Trunk Muscles

Question 1

Axilla

Answer 1

Armpit

Question 2

What does the pectoral is major look like

Answer 2

Large and fan shaped

Question 3

Location of intercostal muscles

Answer 3

Deep muscles between Ribs

Question 4

Raises rib cage when inhaling normally

Answer 4

External intercostal muscles

Question 5

Depresses rib cage when exhaling forcibly

Answer 5

Internal intercostal muscles

Question 6

Origin and insertion of the rectus abdominis

Answer 6

The origin is the pubis and the insertion is the sternum and ribs five through seven

Question 7

Flexes vertebral column

Answer 7

Rectus abdominis

Question 8

Compresses abdominal contents during defecation and childbirth and are involved in forced breathing

Answer 8

Reclusive abdominus

Question 9

What encloses the rectus abdominis

Answer 9

Aponeurosis

Question 10

Location of external oblique

Answer 10

Origin is last 8 ribs and insertion is iliac crest of the ileum

Question 11

Flexes the vertebral column and rotates the trunk and Bends It laterally

Answer 11

External oblique and internal oblique

Question 12

Special function of external oblique

Answer 12

Forms lateral wall of abdomen

Question 13

Location of internal oblique

Answer 13

Origin is iliac crest insertion is last three ribs

Question 14

Source of lower back pain

Answer 14

Erector spinae

Question 15

Forms anterior wall of Axilla

Answer 15

Pectoralis major

Question 16

The fibers of the internal oblique run what to the external obliques

Answer 16

At right angles

Question 17

Compresses abdominal contents

Answer 17

Transversus abdominis

Question 18

Which way do the fibers of the transversus abdominis run

Answer 18

Horizontally

Question 19

When both quadratus lumborum work together what occurs

Answer 19

Extension of the lumbar spine

Question 20

Location of pectoralis major

Answer 20

Covers upper part of trunk
O: sternum, shoulder girdle, and first 6 ribs
I: proximal end of humerus

Question 21

Location and origins and insertion of quadratic lumborum

Answer 21

Part of posterior abdominal wall the origin is the iliac crest in the insertion is the upper lumbar vertebrae specifically the transverse processes

Question 23

Location, origin, and insertion of the latissimus Dorsi

Answer 23

Origin is the lower spine and ilium

Insertion is the proximal end of the humerus

Question 24

Extends and adducts humerus

Answer 24

Latissimus Dorsi

Question 25

Very important in a power stroke such as swimming

Answer 25

Latissimus Dorsi

Question 26

Origin and insertion of deltoid

Answer 26

The origin is the scapular spine or clavicle and insertion is the proximal end of the humorous specifically the deltoid tuberosity

Question 27

What does the latissimus Dorsi look like

Answer 27

2 large flat muscles

Question 28

Where do you injectsmall amounts of medicine if needed into the muscles

Answer 28

Deltoid

Question 29

Three origins and insertions of the erector spinae and location

Answer 29

O: iliac crest ribs three to twelve and vertebrae
I: ribs and thoracic and cervical vertebrae
Covers entire length of vertebral column

Question 30

Prime mover of back extension

Answer 30

Erector spinae

Question 31

Provides resistance that helps contract bending at waist

Answer 31

Erector spinae

Question 32

Origin and insertion of transversus abdominis

Answer 32

The origin is the lower ribs and iliac crest and the insertion is the pubis

Question 32

Each muscle of pair flexes the spine laterally

Answer 32

Quadratus lumborum

Question 33

Prime mover of arm abduction

Answer 33

Deltoid