Anterior Abdomen and Peritoneum Flashcards Preview

Anatomy and Radiology Test 2 > Anterior Abdomen and Peritoneum > Flashcards

Flashcards in Anterior Abdomen and Peritoneum Deck (88):
1

Ab organs protected by

Thoracic cage and pelvis

2

9 regions of abdoment

Epigastric
Umbilical
Pubic
Left/R hypochondriac
R/L lateral (lumbar)
L/R Inguinal

3

Sucostal plane

Divides top and middle row

4

Transtubercular plane

Divides middle and lower rows

5

Midclavicular pplanes divide

Right and Left from middle row

6

Anterolateral ab wall superficial fascai

Fatty superficial (Camper's)
Deep membranous (Scarpas)

7

What is Scarpas renamed

Colles in inguinal region

8

Anterolateral deep fascia

Deep investing fascia

9

External abdominal oblique fibers run

Inferiorly and medially (hands in pockets)

10

Internal abdominal oblique fibers run

Perpindicular to external oblique (superiorly and medially)

11

Internal ab oblique changes direction at ____ to _____

ASIS
Medial and inferior

12

Transversus abdominus fibers run ____ and how to do they change?

Horizontally...inferiro to ASIS, fibers run same as internal oblique

13

Inguinal ligament formed by

Inferior free border of aponeuorsis of external ab obqliue between ASIS and pubic tubercle

14

Rectus abdominis runs ____ and enclosed by _____

Vertical
Enclosedb y aponeuroses of muscle

15

Tendinous intersections

Interruptions of rect abdom by horizontal bands

16

Rectus sheath composed of what and formed by what?

Longitudinal pocket of anterior rectus sheath and posterior rectus sheath
Formed by aponeuroses of ext ab oblique, internal ab oblique, and transversus abdominus

17

Linea semilunaris

Where anterolateral ab wall muscles continuous with retus sheath

18

Actions of anterlateral ab muscles

Support and compress viscera
Flex vertebral column with bilateral contraction
Lateral flexion of column with unilat contract
Rotation of trunk when internal ab oblique and contralateral external ab oblique contract simulataneous (turns toward internal ab oblique side)

19

Innervation of anterolateral wall muscles

Intercostal nerves T7-T12 and L1

20

Ipsilateral contraction of external and internal oblique results in

Lateral trunk flexion toward side of contraction

21

Contralateral contraction of external and internal oblique results in

Twitsting of trunk toward the internal side

22

How are internal oblique and contralateral external oblique connected?

Aponeuroses - digastric muscle

23

During rotation, rectus abdominis acts as a

Fixed post

24

Peritoneum

Serous lining of ab cavity and organs

25

Types of peritoneum and description

Parietal - lines ab wall and drapes into pelvis
Visceral - covers external surface of ab viscera

26

Functions of periotoneum

Reduce friction
Resists infection by exuding fluid and cells
Stores fat

27

Layers of abdominopevlic fascia

Transversalis fascia
Diaphragmatic fascia
Quadratus lumborum fascia
Pelvic fascia
Fascia lata

28

Blood, lymph, nerves relative to fascial lining of abdominopelvic

Blood and lymph vessels lie in the lining
Nerves lie outside

29

Abdominopelvic fascia special function

Below ASIS, it is only anterior wall strucutre posterior to rectus abdominus
Dorms inguinal ring and extends ofver spermatic cord as internal spermatic fascia

30

Arcuate line

Line at ASIS

31

Inferior to arcuate, what separates rectus abdominus from ab contents

Transversalis fascia and peritoneum

32

Transversalis fascia

Internal later of deep investing fascia of ab wall muscles
Similar to endothoracic fascia of thorax

33

What is continous with endopelvic fascia of pelivs

Transversalis fascia

34

Posterior rectus sheath below acruate line

Disappears

35

Most important arteires of ab cavity

Superior epigastric and inferior epigastric

36

Superior epigastric arises from

Internal thoracic from subclavian

37

Inferior epigastric arises from

External iliac

38

Where do inferior and superior epigastric anastomose

Imbilical region of anterior ab

39

Inguinal canal

Extends above and parallel to inguinal ligament from deep to superficial inguinal rings

40

Deep inguinal ring and location

Entrance of inguinal canal into transversalis fascia
On deep side of wall lateral to inferior epigastric artery, superior to inguinal ligament

41

Superficial inguinal ring

Exit of inguinal canal in the aponeurosis of the external ab oblique

42

Lateral crus and medial crus
Which is stronger

Lateral - also part of ligament
Borders of superficial ring

43

Intercrural fibers

Aponeurotic fibers at superior part of superficial ring that reinforce opening

44

What travles through inguinal canal to scrotum

Spermatic cord

45

Contents of spermatic cord

Testicular artery
Pampinform plexus of veins (testicular veins)
Ductus deferens (transporting sperm)
Genital branch of genitofemoral nerve
Lymphatics
Vestige of processus vaginalis

46

Gubernaculum

Guides descent of testis into scrotum

47

What part of peritoneum pulled into scortum

Processus vaginalis

48

Tunica vaginalis

Sac of peritoneum on the testes

49

External spermatic fascia continuous with

External ab oblique fascia

50

Cremaster muscle and innervation

Strands of internal oblique pulled down into spermatic cord
Reflexive retraction of testis by stimulation of genitofemoral nerve

51

Internal spermatic fascia contiuous with

Transversalis fascia

52

Tunica vaginalis

Peritoneal extension covering tests on anterior and lateral sides

53

Hydrocele

Persistent processus vaginalis
Excess fluid filled sac in scortum

54

Inguinal canal broders

Ant - aponeurosis of ext ab oblique
Posterior - transversalis fascia
Roof - internal ab oblique and trasnversus ab
Floor - inguiinal ligament

55

Fibers of transversus abdominis do NOT contribute to

Spermatic cord because it arches over inguinal ring

56

Inferior epigastric artery enters

Rectus sheath below arcuate line

57

Ductus deferens leave

deep inguinal ring and descends into pelvis

58

Testicular artery leaves

Surface of psoas major and enters deep inguinal ring with testicular veins

59

Genital br. of genitofemoral nerve enter

Ring and run with spermatic cord

60

Inguinal triangle boundaries

lat - inferior epigastric artery
Medial - lateral border of rec abodminis
Inferior - inguinal ligament

61

Where does spermatic cord emerge from ab cavity relative to inguinal trianlge?

Lateral

62

Inguinal triangle clinical significance

Area of weakness..Site for abdominla hernia to push int o anterior ab wall

63

Direct inguinal hernia

Hernia emerges medial to inferior epigastric artery and only trasnverse superficial inguinal ring

64

INdirect inguinal hernia

herniation through deep inguinal ring, inguinal canal, and superficial ring
Can go into scrotum
Emerges lateral to inferior epigastric artery

65

What is patent in indirect inguinal hernia

Processus vaginalis

66

Inguinal vs femoral hernia

Inguinal - above and medial to pubic tubercle
Femoral - below and lateral to pubic tubercle

67

Mesentery

Double layer of periotoneum neither parietal nor visceral
Continuation of both

68

Mesentary acts as

Conduit

69

Peritoneum lies deep to

Transversalis fascia

70

Greater omentum

Fat infused sheet like peritoneal fold hanging from greater curvature of stomach where transverse colon attached

71

greater omentum ligaments

Gastrocolic
Gastrosplenic
Gastrophrenic

72

Lesser omentum connects

Lesser curvature and durodenum to the liver

73

What runs in free edge of lesser omentum (lateral to medial)

Common bile duct, prtal vein, hepatic artery

74

Lesser omentum ligaments

Hepatogastric ligaments
Hepatoduodenal ligament

75

Mesenteries connecting stomach, portions of small intestine and portions of large intestine to body wall (post)

Mesogastrium, transverse mesocolon, mesentery proper, sigmoid mesocolon

76

Ligaments of peritoneum

Double layer connecting organ with another of ab wall

77

Folds of peritoneum

Reflection with often sharp border due to vessels within

78

Recess of peritoneum

Fold forming a blind pouch opening into peritoneal cavity

79

Lesser sac...how formed, what from, location

Formed by rotation of GI tract
Remnant of right half of coelemic cavity
Posterior to stomach

80

Greater sac formed from

Remainder of peritoneal cavity

81

Epiploic foramen

How lesser and greater sac communicate

82

Peritoneal folds above umbilicus

Falciform ligament contains ligamentum teres (from umbilical vein)

83

Peritoneal folds below umbilicus

Median umbilical fold (1)
Medial umbilical folds (2)
Lateral umbilical folds (2)

84

Median umbilical fold

Peritoneum covered urachus (pathway of fetal urine)

85

Medial umbilical folds

Periotneal covered obliterated umbilical artery

86

Laterla umbilical folds

Peritoneum covered inferior epigastric artery and vein

87

Layers covering tests superficial to deep

Tunica vaginalis
Parietal
Visceral

88

Covering spermatic cord superficial to deep

External spermatic fascia from external oblique
Cremaster muscle from internal oblique
INternal spermatic fascia from transversalis fascia