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NHA Certified Clinical Medical Assistant
(CCMA) Exam | 500 Questions and
Answers | Complete Study Guide &
Exam Preparation
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A patient develops infection after improper hand Chain of infection was not interrupted at the "mode of transmission"
hygiene by staff. What principle was violated? step; improper hand hygiene allowed pathogen spread.
The smallest functional unit of life is the ______. Cell
Which organelle is responsible for ATP Mitochondria; known as the powerhouse of the cell producing energy
production? via cellular respiration.
A medical assistant uses alcohol sanitizer but Incorrect. Soap and water are required because alcohol does not
hands are visibly soiled. Is this correct? Why or remove organic matter effectively.
why not?
What is homeostasis? The body's ability to maintain stable internal conditions despite
external changes like temperature and pH.
Normal blood pH range is ______. 7.35-7.45
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What is the primary function of leukocytes? Defense against infection through immune response including
phagocytosis and antibody production.
Patient has fever and elevated WBC count. What Likely infection or inflammation; leukocytosis indicates immune system
does this indicate? activation.
Define "pathogen." A microorganism capable of causing disease such as bacteria, viruses,
fungi, or parasites.
Which part of the chain of infection is the The natural environment where pathogens live and multiply (humans,
reservoir? surfaces, equipment).
The heart is part of the ______ system. Cardiovascular
What is the role of platelets? Blood clotting through plug formation and activation of coagulation
cascade.
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A patient has low hemoglobin. What condition is Anemia; reduced oxygen-carrying capacity of blood.
suspected?
Antibiotics are effective against viral infections. False. Antibiotics treat bacteria only, not viruses.
What is diffusion in physiology? Movement of molecules from high to low concentration without
energy use.
Oxygen exchange occurs in the ______. Alveoli
What is the primary function of the endocrine Hormone regulation controlling metabolism, growth, and homeostasis.
system?
A student says arteries always carry oxygenated False. Pulmonary arteries carry deoxygenated blood; pulmonary veins
blood. Correct? carry oxygenated blood.
Define "inflammation." Body's protective response to injury or infection causing redness, heat,
swelling, pain, and loss of function.
What is the function of the kidney? Filters blood, removes waste, balances fluids and electrolytes, and
produces urine.
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