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

Quadratus Femoris

Illustration of the quadratus lumborum muscle in the posterior abdominal wall.

Quadratus Lumborum

Quadriceps Femoris

Illustration of the second layer of the plantar muscles, highlighting the quadratus plantae and lumbricals in the human foot.

Quadratus Plantae

Popular

Illustration showing the deep branch of the radial nerve piercing the supinator muscle, identified as the posterior interosseous nerve.
Encyclopaedia

Posterior Interosseous Nerve

by Dr Oliver Jones

Lateral view of the skull highlighting the path of the meningeal arteries, with emphasis on the pterion and the anterior middle meningeal artery.
Encyclopaedia

Middle Meningeal Artery

by Emily West

Bony landmarks and foramina of the posterior cranial fossa.
The Cranial Fossae

The Posterior Cranial Fossa

by Briony Adams