Superficial fascia and fascia lata

The pectineus - named from pecten (=pubes) on account of its origin from the bone - is a quadrilateral sheet.

The psoas, or psoas magnus (french: muscle psoas ou grand psoas) - named from the Greek word meaning the muscles of the loins - is thick, rounded, and fusiform.

The sartorius- named somewhat erroneously from sartor, a tailor, because it has been supposed to be the muscle by which the cross-legged sitting posture is produced- is a long, ribbon- shaped muscle slightly fusiform at the two ends.

The psoas parvus - a small muscle, only occasionally present, named from its positic in the loins and its small size - is fusiform and somewhat flattened.

The iliacus - named from its attachment to the ihum - is a thick, triangula sheet.

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