The human kidneys filter about 200 quarts of blood every day, removing waste and excess fluids to produce urine.The human brain is composed of about 86 billion neurons, forming complex networks that control thoughts, emotions, and actions.The human skin is thickest on the palms of the hands and soles of the feet, providing extra protection and support for these areas.The human body contains over 300 joints, allowing for movement and flexibility in various activities.The human liver can regenerate itself even after losing up to 75% of its mass, making it one of the most resilient organs in the body.The average person produces about 4 cups of mucus every day, helping to trap and remove dust, bacteria, and other particles from the respiratory system.The human body contains over 600 lymph nodes, which play a crucial role in the immune system by filtering lymph fluid and trapping harmful substances.The human skeleton accounts for about 15% of total body weight in adults, providing support, protection, and structure for the body.The human heart pumps about 2,000 gallons of blood every day, delivering oxygen and nutrients to cells throughout the body.The human stomach can expand to hold about 1-1.5 liters of food and liquid, stretching to accommodate larger meals.