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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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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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