Muscles of the Thoracic and Abdominal Regions Flashcards
O: xiphoid process, ribs 10-12, costal
cartilages 5 – 9, lumbar vertebrae
I: central tendon
N: Phrenic nerve
Diaphragm
O: inferior margins of ribs 1 - 11
I: superior margins of ribs 2 - 12
N: intercostals nerves
External Intercostals
O: inferior margins of ribs 1 – 11
I: superior margins of ribs 2 – 12
N: intercostals nerves
Internal Intercostals
O: pubis
I: xiphoid process, costal cartilages 5 - 7
N: intercostals nerves 7 - 12
Rectus Abdominis
O: ribs 5- 12 (inferior 8 ribs)
I: xiphoid process, linea alba
N: intercostal nn, 8 – 12 iliohypogastric,
ilioinguinal n.
External Abdominal Oblique
O: inguinal ligament, liliac crest,
thoracolumbar fascia,
I: xiphoid process, linea alba, pubis,
inguinal ligament
N: intercostal nn, 8 – 12 iliohypogastric n,
ilioinguinal n.
Transversus Abdominis
O: clavicle, sternum, costal cartilages
1 – 6, aponeurosis of external abdominal
oblique
I: intertubercular groove of humerus
N: medial and lateral pectoral nn.
Pectoralis Major
O: vertebrae T7-L5, lower three or four
ribs, thracolumbar fascia, iliac crest,
inferior angle of scapula
I: intertubercular groove of humerus
N: thoracodorsal n.
Latissimus Dorsi
O: ribs 3 -5
I: coracoid process
N: medial and lateral pectoral nn.
Pectoralis Minor
O: ribs 1 – 8 to 9 (varies)
I: medial border of scapula
N: long thoracic n.
Serratus Anterior
O: from inferior angle to lateral border of
scapula
I: intertubercular groove of humerus
N: subscapular n.
Teres Major
