Large airways branching from the trachea

Small airways leading to the alveoli

Muscles surrounding the lungs

Tissues that filter air

SA node → AV node → Bundle of His → Purkinje fibers

SA node → Bundle of His → AV node → Purkinje fibers

AV node → SA node → Purkinje fibers → Bundle of His

Bundle of His → Purkinje fibers → SA node → AV node

Enlarged spleen

Inflamed liver

Swollen lymph nodes

Enlarged gallbladder

Smaller airways within the lungs

Large blood vessels in the heart

Muscles that control breathing

Cells that produce mucus in the respiratory tract

Inflammation of lymph nodes

Swelling of the spleen

Infection of the skin

Enlargement of blood vessels

Main lymphatic vessels that drain lymph into the bloodstream

Small veins that carry oxygenated blood

Major arteries supplying the heart

Nerves that control lymphatic flow

Receives deoxygenated blood from the body

Pumps oxygenated blood to the lungs

Receives oxygenated blood from the lungs

Pumps deoxygenated blood to the body

Flap that prevents food from entering the airway

Muscle that helps in swallowing

Part of the stomach that digests food

Valve that controls airflow in the lungs

Cancer of the lymphatic system

A type of skin cancer

A form of brain cancer

A respiratory disease

Hardening and loss of elasticity of arteries

Inflammation of the arteries

Widening of the arteries

Formation of blood clots in arteries

Protective sac surrounding the heart

Muscle layer of the heart

Outer layer of the lungs

Fluid-filled cavity in the abdomen

Transport blood throughout the body

Transport lymph throughout the body

Store excess fat in the body

Produce red blood cells

Genetic disorder causing impaired blood clotting

Autoimmune disease affecting the skin

Infectious disease caused by a virus

Metabolic disorder leading to obesity

Spleen and liver

Bone marrow and thymus

Kidneys and pancreas

Lungs and heart

Inflammation of the tonsils

Infection of the throat

Swelling of the lymph nodes

Allergy to pollen

Pumps deoxygenated blood to the lungs

Pumps oxygenated blood to the body

Receives blood from the right atrium

Regulates blood pressure in the arteries

Tiny vessels where gas and nutrient exchange occurs

Large arteries that carry oxygenated blood

Veins that return deoxygenated blood to the heart

Muscular tubes that transport lymph fluid

Liquid portion of blood that carries nutrients and waste

Solid component of blood responsible for clotting

Cellular component that transports oxygen

Fluid that regulates body temperature

Bacterial lung infection caused by Mycobacterium tuberculosis

Viral infection affecting the liver

Fungal infection of the skin

Parasitic infection of the intestines