WGU D313 OA AND PA ANATOMY AND PHYSIOLOGY
EXAM 2025/2026 TEST BANK ACTUAL EXAM
QUESTIONS WITH DETAILED VERIFIED ANSWERS
WITH RATIONALES (100% CORRECT ANSWERS) /A+
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What does the red pulp of the splenic nodule consist of? -
Answer-reticular fibers
What is a primary function of a lymph node? - Answer-filter
bacteria out of the blood
What is an example of a primary lymphoid organ? -
Answer-thymus
Which vessel do the right side of the face, neck, right
upper extremity, and right thorax drain into? - Answer-right
subclavian vein
Through which structure does lymphatic fluid enter the
lymph node? - Answer-through the afferent lymphatic
vessel
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Which circulatory pathway leads to bacteria being
removed from the body? - Answer-lymphatic
What is the first line of defense when pathogens breach
the defense barriers of the body? - Answer-phagocyte
cells
Which cell performs the major function of bringing
antigens to regional draining lymph nodes during antigen
presentation? - Answer-dendritic cells
Which cells are involved in the second stage of
inflammation? - Answer-macrophages
What is another term for epitope? - Answer-antigenic
determinant
Which type of adaptive immune cell regulates other types
of immune cells? - Answer-helper T cells
Which immune system component is found in breast milk?
- Answer-antibodies
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Where do T cells mature? - Answer-thymus
At which phase of human development is the thymus
gland at its largest? - Answer-young child
Which statement is correct about the lymph node? -
Answer-lymph nodes contains macrophages and
lymphocytes
What are 2 functions of the red pulp of the spleen? -
Answer-acts as an important reserve for platelets and red
blood cells
removes worn-out red and white blood cells and platelets
Which lymphatic tissue is found in the small intestine? -
Answer-GALT
Where is the most active marrow found? - Answer-heads
of the femur and humerus