BIOS 255 EXAM 2 Latest 2025/2026 Questions
and Answers (Veri ied Answers)
1. Which blood vessel class is the largest and is characterized by having a
thick tunica media dominated by elastic laminae?
Elastic arteries
2. Which of the following is NOT considered an organ of the lymphatic
system?
Pancreas
3. The lymphatic capillary bed drains fluid directly from where?
Interstitial fluid
4. Which blood vessel carries deoxygenated but nutrient, rich blood from the
intestines to the liver?
Hepatic portal vein
5. The majority of venous blood from veins originating above the diaphragm
will drain into which blood vessel before draining into the heart?
Superior vena cava
6. Lymph from above the diaphragm on the left side, and bilaterally below the
diaphragm is returned to the venous circulation by way of the:
Thoracic duct
7. A drop of blood is in the axillary vein. What is the next vessel that blood
will enter?
Subclavian vein

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