O

Illustration of the left occipital muscles located beneath the deep muscles of the back.

Obliquus Capitis Inferior

Illustration of the left occipital muscles located beneath the deep muscles of the back.

Obliquus Capitis Superior

Illustration of the obturator canal, showing the obturator membrane within the obturator foramen of the pelvis.

Obturator Artery

Illustration of the muscles of the medial thigh with anterior compartment muscles removed, highlighting the adductor group.

Obturator Externus

Illustration depicting the deep muscles of the gluteal region, including the quadratus femoris, obturator internus, piriformis, and gemelli muscles.

Obturator Internus

Diagram illustrating the course of the occipital artery arising from the external carotid artery in the neck.

Occipital Artery

Occipital Vein

Omohyoid

Illustration of the superficial and deep layers of the hypothenar muscles in the hand.

Opponens Digiti Minimi

Palmar view of the labeled thenar muscles of the thumb, including the abductor pollicis brevis, opponens pollicis, and flexor pollicis brevis, along with the recurrent branch of the median nerve.

Opponens Pollicis

Illustration of the two orbital muscles of facial expression: Orbicularis Oculi and Corrugator Supercilii.

Orbicularis Oculi

Lateral view diagram of the oral muscles of facial expression, highlighting the blending of buccinator and orbicularis oris fibers.

Orbicularis Oris

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