Quadracep muscles: vastus lateralis, vastus medialis, vastus intermedialis, sartorius Non-quads: Biceps femoris
The sotonage is the muscle that connects the leg to the upper body!
On your upper leg.
The upper part of the leg is called the thigh. It extends from the hip to the knee and contains large muscles such as the quadriceps and hamstrings.
a hamstring is the muscle on the upper-half, back of your leg.
The bones that make up the upper leg, is called the Femur
Quadriceps=4 heads Femoris= Upper leg Quadricepts femoris= 4 muscles of the upper leg.
extension
Most muscles in the body have "counterparts", one pulls and your leg curls up, the other pulls and the leg straightens. They would be on opposite sides of your leg. The "biceps" are the upper arm top muscle, and the tri-ceps (I think) is the upper arm bottom muscle. They work in conjunction to let you 'curl a barbell'' or do a chin-up.
The function of the gluteus maximus (G-max) is primarily upper leg (thigh) extension, such as moving the upper leg backward as in rising from a squat position.
Its called your femur
Kneecap is patella, upper leg bone is femur, and the term meaning pertaining to the kneecap and upper leg bone is patellofemoral.
ur hamstring and iwould get it checked out if it popped