the quadriceps
The leg extension exercise primarily targets the quadriceps muscle group in the front of the thigh.
your calf...
Back extension primarily works the muscles in the lower back, specifically the erector spinae muscles.
The standing lateral raise primarily works the shoulder muscles.
Hamstring - Semimembraneous
Quadriceps muscle or thigh muscle.
The upper-body muscle groups are worked when one does lat pull downs. The muscle groups mainly worked are the ones in your back called latissimus dorsi. They also work other muscle groups like traps.
The leg curl and leg extension exercises strengthens two muscle groups. The two muscle groups are the hamstring muscles and the quads or quadricep muscles.
The preacher curl exercise primarily targets the biceps muscle group.
The tricep pushdown exercise primarily targets the triceps muscle group.
The exercise "skull crushers" primarily works the triceps muscle group in the arms.
The leg curl is a muscular resistance exercise that primarily works the quadriceps. It involves the knee joint and develops strength in the quadriceps at the front of the thigh.