Match the following components with their respective locations and functions:
$(1)$ Synovial fluid
$(2)$ Troponin

(N/A) $(1)$ Location: In freely movable joints,a gap is found between the articulating surfaces of two bones,known as the synovial space.
Function: The synovial space is filled with viscous synovial fluid. It lubricates the joints of bones to facilitate easy movement.
$(2)$ Location: It is a small,complex globular protein distributed along with tropomyosin at definite intervals on the actin filaments.
Function: In the relaxed state,troponin masks the active binding sites for myosin on the actin filaments,preventing contraction until calcium ions are released.