Muscles of the Trunk Flashcards Preview

Anatomy Lab > Muscles of the Trunk > Flashcards

Flashcards in Muscles of the Trunk Deck (14):
1

Origin, Insertion, and Action for the External abdominal oblique

Origin: Ribs 5-12
Insertion: Linea alba, iliac crest, pubis
Action: Compresses abdominal wall, laterally rotates truck

2

Origin, Insertion, and Action for the Serratus anterior

Origin: Ribs 1-8
Insertion: Vertebral border and inferior angle of scapula
Action: Abducts scapula

3

Origin, Insertion, and Action for the External intercostals

Origin: Inferior border of a rib
Insertion: Superior border of rib below
Action: Elevates ribs

4

Origin, Insertion, and Action for the Internal intercostals

Origin: Superior border of rib
Insertion: Inferior border of rib above
Action: Depresses ribs

5

Origin, Insertion, and Action for the Diaphragm

Origin: Xiphoid process, lower ribs, upper lumbar vertebrae
Insertion: Central tendon
Action: Inspiration (contraction) and expiration (relaxation)

6

Origin, Insertion, and Action for the Rhomboideus major

Origin: Spines of T2-5
Insertion: Lower one-third of vertebral border of scapula
Action: Adducts scapula

7

Name an action for the Internal abdominal oblique

Compresses abdominal wall, laterally rotates trunk

8

Name an action for the Transversus abdominins

Compresses abdominal wall, laterally rotates trunk

9

Name an action for the Rectus abdominis

Flexes vertebral column, compresses abdominal wall

10

Name an action for the Erector spinae

Extends and rotates vertebral column and head

11

Name an action for the Multifidus

Extends and rotates vertebral column

12

Name an action for the Quadratus lumborum

Extends and abducts vertebral column

13

Name an action for the Rhomboideus minor

Adducts scapula

14

Name the 3 muscles of respiration

1. Diaphragm
2. External intercostals
3. Internal intercostals