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.
Answer: E
You might also like to view...
The hair cells for hearing are located in the
a. cochlea. b. Eustachian tube. c. saccule. d. utricle. e. vestibule.
The circuitry of the autonomic system allows for control in activation. The characteristic that allows a small number of preganglionic cells to stimulate a large number of postganglionic cells is
A. divergence. B. reciprocal innervation. C. reverberation. D. convergence.
The electron transport chain
A. does not require oxygen, and involves proteins in the outer membrane of mitochondria. B. does not require oxygen, and involves proteins in the cristae of mitochondria. C. requires oxygen, and involves proteins in the outer membrane of mitochondria. D. requires oxygen, and involves proteins in the cristae of mitochondria.
The external marking of the boundary between the two testes is the
A) spermatic cord. B) raphe. C) tunica albuginea. D) acrosome. E) dartos muscle.