Trunk Muscles

Question 1

Psoas major proximal attatchments

Answer 1

Sides of T12-L5 vertebrae and discs between them
TP L1-L5

Question 2

Psoas major distal attatchments

Answer 2

Lesser trochanter of femur

Question 3

Psoas major distal attatchments

Answer 3

Lesser trochanter of femur

Question 4

Psoas major innervation

Answer 4

Anterior rami L1,L2,L3

Question 5

Psoas major MA

Answer 5

With the origin fixed
Hip flexion
Hip lateral rotation( ER)

With the insertion fixed
Trunk flexion toward the thigh
Pelvic anterior tilt

Psoas major only
Stabilizes Hip joint when standing

Question 6

Illiacus proximal attatchments

Answer 6

Illiac fossa
Sacrum
Anterior sacroilliac ligaments

Question 7

Illiacus distal attatchments

Answer 7

Lesser trochanter of the femur
Psoas tendon

Question 8

Illiacus nerve innervation

Answer 8

Femoral nerve
L2,L3,L4

Question 9

Quadratis lumborum proximal attatchments

Answer 9

12th ribs and tips of lumbar transverse processes

Question 10

Quadratus lumborum distal attatchments

Answer 10

Illiolumbar ligament and illiac crest

Question 11

Quadratus lumborum innervation

Answer 11

Ventral branches of T12,L1 to L4

Question 12

Quadratus Lumborum muscular action

Answer 12

Unilaterally
Laterally tilt/hike/elevate the pelvis

Laterally flex the vertebral column to the same side

Extend the vertebral column

Bilaterally
Fix the last rib during forced inspiration

Question 13

Diaphragm origin

Answer 13

Costal attatchments
Inner surface of lower six ribs

Lumbar attatchments
Upper 2 or 3 lumbar vertebrae

Sternal attatchments
Inner part of xiphoid process

Question 14

Diaphragm insertion

Answer 14

Central tendon

Question 15

Diaphragm innervation

Answer 15

Phrenic nerve
C3-C5

Question 16

Rectus abdominis muscular action

Answer 16

Flex the vertebral column
Compresses abdominal viscera
Tilt pelvis posteriorly

Question 17

Rectus abdominis innervation

Answer 17

Thoraco abdominal nerve
(anterior rami of T6-T12)

Question 18

External oblique innervation

Answer 18

Thoraco abdominal nerves
T7 to T11 and subcostal

Question 19

Internal oblique innervation

Answer 19

Thoraco abdominal nerve
T6-T12 Nad first lumbar nerve

Question 20

Transverse abdominis innervation

Answer 20

Thoraco abdominal nerves T6-T12
spinal and first lumbar nerve

Question 21

Transverse abdominis muscular action

Answer 21

Compresses and support abdominal viscera
Antagonist of diaphragm with expiration

Question 22

What muscles of the pelvic floor make up the superficial layer

Answer 22

Ischiocavernosus
Bulbospongiosus
Superficial transverse perineal
External anal sphincter

Question 23

What muscles make up the intermediate layer of the pelvic floor ?

Answer 23

External urethral sphincter
Deep transverse perineal
Compressor urethrae (Female)
Sphincter urethrovaginalis(female)

Question 24

What muscles make up the deep pelvic floor?

Answer 24

Levator Ani
Coccygeus
Obturator internus
Piriformis

Question 25

What are the three muscles that make up the levator Ani

Answer 25

Puborectalis, pubococcygeus, ilecoccygeous