Excessive production of free radicals that can damage lipids, proteins, and DNA is called ________.
A. inflammation
B. quenching
C. oxidative stress
D. antioxidation
Answer: C
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The countercurrent multiplier is a system by which the
A. nephron loop multiplies the concentration of salts in the interstitial fluid of the kidney medulla. B. nephron loop dilutes the concentration of solutes in the tubular fluid at its hairpin turn. C. vasa recta secretes multiple amounts of metabolic wastes against their concentration gradient. D. vasa recta becomes more concentrated with nitrogenous wastes than the urine.
A patient experienced permanent damage to the hair cells in the cochlea. This will interfere with the ability of sound waves to reach the inner ear.
Answer the following statement true (T) or false (F)
________ and __________ are the most common phagocytic cells in the blood.
A. Neutrophils; eosinophils B. Eosinophils; monocytes C. Neutrophils; monocytes D. Natural killer cells; eosinophils
The knee-jerk reflex involves which of the following?
A. sensory and motor neurons B. sensory, association and motor neurons C. sensory, motor and inhibitory interneurons D. sensory and association neurons E. the brain