Module 4 Exam Review / 80+ questions
Module 4: The Lymphatic System and Immunity
Correct answers
Section 1: Lymphatic System Structure and Function
Question 1
What is the primary function of the lymphatic system regarding fluid balance?
= Transporting hormones throughout the body
• ✅ Returning excess interstitial fluid to the bloodstream
= Producing red blood cells
= Filtering metabolic waste from the blood
Question 2
The fluid contained within lymphatic vessels is known as:
= Interstitial fluid
= Blood plasma
• ✅ Lymph
= Synovial fluid
,Question 3
Lymphatic capillaries are more permeable than blood capillaries due to the
presence of:
= Tight junctions
• ✅ Mini-valves (or flaps) formed by overlapping endothelial cells
= A thick basement membrane
= Cilia
Question 4
Where does lymph re-enter the cardiovascular system?
= Cisterna chyli
= Jugular veins
• ✅ Subclavian veins
= Aorta
Question 5
The right lymphatic duct drains lymph into the junction of the right:
= Internal jugular and right brachiocephalic veins
• ✅ Internal jugular and right subclavian veins
= External jugular and right subclavian veins
= Subclavian and right vertebral veins
, Question 6
The largest lymphatic vessel, which drains the lower body and left upper body,
is the:
= Right lymphatic duct
= Thoracic aorta
• ✅ Thoracic duct
= Cisterna chyli
Question 7
The cisterna chyli is an enlarged sac at the origin of the:
= Right lymphatic duct
• ✅ Thoracic duct
= Aorta
= Spleen
Question 8
Lacteals, a type of lymphatic capillary, are found in the intestine and absorb
what type of biomolecule?
= Glucose
= Amino acids
• ✅ Fats (lipids)
= Water-soluble vitamins