Abdomen

Question 1

Abdominal Wall Musculature Anterior

Answer 1

• External Oblique
• Internal Oblique
• Transversus Abdominis
• Rectus Abdominis
• Pyramidalis

Question 2

Abdominal Wall Musculature Posterior

Answer 2

• Psoas Major
• Psoas Minor
• Quadratus Lumborum

Question 3

Abdominal Wall Musculature Inferior

Answer 3

• Iliacus

Question 4

External Oblique Muscle Origin

Answer 4

External Surfaces of ribs 5-12

Question 5

External Oblique Muscle Insertion

Answer 5

Lateral lip of iliac crest; aponeurosis ending in linea alba

Question 6

External Oblique Muscle Innervation

Answer 6

Anterior rami of T7-T12

Question 7

External Oblique Muscle Action

Answer 7

Compresses abdominal wall;
Bilaterally - Flexes Trunk
Unilaterally - Bends trunk to same side; Rotates Trunk to opposite Side

Question 8

Internal Oblique Muscle Origin

Answer 8

Thoracolumbar fascial iliac crest between origins of external and transversus; Lateral 2/3 of inguinal ligament

Question 9

Internal Oblique Muscle Insertion

Answer 9

Inferior border of ribs 9-12

Question 10

Internal Oblique Muscle Innervation

Answer 10

Anterior rami of T2-L1

Question 11

Internal Oblique Muscle Action

Answer 11

Compresses abdominal wall;
Bilaterally: flexes trunk
Unilaterally: Bends trunk, rotates trunk to same side

Question 12

Transverse Abdominis Muscle Origin

Answer 12

Thoracolumbar fascia; medial lip of iliac crest; lateral 1/3 of inguinal ligament; costal cartilages of ribs 7-12

Question 13

Transverse Abdominis Muscle Insertion

Answer 13

Aponeurosis ending in linea alba; pubic crest and pectineal line

Question 14

Transverse Abdominis Muscle Inneration

Answer 14

Anterior rami of T7-L1

Question 15

Rectus Abdominis Muscle Origin

Answer 15

Pubic crest, pubic tubercle and pubic symphysis

Question 16

Rectus Abdominis Muscle Insertion

Answer 16

Costal Cartilages of ribs 5-7; Xiphoid process

Question 17

Rectus Abdominis Muscle Innervation

Answer 17

Anterior Rami of T6-T12

Question 18

Rectus Abdominis Muscle Action

Answer 18

Compress and tenses abdominal wall; flex vertebral column

Question 19

Pyramidalis Muscle Origin

Answer 19

Anterior pubis and pubic symphysis

Question 20

Pyramidalis Muscle Insertion

Answer 20

Into linea alba

Question 21

Pyramidalis Muscle Innervation

Answer 21

Anterior ramus of T12

Question 22

Pyramidalis Muscle Action

Answer 22

Tenses the linea alba

Question 23

Psoas Minor Muscle Origin

Answer 23

Lateral surfaces of bodies of intervertebral discs of T12-L1 Vertebrae

Question 24

Psoas Minor Muscle Insertion

Answer 24

Pectineal Line of pelvic bone

Question 25

Psoas Minor Muscle Innervation

Answer 25

Anterior Ramus of L1

Question 26

Psoas Minor Muscle Action

Answer 26

Weak flexion of lumbar vertebral column

Question 27

Psoas Major Muscle Origin

Answer 27

Lateral surfaces fo bodies and intervertebral discs of T12-L5 vertebrae; Transverse Processes of lumbar vertebrae

Question 28

Psoas Minor Muscle Insertion

Answer 28

Lesser trochanter of the femur

Question 29

Psoas Minor Muscle Innervation

Answer 29

Anterior rami of L1-L3

Question 30

Psoas Minor Muscle Action

Answer 30

Flexion of thigh at the hip joint.

Question 31

Quadratus Lumborum Muscle Origin

Answer 31

Transverse process of L5 vertebra, liolumbar ligament and iliac crest

Question 32

Quadratus Lumborum Muscle Insertion

Answer 32

transverse processes of L1-L4 Vertebrae, inferior border of rib 12

Question 33

Quadratus Lumborum Muscle Innervation

Answer 33

Anterior rami of T12-L4

Question 34

Quadratus Lumborum Muscle Action

Answer 34

Depress and stabilize rib 12; lateral bending of trunk.

Question 35

Iliacus Muscle Origin

Answer 35

Upper 2/3 of iliac fossa, anterior sacro-iliac and ilolumbar ligaments, and upper lateral surface of sacrum

Question 36

Iliacus Muscle Insertion

Answer 36

lesser trochanter of the femur

Question 37

Iliacus Muscle innervation

Answer 37

femoral nerve L2-L4

Question 38

Iliacus Muscle Action

Answer 38

Flexion at hip joint