Speaking of Ecclesiastes...
Ecclesiastes 12:3-7 KJV
In the day when the keepers of the house shall tremble, and the strong men shall bow themselves, and the grinders cease because they are few, and those that look out of the windows be darkened, [4] And the doors shall be shut in the streets, when the sound of the grinding is low, and he shall rise up at the voice of the bird, and all the daughters of musick shall be brought low; [5] Also when they shall be afraid of that which is high, and fears shall be in the way, and the almond tree shall flourish, and the grasshopper shall be a burden, and desire shall fail: because man goeth to his long home, and the mourners go about the streets: [6] Or ever the silver cord be loosed, or the golden bowl be broken, or the pitcher be broken at the fountain, or the wheel broken at the cistern. [7] Then shall the dust return to the earth as it was: and the spirit shall return unto God who gave it.
I've heard Chuck Swindoll itemize each of these as different parts of the body as we age.
Amplified Bible gives a shortened version...
Ecclesiastes 12:2-7 AMP
before the sun and the light, and the moon and the stars are darkened [by impaired vision], and the clouds [of depression] return after the rain [of tears]; [3] in the day when the keepers of the house (hands, arms) tremble, and the strong men (feet, knees) bow themselves, and the grinders (molar teeth) cease because they are few, and those (eyes) who look through the windows grow dim; [4] when the doors (lips) are shut in the streets and the sound of the grinding [of the teeth] is low, and one rises at the sound of a bird and the crowing of a rooster, and all the daughters of music (voice, ears) sing softly. [5] Furthermore, they are afraid of a high place and of dangers on the road; the almond tree (hair) blossoms [white], and the grasshopper (a little thing) is a burden, and the caperberry (desire, appetite) fails. For man goes to his eternal home and the mourners go about the streets and market places. [6] Earnestly remember your Creator before the silver cord [of life] is broken, or the golden bowl is crushed, or the pitcher at the fountain is shattered and the wheel at the cistern is crushed; [7] then the dust [out of which God made man's body] will return to the earth as it was, and the spirit will return to God who gave it.