Q.Complete the missing word in the statement given below:
a. Plasma without _________ factors is called serum.
b. ___________ and monocytes are phagocytic cells.
c. Eosinophils are associated with _____ reactions.
d. _______ ions play a significant role in clotting.
e. One can determine the heart beat rate by counting the number of _________ in an ECG.

a. Plasma without clotting factors is called serum.

b. Neutrophils and monocytes are phagocytic cells.

c. Eosinophils are associated with allergic reactions.

d. Calcium ions play a significant role in clotting. …

a. A useful distinction in blood chemistry: when the clotting factors are removed from plasma, the fluid that remains is called serum — so serum is plasma without its clotting factors.

b. Among the white blood cells, neutrophils (the most abundant, about 60–65%) and monocytes (about 6–8%) are both phagocytic, engulfing and destroying foreign organisms.

c. Eosinophils, making up about 2–3% of white blood cells, resist infections and are also linked to allergic reactions. …

Method: Filling a Blood-Physiology Blank from a Functional Clue

Use this approach whenever a statement about blood or the heart has a term missing and you must supply it from context.

Steps

Step 1: Identify what category of fact the blank belongs to

Decide whether the missing word is a component (a cell type, a protein), a process (a reaction), or a quantity/reading (a count, a wave). This narrows the pool of possible answers before you guess.

Step 2: Recall the defining property, not just the name

Each blood/heart component has one or two signature properties that the question is testing: e.g., "phagocytic" points to neutrophils/monocytes, "allergic reactions" points to eosinophils, an ion "essential for clotting" points to calcium, a repeating waveform on a tracing that reflects each heartbeat points to the QRS complex. …