Which of the following vitamins are thought to play a role in decreasing the physiological changes in aging?
A. Vitamins A and B12
B. Vitamins A and K
C. Vitamins E and C
D. Vitamins A and B6
E. Vitamins A and D
Answer: C
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Which of the following does not occur during the micturition reflex in a baby?
a. The motor neuron supplying the external sphincter is stimulated. b. The parasympathetic nerve supply to the bladder is stimulated. c. The internal urethral sphincter mechanically opens due to changes in the shape of the bladder. d. The external urethral sphincter is relaxed. e. The bladder contracts.
Neurons that use norepinephrine as a transmitter are called
A) cholinergic. B) adrenergic. C) nicotinic. D) muscarinic.
Equal amounts of two solutes, A and B, are placed into the same beaker of water at the same time. Solute A reaches diffusion equilibrium faster than solute B. What is the most likely explanation for this observation?
A. The temperature was greater for solute A than solute B. B. The concentration gradient for A was greater than B. C. Solute A is smaller than solute B. D. Solute A traveled a shorter distance than solute B. E. Solute B is more soluble in water than solute A.
The cells of an alveolus that secrete surfactant are type ________
Fill in the blank(s) with correct word