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

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

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

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

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

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

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

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

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

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

Which everyday material is a poor conductor of heat and is commonly used as cookware handles?