vastus

[ vas-tuh s ]

/ ˈvæs təs /

any of several muscles in the front part of the thigh constituting part of the quadriceps muscle, the action of which assists in extending the leg.

Origin of vastus

< Latin: vast

vassar, vast, vasthi, vastitude, vastity, vastus, vasty, vat, vat dye, vat., vater

In the dog and the cat the vastus externus is the most voluminous of the three portions which constitute the triceps muscle.

Artistic Anatomy of Animals |douard Cuyer
Ossification in the crureus or vastus lateralis muscle has been frequently observed as a result of a kick from a horse.

Manual of Surgery |Alexis Thomson and Alexander Miles
Vastus animus immoderata, incredibilia, nimis alta semper cupiebat.

De Bello Catilinario et Jugurthino |Caius Sallustii Crispi (Sallustius)
It covers the rectus and vastus externus portions of the triceps cruris; it is also in relation with the gluteal muscles.

Artistic Anatomy of Animals |douard Cuyer

The two fasciculi then pass towards the knee, being in relation with the rectus and the vastus internus of the triceps.

Artistic Anatomy of Animals |douard Cuyer