system

21
Q

what is the innervation of structures below the pectinate line? blood supply andveins drain?

A

somatic motor and sensory fibers, internal iliac artery, caval venous system

22
Q

intraperitoneal

A

almost completely covered with visceral peritoneum, conceptually invaginated into a closed sac (organs remain surrounded by peritoneal cavity)

23
Q

extraperitoneal / retroperitoneal

A

located outside peritoneal cavity, partially covered with peritoneum (organs fuse to wall & lose mesentery)

24
Q

what is the function of the liver

A

bile secretion, metabolic functions, storage of glycogen

25
Q

what are the four lobes of the liver?

A

left, right, quadrate, caudate

26
Q

portal hepatis

A

passage of hepatic portal vein, hepatic artery, hepatic ducts, hepatic nerve plexus, lymphatics

27
Q

falciform ligament

A

bind the liver to the anterior abdominal wall

28
Q

round ligament

A

extends from umbilicus to liver, remnant of umbilical vein that carried oxygenated blood from placenta to fetus

29
Q

what is the function of the gallbladder?

A

store and concentrate bile

30
Q

what do the right and left hepatic portal ducts drain?

A

right and left portal lobes of liver

31
Q

what forms the bile duct?

A

common hepatic duct and cystic duct

32
Q

what is the function of the pancreas?

A

secrete enzymes that help digest sugars

33
Q

intraperitoneal organs

A

liver, stomach, ileum & jejunum, transverse colon, sigmoid colon

34
Q

retroperitoneal organs

A

duodenum, ascending colon, descending colon, rectum, pancreas

35
Q

foregut & blood supply

A

esophagus, stomach, pancreas, duodenum, liver, bile ducts, celiac trunk

36
Q

midgut & blood supply

A

small intestine distal to bile duct, cecum, appendix, ascending & most of transverse colon, SMA (superior mesenteric artery)

37
Q

hindgut & blood supply

A

remainder of the colon, IMA (inferior mesenteric artery)

38
Q

what is the blood supply of oral cavity?

A

external carotid artery

39
Q

blood supply of lesser curvature

A

R & L gastric arteries

40
Q

blood supply of greater curvature

A

R & L gastro-mental arteries

41
Q

blood supply of the stomach

A

celiac trunk –> common hepatic –> left gastric –> splenic arteries

42
Q

what do the gastric veins drain into?

A

portal, splenic, and superior mesenteric veins

43
Q

innervation of the small intestine

A

splanchnic and vagus nerve