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External Oblique Muscle

image descriptionExternal Oblique Muscle

External oblique muscle with labels: Deltoid, latissimus dorsi, external oblique, biceps brachii, abdominal aponeurosis, pectoralis major, serratus anterior
External oblique muscle with labels: Pectoralis minor, latissimus dorsi, external oblique, biceps brachii, rectus abdominis, serratus anterior, Linea alba
External oblique muscle with labels: External intercostals, internal intercostals, serratus anterior, external oblique, linea alba, rectus abdominis
External oblique muscle with labels: external oblique, linea alba, internal oblique, abdominal aponeurosis
External oblique muscle with labels: external oblique, linea alba, internal oblique, transversus abdominis, abdominal aponeurosis
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image descriptionAttachments of External Oblique Muscle: Origin & Insertion

Origin: (proximal attachments)
a. External surfaces of ribs 5-12.

Insertion: (distal attachments)
a. Anterior iliac crest and abdominal aponeurosis to linea alba.

External Oblique highlighted and labeled
External Oblique with labels: Insertion and Origin
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Wish there was an easier way to learn? There is! Learn the anatomy of the external oblique muscle in half the time with this trunk wall muscle anatomy reference chart.

Actions of the abdomen:

image descriptiona. Flexes vertebral column (draws thorax downward).

image descriptiona. Rotates vertebral column (torso).

image descriptiona. Laterally flexes vertebral column (compresses abdomen).

Innervation of External Oblique Muscle:

  • 8-12 intercostal, iliohyogastric, and ilioinguinal nerves.

An Overview of the External Oblique Muscle

Test yourself on external oblique muscle with answers hidden
Test yourself on external oblique muscle with answers shown:Deltoid, pectoralis major, latissimis dorsi, serratus anterior, biceps brachii, external oblique, linea alba, rectus abdominis, abdominal aponeurosis
Test yourself on external oblique muscle with answers shown:Pectoralis major, latissimis dorsi, serratus anterior, biceps brachii, external oblique, linea alba, rectus abdominis, abdominal aponeurosis
Test yourself on external oblique muscle with answers shown:Pectoralis minor, latissimis dorsi, serratus anterior, biceps brachii, external oblique, linea alba, rectus abdominis, abdominal aponeurosis
Test yourself on external oblique muscle with answers shown: :External intercostals, internal intercostals, serratus anterior, external oblique, linea alba, rectus abdominis, abdominal aponeurosis
Test yourself on external oblique muscle with answers shown:External intercostals, internal intercostals, external oblique, linea alba, rectus abdominis, abdominal aponeurosis
Test yourself on external oblique muscle with answers shown: Internal intercostals, external oblique, linea alba, rectus abdominis, abdominal aponeurosis
Test yourself on external oblique muscle with answers shown: external oblique, linea alba, rectus abdominis, abdominal aponeurosis
Test yourself on external oblique muscle with answers shown: external oblique, linea alba, abdominal aponeurosis
Test yourself on external oblique muscle with answers shown: external oblique, linea alba, internal oblique, abdominal aponeurosis
External Oblique with labels: Insertion and Origin
Test yourself while observing the external oblique muscle anatomy
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