Trunk and Hip Muscles

Question 1

What is the P of the Intercostals?

Answer 1

Singing or playing the trumpet (deep breathing)

Question 2

What is the MA of the Intercostals?

Answer 2

External Intercostals: draws the ribs superiorly to assist with inhalation (increasing the space of the thoracic cavity)

Internal Intercostals: draw the ribs inferiorly to assist with exhalation (decreasing the space of the thoracic cavity)

Question 3

What is the O of the Intercostals?

Answer 3

Inferior border of the rib above

Question 4

What is the I of the Intercostals?

Answer 4

Superior border of the rib below

Question 5

What is the N for the Intercostals?

Answer 5

Thoracic intercostal nerves (T1-T11)

Question 6

What is the P of the Diaphragm?

Answer 6

Singing or playing the trumpet (deep breathing)

Question 7

What is the MA of the Diaphragm?

Answer 7

Draw down the central tendon of the diaphragm and increase the volume of the thoracic cavity during inhalation

Question 8

What is the O of the Diaphragm?

Answer 8

Costal Attachment: inner surface of lower 6 ribs (7-12)

Lumbar Attachment: upper 2 or 3 lumbar vertebrae (L1-L2 or L1-L3)

Sternal Attachment: inner part of xiphoid process

Question 9

What is the I of the Diaphragm?

Answer 9

Central tendon

Question 10

What is the N for the Diaphragm?

Answer 10

Phrenic nerve (C3, C4, and C5)

C3, 4, 5 keep you alive

Question 11

What is the P of the Quadratus Lumborum?

Answer 11

Lifting or walking

Question 12

What is the MA of the Quadratus Lumborum?

Answer 12

Bilateral: fixes the last rib during forced inspiration

Unilateral: lateral tilt/hike/elevate the pelvis, lateral flexion of the vertebral column to the ipsilateral side, and extension of the vertebral column

Question 13

What is the SA of the Quadratus Lumborum?

Answer 13

12th rib and tips of lumbar TP

Question 14

What is the IA of the Quadratus Lumborum?

Answer 14

Iliolumbar ligament and iliac crest

Question 15

What is the N for the Quadratus Lumborum?

Answer 15

Ventral branches of T12-L4

Question 16

What is the P of the Psoas Major?

Answer 16

Hiking or ascending stairs

Question 17

What is the MA of the Psoas Major?

Answer 17

Acting inferiorly with iliacus: flexion of the hip

Acting superiorly: lateral flexion of the vertebral column to the ipsilateral side and balances the trunk

When sitting, acts inferiorly with the iliacus to flex the trunk

Question 18

What is the SA of the Psoas Major?

Answer 18

TP of T12-L5, sides of lumbar vertebral bodies and discs between them

Question 19

What is the IA of the Psoas Major?

Answer 19

Lesser trochanter

Question 20

What is the N for the Psoas Major?

Answer 20

Ventral rami of L1-L3

Question 21

What is the P of the Iliacus?

Answer 21

Climbing a ladder or cycling

Question 22

What is the MA of the Psoas Major?

Answer 22

Flexion of the thigh and stabilization of the hip joint

Acts with Psoas Major

Question 23

What is the SA of the Psoas Major?

Answer 23

Iliac fossa, sacrum, and anterior sacroiliac ligaments

Question 24

What is the IA of the Psoas Major?

Answer 24

Lesser trochanter and psoas tendoon

Question 25

What is the N for the Psoas Major?

Answer 25

Femoral nerve (L2-L4)

(this is a peripheral nerve)