Thoracic Duct & Lymphatic System - MCQs

What is the main function of the lymphatic system?

• Transport oxygen

• Maintain fluid balance and immunity

• Produce red blood cells

• Absorb carbohydrates

Which of the following is NOT a component of the lymphatic system?

• Lymph

• Lymphatic vessels

• Bone marrow

• Kidneys

What is the origin of the thoracic duct?

• Right lymphatic duct

• Cisterna chyli

• Subclavian vein

• Aortic arch

The right lymphatic duct drains lymph from:

• Entire body below the diaphragm

• Right upper quadrant of the body

• Left upper limb

• Both lower limbs

What percentage of interstitial fluid enters the lymphatic system daily?

• 5%

• 15%

• 25%

• 50%

Which of the following organs is considered a primary lymphoid organ?

• Spleen

• Lymph nodes

• Thymus

• Peyer's patches

Which vessel does the thoracic duct empty into?

• Right subclavian vein

• Inferior vena cava

• Left subclavian vein

• Azygos vein

The function of lymph nodes includes:

• Producing antibodies

• Filtering lymph

• Absorbing dietary lipids

• Transporting oxygen

Which lymphatic trunk drains the gastrointestinal tract?

• Jugular trunk

• Intestinal trunk

• Bronchomediastinal trunk

• Subclavian trunk

What is the largest lymphatic vessel in the body?

• Right lymphatic duct

• Thoracic duct

• Subclavian trunk

• Jugular trunk