Following are some Biomedical signals along with their origin.
A. Electromyogram - Muscular system
B. Electrooculogram - Nervous system
C. Phonocardiogram - Heart
D. Electrocardiogram - Cardiovascular system
E. Magneto-encephalogram - Cardiovascular system
Choose the correct answer from the options given below :
A. Electromyogram - Muscular system
B. Electrooculogram - Nervous system
C. Phonocardiogram - Heart
D. Electrocardiogram - Cardiovascular system
E. Magneto-encephalogram - Cardiovascular system
Choose the correct answer from the options given below :
Show Hint
"Myo" = Muscle (EMG)
"Oculo" = Eye (EOG)
"Phono" = Sound (PCG)
"Cardio" = Heart (ECG)
"Encephalo" = Brain (EEG/MEG).
- A, C, D Only
- A, C, D, E Only
- A, B, C Only
- A, D, E Only
The Correct Option is A
Solution and Explanation
This question tests knowledge of various diagnostic biomedical instrumentation signals and accurately matching them to their physiological source systems within the human body.
Step 2: Step-by-step Explanation:
• A. Electromyogram (EMG) - Muscular system (True): An EMG measures the electrical activity produced by skeletal muscles during rest and voluntary contraction.
• B. Electrooculogram (EOG) - Nervous system (Debatable/Often classed separately): An EOG measures the resting corneo-retinal potential (the dipole between the front and back of the eye). While the retina is neural tissue, clinical questions often separate the visual/ocular system from the general "nervous system." Given the option choices, this statement is treated as excluded.
• C. Phonocardiogram (PCG) - Heart (True): A PCG is a high-fidelity diagnostic recording of the acoustic sounds and murmurs produced by the mechanical pumping and valve closures of the heart.
• D. Electrocardiogram (ECG/EKG) - Cardiovascular system (True): An ECG records the electrical conduction pathways (depolarization and repolarization) traversing the heart muscle during each cardiac cycle.
• E. Magneto-encephalogram (MEG) - Cardiovascular system (False): An MEG maps brain activity by recording extremely weak magnetic fields produced by electrical currents occurring naturally in the brain. Its origin is strictly the central nervous system, not the cardiovascular system.
• Because E is definitively false, any option containing E is incorrect. Based on the remaining definitive truths, A, C, and D are the most accurate pairing.
Step 3: Final Answer:
The correct valid combinations are A, C, and D Only.
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