Abdomen

Question 1

External Oblique origin

Answer 1

External surfaces of 5th-12th ribs

Question 2

External Oblique insertion

Answer 2

Linea Alba, pubic tubercle and anterior half of iliac crest

Question 3

External Oblique innervation

Answer 3

Thoraco-abdominal and subcostal nerves (anteiror rami of T7-T12 Spinal Nerves)

Question 4

External Oblique action

Answer 4

Compress and support abdominal viscera, flex and rotate trunk

Question 5

Internal Oblique origin

Answer 5

Thoracolumbar fascia, anterior two third of illiac crest, and connective tissue deep to linguinal ligamen

Question 6

Internal Oblique insertion

Answer 6

internal borders off 10th-12th ribs, linea alba, and pubis via conjoint tendon

Question 7

Internal Oblique innervation

Answer 7

Thoraco-abdominal nerves (anteiror rami of T7-T11 Spinal Nerves) subcostal and first lumbar nerve

Question 8

Internal Oblique action

Answer 8

Compress and support abdominal viscera, flex and rotate trunk

Question 9

Transveres Abdomninus origin

Answer 9

internal surfaces of 7th-12th costal cartilages, thoracolumbar fascia, iliac crest, and connective tissue deep to linguinal ligament

Question 10

Transveres Abdomninus insertion

Answer 10

Linea alba with aporneurosis of internal oblique, pubic crest, and pubis via conjoint tendon

Question 11

Transveres Abdomninus innervation

Answer 11

Thoraco-abdominal nerves (anteiror rami of T7-T11 Spinal Nerves) subcostal and first lumbar nerve

Question 12

Transveres Abdomninus action

Answer 12

compressess and supports abdominal viscera

Question 13

Rectus Abdominus origin

Answer 13

pubic symphasis and pubic crest

Question 14

Rectus Abdominus insertion

Answer 14

xiphiod process and 5th-7th costal cartilages

Question 15

Rectus Abdominus innervation

Answer 15

Thoraco-abdominal and subcostal nerves (anteiror rami of T7-T12 Spinal Nerves)

Question 16

Rectus Abdominus action

Answer 16

flexes trunk (lumbar vertebrae) and compressess abdominal viscera; stabalizes and controls tilt of pelvis (antilordosis)

Question 17

Iliacus origin

Answer 17

supeiror 2/3 of iliac fossa, ala of sacrum, and anteior sacroiliac ligaments

Question 18

Iliacus insertion

Answer 18

tendon of psoas major, lesser trochanter of femur, and shaft of femur distal (inferior) to it

Question 19

Iliacus innervation

Answer 19

femoral nerve (L2-L4)

Question 20

Iliacus action

Answer 20

femoral nerve (L2-L4)

Question 21

Psoas Major origin

Answer 21

sides of T12-S1 vertebrae and intervening IV discs between them; transverse processes of all lumbar vertebrae

Question 22

Psoas Major insertion

Answer 22

by strong tendon to lesser trochanter of femur

Question 23

Psoas Major innervation

Answer 23

lumbar plexus vis anterior branches of nerves (L2-L4)

Question 24

Psoas Major action

Answer 24

acting inferiorly with iliacus, flexes thigh; acting superiorly, flexes vertebral column laterally to balance the trunk; when sitting, acts inferiorly with iliacus to flex trunk

Question 25

Quadratus Lumborum origin

Answer 25

medial half of inferior border of 12th rib and tips of lumbar transverse processes

Question 26

Quadratus Lumborum insertion

Answer 26

iliolumbar ligament and internal lip of iliac crest

Question 27

Quadratus Lumborum innervation

Answer 27

anterior branches of T12 and L1-L4 nerves

Question 28

Quadratus Lumborum action

Answer 28

extends and laterally flexes verteral column; fixes 12th rib during inspiration