The Vastus Externus is plac'd on the outside of the Thigh, springing from the top and the fore-part of the Femur, being united by the same Tendon with the two preceeding.
The Crureus proceeds from the top, and the fore-part of the Thigh-Bone, between the two Trochanters; then covering the whole Bone, it is also fasten'd to the Leg-Bone with the three preceeding Muscles, after having cover'd the Knee-Pan with their common
Tendon, which serves likewise as a Ligament to the Knee.
The two Adductors of the Leg are the Sartorius and the Gracilis.
The Sartorius or the Longissimus draws the leg inward, deriving its Original from the upper Spine of the Ischion; from whence it descends obliquely thro' the inside of the Thigh, and cleaves to the top on the inside of the Tibia.
The Gracilis hath its Origine in the fore-part at the bottom of the Os Pubis, and its Insertion in the top of the Tibia on the inside.
The two Abductors of the Leg are the Fascia lata, and the Poplitæus.
The Fascia lata, or the Membranosus, is as it were a kind of large Band, which covers all the Muscles of the Thigh. It proceeds from the outward Lip of the Os Ilion, is ty'd by a large Membrane to the top of the Perone or Fibula and sometimes descends to the end of the Foot.
The Poplitæus, or Sub-poplitæus, arises from the lower and external Condylus of the Thigh-Bone, passeth obliquely from the outside to the inside, till it is lost in the upper and inner part of the Leg-Bone under the Ham.
What are the Motions of the Foot, and what are its Muscles?