Abdominal Wall Muscles

Front 1

RECTUS ABDOMINIS LOCATION

Back 1

MEDIAL SUPERFICIAL MUSCLE PAIR-EXTENDS FROM PUBIS TO RIB CAGE- ENSHEATHED BY APONEUROSES OF THE 3 LATERAL MUSCLE PAIRS-SEGMENTED BY 3 TENDINOUS INTERSECTIONS
(MOST MEDIAL ABDOMINAL MUSCLE)

Front 2

RECTUS ABDOMINIS ATTACHMENT

Back 2

ORIGINATES FROM PUBIC CREST AND SYMPHYSIS---INSERTS ON XIPHOID PROCESS AND COSTAL CARTLIDGE OF RIBS 5-7

Front 3

RECTUS ABDOMINIS FUNCTION

Back 3

FLEXION AND ROTATION OF LUMBAR REGION OF VERTEBRAL COLUMN--FIX & DEPRESS RIBS-- STABILIZE PELVIS WHEN WALKING--INCREASE INTRA-ABDOMINAL PRESSURE

Front 4

EXTERNAL OBLIQUE LOCATION

Back 4

LARGEST & MOST SUPERFICIAL OF THE 3 LATERAL ABDOMINAL MUSCLES--RUNS DOWNWARD AND MEDIALLY--APONEUROSIS TURNS UNDER INFERIORLY, FORMING INGUINAL LIGAMENT
(UPPER FLANK MUSCLE)

Front 5

EXTERNAL OBLIQUE ATTACHMENT

Back 5

ORIGINATES FROM OUTER SURFACES OF LOWER 8 RIBS, INSERTS VIA APONEUROSIS INTO LINEA ALBA--SOME FIBERS INSERT INTO ILIAC CREST

Front 6

EXTERNAL OBLIQUE FUNCTION

Back 6

HELPS WITH FLEXION OF VERTEBRAL COLUMN AND COMPRESS ABDOMINAL CONTENTS--SEPARATELY CAN PRODUCE TRUNK ROTATION AND LATERAL FLEXION

Front 7

INTERNAL OBLIQUE LOCATION

Back 7

MOST FIBERS RUN UPWARD AND MEDIALLY, DIRECTLY BENEATH EXTERNAL OBLIQUE
(LOWER LATERAL FLANK)

Front 8

INTERNAL OBLIQUE ATTACHMENT

Back 8

ORIGINATES FROM LUMBAR FASCIA AND ILIAC CREST, INSERTS VIA APONEUROSIS INTO LINEA ALBA, SOME FIBERS INSERT INTO COSTAL CARTILAGES OF LAST 3-4 RIBS

Front 9

INTERNAL OBLIQUE FUNCTION

Back 9

HELPS WITH FLEXION OF VERTEBRAL COLUMN AND COMPRESS ABDOMINAL CONTENTS--SEPARATELY CAN PRODUCE TRUNK ROTATION AND LATERAL FLEXION

Front 10

TRANSVERSUS ABDOMINIS LOCATION

Back 10

DEEPEST MUSCLES OF THE ABDOMINAL WALL--FIBERS RUN HORIZONTALLY

Front 11

TRANSVERSUS ABDOMINIS ATTACHMENT

Back 11

ORIGINATES FROM LUMBAR FASCIA, CARTILAGES OF LAST 6 RIBS AND ILIAC CREST

Front 12

TRANSVERSUS ABDOMINIS FUNCTION

Back 12

ACTS PRIMARILY TO COMPRESS ABDOMINAL CONTENTS