,BIOL252/BIOL 252 Module 4 Exam | Human Anatomy &
Physiology II w/ Lab | Portage Learning | Q & A | 2026/2027
Edition (PDF)
**1. Which of the following is a primary function of the lymphatic system?**
A) Transport of oxygen to body tissues
B) Return of interstitial fluid to the blood
C) Synthesis of vitamin D
D) Production of red blood cells
Correct Answer: Return of interstitial fluid to the blood
Rationale: The lymphatic system collects excess interstitial fluid and plasma proteins and returns them
to the venous circulation, maintaining fluid balance. It does not transport oxygen (red blood cells do),
produce red blood cells (bone marrow does), or synthesize vitamin D (skin does).
**2. Specialized lymphatic capillaries in the small intestine that absorb dietary lipids are called:**
A) Arterioles
B) Sinusoids
C) Venules
D) Lacteals
Correct Answer: Lacteals
Rationale: Lacteals are lymphatic capillaries located in the villi of the small intestine that absorb
chylomicrons containing long-chain fatty acids. Arterioles and venules are blood vessels, and sinusoids
are leaky capillaries found in organs like the liver.
**3. Which of the following is NOT a function of the lymphatic system?**
A) Immune defense
B) Fluid balance
,C) Transport of dietary lipids
D) Transport of oxygen
Correct Answer: Transport of oxygen
Rationale: The lymphatic system functions in immune defense, fluid balance, and lipid absorption.
Transport of oxygen is a function of the cardiovascular system (red blood cells). The lymphatic system
does not have a direct role in oxygen transport.
**4. The flow of lymph through the lymphatic system follows which sequence?**
A) Ducts → Trunks → Vessels → Capillaries
B) Capillaries → Vessels → Trunks → Ducts
C) Vessels → Capillaries → Trunks → Ducts
D) Capillaries → Trunks → Vessels → Ducts
Correct Answer: Capillaries → Vessels → Trunks → Ducts
Rationale: Lymph flows from lymphatic capillaries into larger lymphatic vessels, then into lymphatic
trunks, and finally into lymphatic ducts that empty into the venous circulation. This one-way flow is
driven by skeletal muscle contractions and respiratory movements.
**5. The five types of lymphatic trunks include lumbar, bronchomediastinal, subclavian, jugular, and:**
A) Intercostal
B) Intestinal
C) Femoral
D) Iliac
Correct Answer: Intestinal
, Rationale: The five major lymphatic trunks are the lumbar, bronchomediastinal, subclavian, jugular, and
intestinal trunks. These trunks drain major regions of the body and converge to form the thoracic duct
and right lymphatic duct.
**6. Which lymphatic duct drains the upper right quadrant of the body?**
A) Thoracic duct
B) Right lymphatic duct
C) Cisterna chyli
D) Intestinal trunk
Correct Answer: Right lymphatic duct
Rationale: The right lymphatic duct drains lymph from the right upper quadrant of the body (right arm,
right side of the head and thorax). The thoracic duct drains the rest of the body. The cisterna chyli is a
dilated sac at the base of the thoracic duct.
**7. The thoracic duct drains lymph from which regions of the body?**
A) The entire body except the right upper quadrant
B) The entire body
C) Only the lower extremities
D) Only the left side of the body
Correct Answer: The entire body except the right upper quadrant
Rationale: The thoracic duct is the largest lymphatic vessel and drains lymph from the entire body
except the right upper quadrant, which is drained by the right lymphatic duct. It originates from the
cisterna chyli and empties into the left subclavian vein.
**8. Which of the following is a primary lymphoid organ?**
A) Spleen
B) Lymph node
Physiology II w/ Lab | Portage Learning | Q & A | 2026/2027
Edition (PDF)
**1. Which of the following is a primary function of the lymphatic system?**
A) Transport of oxygen to body tissues
B) Return of interstitial fluid to the blood
C) Synthesis of vitamin D
D) Production of red blood cells
Correct Answer: Return of interstitial fluid to the blood
Rationale: The lymphatic system collects excess interstitial fluid and plasma proteins and returns them
to the venous circulation, maintaining fluid balance. It does not transport oxygen (red blood cells do),
produce red blood cells (bone marrow does), or synthesize vitamin D (skin does).
**2. Specialized lymphatic capillaries in the small intestine that absorb dietary lipids are called:**
A) Arterioles
B) Sinusoids
C) Venules
D) Lacteals
Correct Answer: Lacteals
Rationale: Lacteals are lymphatic capillaries located in the villi of the small intestine that absorb
chylomicrons containing long-chain fatty acids. Arterioles and venules are blood vessels, and sinusoids
are leaky capillaries found in organs like the liver.
**3. Which of the following is NOT a function of the lymphatic system?**
A) Immune defense
B) Fluid balance
,C) Transport of dietary lipids
D) Transport of oxygen
Correct Answer: Transport of oxygen
Rationale: The lymphatic system functions in immune defense, fluid balance, and lipid absorption.
Transport of oxygen is a function of the cardiovascular system (red blood cells). The lymphatic system
does not have a direct role in oxygen transport.
**4. The flow of lymph through the lymphatic system follows which sequence?**
A) Ducts → Trunks → Vessels → Capillaries
B) Capillaries → Vessels → Trunks → Ducts
C) Vessels → Capillaries → Trunks → Ducts
D) Capillaries → Trunks → Vessels → Ducts
Correct Answer: Capillaries → Vessels → Trunks → Ducts
Rationale: Lymph flows from lymphatic capillaries into larger lymphatic vessels, then into lymphatic
trunks, and finally into lymphatic ducts that empty into the venous circulation. This one-way flow is
driven by skeletal muscle contractions and respiratory movements.
**5. The five types of lymphatic trunks include lumbar, bronchomediastinal, subclavian, jugular, and:**
A) Intercostal
B) Intestinal
C) Femoral
D) Iliac
Correct Answer: Intestinal
, Rationale: The five major lymphatic trunks are the lumbar, bronchomediastinal, subclavian, jugular, and
intestinal trunks. These trunks drain major regions of the body and converge to form the thoracic duct
and right lymphatic duct.
**6. Which lymphatic duct drains the upper right quadrant of the body?**
A) Thoracic duct
B) Right lymphatic duct
C) Cisterna chyli
D) Intestinal trunk
Correct Answer: Right lymphatic duct
Rationale: The right lymphatic duct drains lymph from the right upper quadrant of the body (right arm,
right side of the head and thorax). The thoracic duct drains the rest of the body. The cisterna chyli is a
dilated sac at the base of the thoracic duct.
**7. The thoracic duct drains lymph from which regions of the body?**
A) The entire body except the right upper quadrant
B) The entire body
C) Only the lower extremities
D) Only the left side of the body
Correct Answer: The entire body except the right upper quadrant
Rationale: The thoracic duct is the largest lymphatic vessel and drains lymph from the entire body
except the right upper quadrant, which is drained by the right lymphatic duct. It originates from the
cisterna chyli and empties into the left subclavian vein.
**8. Which of the following is a primary lymphoid organ?**
A) Spleen
B) Lymph node
