the quadriceps
your calf...
The standing lateral raise primarily works the shoulder muscles.
Hamstring - Semimembraneous
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.
Quadriceps muscle or thigh muscle.
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 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.
It isn't. The triceps brachii muscle (which is actually a group of three muscles) is the strongest set of muscles in the arm and accounts for nearly 60% of the upper arm's muscle mass. The triceps are primarily responsible for the extension of the elbow joint (straitening of the arm).
Primarily the lower chest muscles
The standing lateral raise primarily works the shoulders.
Shoulder extension is controlled by: Long head of the triceps, the last, and the teres major
the abdominal muscles