Maryville NURS 611 Exam 3 Review Questions with Verified Answers 2026

What 2 unique properties do RBC's have? 1. Biconcave shape 2. Capacity to be reversibly deformed What does the flattened, biconcave shape of an RBC provide? A surface area/ volume ratio thats optimal for gas diffusion into and out fo the cell How does the RBCs reversible deformity allow for the erythrocyte? To assume a more compact torpedo-like shape, squeeze through microcirculation, and return to normal What is hemoglobin synthesis very dependent on? Nutritional intake Name two of the most important nutrients for hemoglobin synthesis? -Vitamin B6 (pyridoxine) -Iron What are the values of iron for male and females? Male: 16 Female: 14 What makes the iron cycle possible? Transferin What is transferrin? Plasma Carrier Explain the process of the iron cycle: 1. Tissue macrophages (mostly in spleen) break down ingested erythrocytes 2. Break down ingested erythrocytes 3. Return iron to the bloodstream directly or after storing it What are leukocytes and what two things do they do? - WBCs 1.Defends the body against microorganisms that cause infection 2. Remove debris (dead/injured cells) What do leukocytes primarily act in? Where are they transported? The tissues but are transported in the circulation How many leukocytes does the average adult have? 5-10k leukocytes/mm3 of blood What is the most numerous and best understood of the granulocytes? Neutrophils (PMN) What are immature neutrophils called? bands or stabs What are mature neutrophils called? segmented neutrophils b/c of the appearance of their nucleus What happens when the demand for circulating mature neutrophils exceeds the supply? Marrow begins to release immature neutrophils in the blood What are responsible for "shift-to-the-left" or leukemoid reaction? (2) 1. Premature release of immature white cells 2. Systemic signs of infection such as fever What is anemia? 1. A reduction in the total number of erythrocytes in the circulating blood 2. A decrease in the quality or quantity of hemoglobin What 4 things usually cause anemia?