What head does close grip bench work?
Whilst the tricep pushdown and dips will target specifically the lateral head of the tricep, the close grip bench press will target the medial and the lateral head also. So not only is the close grip bench press targeting more than one muscle simultaneously, but it is targeting more than one muscle.
What heads of the tricep do dips work?
Dips equally work the long head and lateral head of your triceps with the medial head kicking in at the top of the movement. Ensure you emphasize your triceps by keeping your body upright as you perform the exercise. Leaning forward emphasizes your chest and shoulders.