Gross Anatomy - Abdominal Walls And Inguinal Canal

Front 1

how many muscles per side of body in abdomen?

Back 1

3 laterally and 1 anterioly adjacent to midline

Front 2

fascia and deep fascia of abdominal wall

Back 2

superficial:
fatty layer
membranous (Scarpa's) layer (almost a superficial deep fascia. ONLY INFERIOR TO UMBILICUS)

deep fascia: typical layer of dense connective tissue below membranous layer, above anterolateral abdominal wall

Front 3

aponeurosis

Back 3

tendon of 3 lateral muscles of abdominal wall

Front 4

endoabdominal fascia

Back 4

continuous layer of fascia that lines deep surface of abdominal walls underside diaphragm

inferior diaphragmatic fascia
psoas fascia

Front 5

muscles of anterolateral abdominal wall

Back 5

external oblique: most superficial, forms inguinal ligament

internal oblique: intermediate layer

transverse abdominal: deepest muscle

rectus abdominis: anterior muscle adjacent to midline

Front 6

linea alba

Back 6

fusion of aponeurosis of lateral muscles

Front 7

rectus sheath

Back 7

encloses rectus abdominis on both anterior/posterior sides. deficient posteriorly

has tendinous intersections in abdominis muscle

linea semilunaris: lateral margin of the rectus abdominis muscle and rectus sheath

Front 8

function of anterolateral abdominal wall

Back 8

protect underlying viscera of abdominal cavity

maintain position of viscera

change pressure within abd cavity

change pressure in thoracic cavity

indirectly move the vertebral column

Front 9

muscular innervation of abd wall

Back 9

anterior rami of T7-T11

subcostal nerve

iliohypogastric and ilioinguinal nerves of lumbar plexus, derived from anterior ramus of L1

Front 10

cutaneous innervation of anterolateral abdominal wall

Back 10

segmental: dermotomes

T7: xiphoid process

T10: umbilicus

L1: pubis of hip bone

Front 11

blood supply to abd wall

Back 11

variety of vessels

1. lumbar arterires from AA

2. superior epigastric, inferior epigastric

Front 12

superior epigastric

Back 12

internal thoracic artery of throax

Front 13

inferior epigastric

Back 13

external iliac artery branch in lower abdomen

Front 14

iguinal region

Back 14

junction of abd wall and anterior thigh

Front 15

inguinal canal

Back 15

connects abd cavity with perineal region

Front 16

inguinal canal transmits

Back 16

spermatic cord in males

round ligament of uterus in females

Front 17

procesuss vaginalis

Back 17

outpocketing of peritnoneus

Front 18

floor of inguinal canal

Back 18

curve of aponeurosis of external oblique muscle (inguinal canal)

Front 19

anterior wall of inguinal canal

Back 19

aponeurosis of external oblique

Front 20

posterior wall of inguinal canal

Back 20

transversalis fascia of endoabdomial fascia

Front 21

roof of inguinal canal

Back 21

muscle fibers of internal oblique, transverse abdominal muscle

Front 22

opening of inguinal canal

Back 22

pushed ahead the abdominal wall and dragged various layers with it

Front 23

deep inguinal ring

Back 23

site where processus vaginalis pushes intro trransversalis fascia

Front 24

superficial inguinal ring

Back 24

site where processus vaginalis pushes aponeurosis of external oblique

Front 25

support for inguinal canal

Back 25

canal is a defect in anterior abdominal wall.

can cause herniation

Front 26

inguinal triangle

Back 26

inferior epigastric blood vessels

lateral border of rectus abdominis

inguinal ligament