Muscles on the upper legs are a little more complicated than I anticipated. Certainly need to copy a few more images to get more familiarized. Plus the thigh muscles are quite important for figure drawing and painting.
The important names are (repetition means they cover multiple sides):
On the lateral side/ outside of the thigh are addctor longus, adductor magnus, vastus lateralis, iliotibial band, tensor fasciae latae, glutaeus medius, glutaeus maximus; on the anterior side/front are rectus femoris, vastus lateralis, vastus medialis, sartorius, glutaeus medius, tensor fasciae latae; on the posterior side/back of the thigh are biceps femoris, semitendinosus, glutaeus medius, glutaeus maximus, a little of the iliotibial band; on the medial side/inside of the thigh are gracilis, semimembranosus.
Did not take pictures of all my practice drawings, will add them later this week.
Below is the drawings from class. We first block in the contour line of the body of the life model, then add bones and muscles with help from observation of bony landmarks.
Plus some older ones of other muscles, seems to have forgotten/misplaced them.