DN 12.1

The tiny oval shaped lymph structure located throughout the body are known as?

• Lymph nodes
• Spleen
• Lymph fluid

The largest lymphatic structure is?

• Lymph
• tonsils
• Spleen

What is the medical term for watery fluid inside the lympathic vessels?

• Plasma
• Lymph
• Blood

What part of the lymphatic system filters foreign material from blood and destroys old RBCs?

• spleen
• lymph nodes
• thymus 
• lymphatic vessels

A soft tissue inside the bone that produces blood cells

• immune cells
• lymph nodes
• spleen
• bone marrow

Where do T cells mature?

• blood
• bone marrow
• thymus
• tonsils

Which immune system organ is found in the back of the throat?

• thymus

• spleen

• tonsil

• liver

What do scientists call bacteria and viruses that can make people sick?  

• diseases
• vaccines
• antibodies
• pathogens

What is structure B?

• Lymph Vessels

• Spleen

• Thymus

• Tonsils

What is structure C?

• Lymph Vessels

• Spleen

• Thymus

• Tonsils