What role do red blood cells play in the various functions of the blood?
A. Transportation and regulation
B. Regulation
C. Transportation
Answer: A
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X, Y, and Z are adjacent sensory receptors in the skin. During administration of the flu shot, a needle is inserted in the middle of Y's receptive field. All three receptors are activated. Which of the following is likely to be true?
A. The receptor potential in neurons X and Z will be more depolarized than in neuron Y. B. It won't be possible to discriminate which neuron's receptive field was stimulated at its center. C. The frequency of action potentials in the afferent pathway from neuron Y will be increased by excitatory interneurons projecting from the afferent pathways from neurons X and Z. D. The receptor potentials in all three neurons will achieve the same, average value. E. The frequency of action potentials in neuron Y will be greater than that in neurons X and Z.
Which of the following does not participate in control of skeletal muscle activity?
a. limbic system b. cerebellum c. supplementary motor area d. premotor cortex e. posterior parietal cortex
An example of a monosaccharide is ________.
A. glucose B. glycogen C. sucrose D. maltose
Match the following:
A) Spiral organ (of Corti) B) Vestibule C) Cochlear duct D) Tympanic membrane 1) Houses the spiral organ (of Corti.) 2) The receptor organ for hearing. 3) The central part of the bony labyrinth. 4) A membrane that transmits sound vibrations to the auditory ossicles.