The instrument used to measure blood pressure is a:
A. Electrocardiograph
B. Stethoscope
C. Thermometer
D. Sphygmomanometer
Answer: Option D
Solution (By JKExamLibrary)
A sphygmomanometer, often used with a stethoscope, measures arterial blood pressure (systolic/diastolic) in mmHg. A stethoscope listens to heart/lung sounds, thermometer measures temperature, ECG records heart electrical activity. Normal blood pressure is about 120/80 mmHg.
Explanation:
ER is a continuous membrane system; rough ER has ribosomes for protein synthesis, smooth ER for lipid synthesis and detoxification. Golgi modifies and packages.
Consider the following statements about the circulatory system:
1. Arteries carry blood away from the heart.
2. Veins have valves to prevent backflow.
3. Capillaries are thick-walled vessels.
Which of the above is/are correct?
Explanation:
Arteries carry blood from the heart; veins have valves; capillaries are thin-walled for exchange. Statement 3 is false. So 1 and 2 are correct.
Explanation:
NAD⁺ (nicotinamide adenine dinucleotide) is a coenzyme derived from vitamin B₃, serving as an electron carrier in redox reactions. Pepsin is an enzyme, collagen a structural protein, hemoglobin a transport protein. Coenzymes are organic non-protein molecules that assist enzymes.
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