Yes, the human body has many parts, or members, and each one supplies something needed. Not a single vein, muscle, or other body member is purposeless.
শৰীৰত থকা কোনো এটা সিৰা, মাংসপেশী বা অঙ্গ কৰ্ম্মহীনভাৱে থকা নাই ।