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

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

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

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

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

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

Which vitamin acts as an antioxidant protecting cells from damage and is found in nuts and seeds?

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

Which B vitamin deficiency commonly causes the disease beriberi affecting the nervous and cardiovascular systems?

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

Which everyday material is a good thermal insulator commonly used in winter clothing to retain body heat?