Abdominal wall and intestines Flashcards Preview

Anatomy terms > Abdominal wall and intestines > Flashcards

Flashcards in Abdominal wall and intestines Deck (40)
Loading flashcards...
1

Flat muscles of abdominal wall

External obliques
Internal obliques
Transverse obliques

2

External obliques attachment and function

Origin= Ribs 5-12
Insertion= Iliac crest (top of bony pelvis)
Function= Contralateral rotation of torso

3

Internal obliques attachment and function

Origin= Iliac crest and inguinal ligament
Insertion= Ribs 10-12
Function= Bilateral, unilateral rotation and ipsilateral

4

Tranverses abdominus attachment and function

Origin= Ingunial ligament, costal cartilages 7-12, iliac crest
Insertion= Xiphoid process, pubic crest, conjoint tendon
Function= compression of abdomen

5

Innervation of flat muscles

Thoracocabdominal nerves (T6-T11), Subcostal nerve (T12)

6

Vertical muscles

Rectus abdominus (6 pack muscle)
Pyramidalis

7

Splits the abdomen

Linea alba

8

Rectus abdominus is insected by fibrous strips

Tendinous intersection

9

Rectus abdominus attachment and function

Origin= crest of pubis (bottom of pelvis)
Inserts= xiphoid process
Function= compression
Six pack muscle

10

Pyramidalis muscle attachment and function

Orgin=pubic crest
Inserts= tension of linea alba

11

4 parts of the duodenum

superior, descending, inferior, ascending

12

Differences between the jujenum and ileum

Jejunum
-Thick wall
-Longer vasa recta
-less arcades
-Red

Ileum
-Thin
-Shorter vasa recta
-more arcades
-pink

13

Circular folds and large flaps projecting into the lumen of the small intestine

Plicae circulares

14

Bulge in the small intestine at birth

Meckels diverticulum

15

What innervates the duodenum and jejunum

Gastrointestinal artery- branch of coeliac trunk
Pancreaoduodenal-Branch of superior mesenteric

Jejunum
Superior mesenteric artery from aorta level 1

16

4 parts of the colon

Ascending, transverse, descending, siphoid

17

Small pouches of peritoneum filled with fat attached to the surface of the large intestine

appendices epiptocia

18

Longitudinal,3 strips of muscle

Teniae coli

19

Teniae coli contraction and produce sacculations

Haustrations

20

What supplies midgut

Superior mesenteric artery
Right and middle colic artery
Acending colon and 2/3 transverse

21

What supplies the hindgut

Inferior mesenteric artery
Left colic artery
1/3 transverse, descending and siphoid

22

Retroperitoneal

Fuses the posterior serious wall only covering the anterior surface
Oesophagus, pancreas, duodenum

23

Intraperitoneal

Orgain within gut completely covered/ surrounded with peritoneum= stomach, gut, ileum and jejunum, transverse colon

24

Functions of the abdominal wall

1. Forms firm and flexible wall which keeps the abdominal viscera in the abdominal cavity
2. protects from injury
3. maintains anatomical position of viscera against gravity
4.assists forceful expiration by pushing abdominal viscera upwards
5. intra-abdominal pressure

25

Areas of the abdomen

Top left and right- Hypochrondriac
top middle- epigastric

Middle left and right- lumbar
middle middle- umbilical

Bottom left and right- iliac
Bottom middle- hypogastric

26

Planes of the abdomen

Mid-clavicular= middle clavicle to mid igunal point
Transpyloric= L1 (xiphoid process and umbilicus)
Trans- tubercular= Tubercular plane L5

27

Small intestine function

Assists absorption and digestion of food
Extends from the pylorus of stomach to the ileocaceal junction

28

Duodenum

Most proximal portion of the small intestine
Runs from pylorus of stomach to deudenojujenal junction
Make c shape

29

Duodenum divided into 4 parts

1. superior (L1)
2. descending (L1-L3)
3. inferior (L3) Crosses aorta and vena cava
4. Ascending (L3- L12)

30

Vasa recta

are straight arteries coming off from arcades in the mesentery of the jejunum and ileum, and heading toward the intestines