CMA Knowledge 4 — Questions and Answers
Question 1: Which part of the nervous system controls involuntary functions such as heart rate and digestion?
- Somatic nervous system
- Autonomic nervous system (Correct answer)
- Central nervous system
- Peripheral sensory system
Correct answer: Autonomic nervous system
The autonomic nervous system regulates involuntary body functions including heart rate, respiration, and digestion.
Question 2: What is the term for the phase of the cardiac cycle when the ventricles contract?
- Diastole
- Systole (Correct answer)
- Refractory period
- Depolarization lag
Correct answer: Systole
Systole is the phase of the cardiac cycle during which the ventricles contract and eject blood into the arteries.
Question 3: Which structure connects muscle to bone?
- Ligament
- Cartilage
- Tendon (Correct answer)
- Bursa
Correct answer: Tendon
Tendons are fibrous connective tissue structures that attach skeletal muscles to bones.
Question 4: A patient's urine is dark amber with a strong odor. This most likely indicates:
- Overhydration
- Kidney failure
- Dehydration (Correct answer)
- Urinary tract infection only
Correct answer: Dehydration
Dark, concentrated urine with a strong odor is a classic sign of dehydration caused by insufficient fluid intake.
Question 5: Which lobe of the brain is primarily responsible for processing visual information?
- Frontal lobe
- Parietal lobe
- Temporal lobe
- Occipital lobe (Correct answer)
Correct answer: Occipital lobe
The occipital lobe, located at the back of the brain, is the primary visual processing center.
Question 6: The medical suffix '-ectomy' means:
- Inflammation of
- Surgical removal of (Correct answer)
- Incision into
- Disease of
Correct answer: Surgical removal of
The suffix '-ectomy' indicates a surgical procedure involving removal of an organ or tissue (e.g., appendectomy).
Question 7: Which of the following electrolytes is most critical for maintaining normal cardiac rhythm?
- Calcium
- Potassium (Correct answer)
- Sodium
- Magnesium
Correct answer: Potassium
Potassium is essential for normal cardiac conduction; both hypokalemia and hyperkalemia can cause life-threatening arrhythmias.
CMA Knowledge 4
Which part of the nervous system controls involuntary functions such as heart rate and digestion?