Which fluid cushions and protects the brain and spinal cord from mechanical shock?

Which protective membranes cover and protect the brain and spinal cord?

Which fluid lubricates joints and reduces friction between bones during movement?

Which membrane surrounds the heart and protects it within the chest cavity?

Which fluid in the lymphatic system helps transport white blood cells and remove waste from tissues?

Which membrane surrounds the lungs and reduces friction during breathing movements?

Which white blood cell type is primarily responsible for producing antibodies against pathogens?

Which gas exchange membrane structure in the lungs maximizes surface area for efficient breathing?

Which white blood cell type is the most abundant and primarily fights bacterial infections?

Which soft tissue found inside bones is responsible for producing new blood cells?

Which vitamin is essential for proper blood clotting and is often associated with green leafy vegetables?