Biceps Femoris (Biceps= 2 heads, there are 2 heads to the biceps femoris (Long head and short head) AND lateral insertion
Semitendinosus (Inserts/attaches at the pes anserine (Anteromedial knee), when trying to identify this muscle look for the tendon that wraps around to the anterior knee) AND medial insertion
Semimembranosus (The "membranous" is most medial, larger than the semitendinosus) AND medial insertion
Quadriceps (Anterior Thigh)
Rectus Femoris (main help flexor muscle, found in the middle of the quadricep/thigh)
Sartorius (AKA tailor's muscle, allows you to cross you legs, attaches at the Pres Anserine)
Adductors (Medial Thigh) Part One:
Pectineus (Most superior adductor muscle, short and rectangle in shape)
Gracilis (In Latin, gracilis means "slender", originates/starts at the pubic bone and inserts/attaches to the Pes Anserine, looks like a straight line)