What is sadness ??
what is depression ??​

sadness the condition or quality of being sad; Unhappy

depression:

feelings of severe despondency and dejection; Suicidal thoughts

Explanation:

Sadness is the nature feeling we react for losing our precious thing we had.

Depressionis a constant feeling of sadness and loss of interest, which stops you doing your normal activities.

the oblique cord is a ligament between the ulnar and radius bones in the lower arm near the elbow. it takes the form of a small, flattened band, extending downward and lateralward, from the lateral side of the ulnar tuberosity at the base of the coronoid process to the radius a little below the radial tuberosity.

answer; /// i believe its the cochlea;