The walls of the alimentary canal share a common pattern from esophagus to anus. How many tunics (layers) make up the wall?
A) 2 B) 3 C) 4 D) 5
Answer: C
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Which of the following is an effect of aging on the urinary system?
A. Increased occurrence of kidney stones B. More frequent and urgent urination C. Incontinence D. All apply.
Which of the following drinks reduces the amount of iron absorbed from food?
A) Wine B) Tea C) Coffee D) Milk
In an enzymatic reaction, when temperature is increased past the point of "optimal temperature," the enzyme starts to ________.
A. reduce its catalytic activity B. increase product formation C. increase its catalytic activity D. increase its allosteric properties
Sympathetic innervation of the hearta: increases the heart rateb: decreases the heart ratec: increases the force of contractionsd: decreases the force of contractionse: has no effect on contraction force
A. b, e B. a, d C. a, e D. b, d E. a, c