Muscles

Question 1

Pectoralis major origin

Answer 1

Medial half of the clavicle, the sternum and the costal cartilages of ribs 1 to 6.

Question 2

Pectoralis major insertion

Answer 2

Crest of the greater tubercle of the humerus.

Question 3

Pectoralis major actions, all fibers

Answer 3

Adduct and medially rotate the shoulder at the glenohumeral joint. Assist to elevate the thorax during forced breathing.

Question 4

Pectoralis major actions, upper fibers

Answer 4

Flex and horizontally adduct the shoulder at the glenohumeral joint.

Question 5

Pectoralis major actions, lower fibers

Answer 5

Extend the shoulder to neutral.

Question 6

Pectoralis major innervation

Answer 6

Upper fibers is the lateral pectoral nerve. The lower fibers is the lateral and medial pectoral nerves.

Question 7

Quadratus lumborum origin

Answer 7

Posterior iliac crest

Question 8

Quadratus lumborum insertion

Answer 8

12th rib and the transverse processes of lumbar vertebrae 1-4

Question 9

Quadratus lumborum actions, unilateral

Answer 9

Laterally tilt the pelvis (lumbosacral joint) and laterally flex the vertebral column to the same side (spinal joints).

Question 10

Quadratus lumborum actions, bilateral

Answer 10

Fix the last rib during forced inhalation and exhalation and assists to extend the vertebral column.

Question 11

Quadratus lumborum innervation

Answer 11

Lumbar plexus

Question 12

External intercostal origin

Answer 12

Inferior border of the rib above.

Question 13

External intercostal insertion

Answer 13

Superior border of the rib below

Question 14

External intercostal actions

Answer 14

Draw the ribs superiorly to assist with inhalation.

Question 15

External intercostal innervation

Answer 15

Thoracic nerves

Question 16

Internal intercostal origin

Answer 16

Inferior border of the rib above.

Question 17

Internal intercostal insertion

Answer 17

Superior border of the rib below.

Question 18

Internal intercostal action

Answer 18

Draws the ribs inferiorly to assist with exhalation.

Question 19

Internal intercostal innervation

Answer 19

Thoracic nerves.

Question 20

Rectus abdominis origin

Answer 20

Pubic crest and the pubic symphysis

Question 21

Rectus abdominis insertion

Answer 21

Cartilages of ribes 5-7 and the xiphoid process.

Question 22

Rectus abdominis actions

Answer 22

Flexes the vertebral column at the spinal joints and posteriorly tilts the pelvis at the lumbosacral joints.

Question 23

Rectus abdominis innervation

Answer 23

Ventral rami of T5-T12.

Question 24

External abdominal oblique origin

Answer 24

External surfaces of ribs 5-12.

Question 25

External abdominal oblique insertion

Answer 25

Anterior part of the iliac crest, the rectus sheath and the linea alba.

Question 26

External abdominal oblique actions, unilateral

Answer 26

Laterally flexes the vertebral column to the same side and rotates the vertebral column to the opposite side, spinal joints.

Question 27

External abdominal oblique actions, bilateral

Answer 27

Flex the vertebral column and compress the abdominal contents.

Question 28

External abdominal oblique innervation

Answer 28

T5-T12

Question 29

Common names for the external abdominal oblique

Answer 29

Coat pocket muscles, SCM of the torso.

Question 30

Internal abdominal oblique origin

Answer 30

Lateral inguinal ligament, iliac crest and the thoracolumbar fascia.

Question 31

Internal abdominal oblique insertion

Answer 31

Internal surface of the lower 3 ribs, the rectus sheath to the linea alba.

Question 32

Internal abodminal oblique actions, unilateral

Answer 32

Lateral flexion of the vertebral column and rotation of the vertebral column to the same side.

Question 33

Internal abdominal oblique actions, bilateral

Answer 33

Flex the vertebral column and compress the abdominal contents.

Question 34

Internal abdominal oblique innervation

Answer 34

Ventral rami of T7-T12, iliohypogastric and ilioinguinal nerves.

Question 35

Diaphragm origin

Answer 35

Costal - inner surface of the lower 6 ribs. Lumbar - upper 2 or 3 lumbar vertebrae. Sternal - Inner part of the xiphoid process.

Question 36

Diaphragm insertion

Answer 36

Central tendon.

Question 37

Diaphragm actions

Answer 37

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

Question 38

Diaphragm innervation

Answer 38

Phrenic nerve (C3, 4, 5)

Question 39

Psoas major origin

Answer 39

Bodies and transverse processes of the lumbar vertebrae.

Question 40

Psoas major insertion

Answer 40

Lesser trochanter of the femur.

Question 41

Psoas major actions, bilateral with origin fixed

Answer 41

Flex the hip and may laterally flex the hip at the coxal joint.

Question 42

Psoas major actions, bilateral with insertion fixed

Answer 42

Flex the trunk towards the thigh and anteriorly tilt the pelvis at the lumbosacral joint.

Question 43

Psoas major unilateral actions

Answer 43

Laterally flex the lumbar spine.

Question 44

Psoas major innervation

Answer 44

Branches of the lumbar plexus from L1 to L4.

Question 45

Iliacus origin

Answer 45

Iliac fossa.

Question 46

Iliacus insertion

Answer 46

Lesser trochanter of the femur.

Question 47

Iliacus action with origin fixed

Answer 47

Flex the hip and may laterally rotate the hip.

Question 48

Iliacus action with insertion fixed

Answer 48

Flex the trunk towards the thigh and tilits the pelvis anteriorly.

Question 49

Iliacus innervation

Answer 49

Femoral nerve (L1-L4)

Question 50

Pectoralis major palpation key

Answer 50

Seated, resist horizontal flexion and adduction.

Question 51

Quadratus lumborum palpation key

Answer 51

Supine - superman or hip hike.

Question 52

Intercostals palpation key

Answer 52

Place fingers between ribs, have client take slow, deep breaths.

Question 53

Rectus abdominis palpation key

Answer 53

Client supine - crunch

Question 54

External obliques palpation key

Answer 54

Have client contralaterally rotate the trunk

Question 55

Internal obliques palpation key

Answer 55

Have client ipsilaterally rotate the trunk

Question 56

Diaphragm palpation key

Answer 56

On left side of client, curl fingers around the bottom of the ribs as they exhale.

Question 57

Iliacus palapation key

Answer 57

Curl fingers around the ilium as the client exhales.

Question 58

Psoas major palpation key

Answer 58

Rotate fingers clockwise and sink in half-way between umbilicus and ASIS, have client lift leg.