Week 5 (Trunk)

Question 1

Quadratus Lumborum Origin

Answer 1

Posterior Iliac Crest

Question 2

Quadratus Lumborum Insertion

Answer 2

Last Rib and TP of L1-L4

Question 3

Quadratus Lumborum Actions (4)

Answer 3

Unilaterally:
-Laterally Tilt (elevate) pelvis
-Laterally flex vertebral column same side
-Assist to extend vertebral column

Bilaterally:
-Fix the last rib during forced inhalation

Question 4

Rectus Abdominis Origin

Answer 4

Pubic crest and Pubic Symphysis

Question 5

Rectus Abdominis Insertion

Answer 5

Cartilage of Ribs 5, 6, & 7 + Xiphoid Process

Question 6

Rectus Abdominis Actions (2)

Answer 6

-Flex Vertebral Column
-Tilt Pelvis Posteriorly

Question 7

Transverse Abdominis Origin

Answer 7

Lateral inguinal ligament, Anterior Iliac Crest, Thoracolumbar aponeurosis, and internal surfaces of lower 6 ribs

Question 8

Transverse Abdominis Insertion

Answer 8

Abdominal aponeurosis to linea alba.

Question 9

Transverse Abdominis Actions (1)

Answer 9

Compress abdominal contents

Question 10

External Obliques Origins (1)

Answer 10

External Surfaces of Ribs 5-12

Question 11

External Obliques Insertions (2)

Answer 11

Anterior part of iliac crest, abdominal aponeurosis to linea alba.

Question 12

External Obliques Actions (4)

Answer 12

Unilaterally:
-Flex vertebral column same side
-Rotate V.C. opposite side

Bilaterally:
-Flex vertebral column
-Compress abdominal contents

Question 13

Internal Oblique Origin

Answer 13

Lateral inguinal ligament, iliac crest, thoracolumbar aponeurosis

Question 14

Internal Obliques Insertion (2)

Answer 14

Internal surface of lower 3 ribs, abdominal aponeurosis to linea alba.

Question 15

Internal Oblique Actions (4)

Answer 15

Unilaterally:
-Laterally Flex Vertebral Column Same Side
-Rotate V.C. Same Side

Bilaterally:
-Flex V.C.
-Compress abdominal contents

Question 16

Diaphragm Origin (3)

Answer 16

Costal: Inner surfaces of lower 6 ribs
Lumbar: Upper 2 or 3 lumbar vertebrae
Sternal: Inner part of xiphoid process

Question 17

Diaphragm Insertion

Answer 17

Central Tendon

Question 18

Diaphragm Actions

Answer 18

-Draw down the central tendon of the diaphragm
-Increase the volume of the thoracic cavity during inhalation

Question 19

Erector Spinae Groups (3)

Answer 19

Spinalis
Longissimus
Iliocostalis

Question 20

Erector Spinae Group Actions (2)

Answer 20

Unilaterally:
-Laterally flex the vertebral column, same side

Bilaterally:
-Extend the vertebral column

Question 21

Spinalis Origins

Answer 21

Ligamentum nuchae, SPs of most vertebrae

Question 22

Spinalis Insertions

Answer 22

Other SPs in cervical and thoracic spine

Question 23

Longissimus Origins

Answer 23

Common tendon blending to thoracolumbar aponeurosis + TPS of upper thoracic

Question 24

Longissimus Insertions

Answer 24

Lower 9 ribs, TPs of thoracic and cervical vertebrae, mastoid process

Question 25

Iliocostalis Origin

Answer 25

Common Tendon + posterior surface of ribs 1-12

Question 26

Iliocostalis Insertions

Answer 26

TPs of lumbar + Cervical, and posterior surfaces of ribs

Question 27

External Intercostals Actions

Answer 27

Draw the ribs superiorly (increase the space of the thoracic cavity) to assist with INHALATION

Question 28

Internal Intercostals

Answer 28

Draw the ribs inferiorly (decreasing the space of the thoracic cavity) to assist with EXHALATION

Question 29

Intercostals Origins

Answer 29

Inferior border of the rib above

Question 30

Intercostals Insertion

Answer 30

Superior border of the rib below