Which of the following types of cells display the property of electrical excitability?
a) Muscle cells
b) Neurons
c) All of these choices
d) None of these choices
c
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. This figure shows an example of regulation of hormone secretion by a negative feedback loop. The large box labeled 1 represents the initial stimulus. Which could be the initial stimulus for this pattern of regulation?
A. High blood calcium level B. Low body temperature C. Low blood sugar level D. High WBC (white blood cell) count E. Low RBC (red blood cell) count
Which of the following animals can see well in a 360 degree radius?
a. horses c. rabbits b. cattle d. sheep
What is the function of the inner hair cells?
A. The inner hair cells protect the external auditory canal. B. The inner hair cells regulate the tension of the basilar membrane. C. The inner hair cells detect chemicals in saliva; they are responsible for our ability to taste. D. The inner hair cells are responsible for hearing.
Which of the following statements regarding pathways for somatic perception projection is correct?
A) The tertiary sensory neurons cross-over the body's midline. B) Primary sensory neurons from the hands project to a specific region of the somatosensory cortex. C) Primary sensory neurons that respond to cold sensation project to the same region of the somatosensory cortex. D) The longest of the secondary sensory neurons transmit fine touch and proprioceptive information. E) The synapse for the secondary to tertiary sensory neuron is within the medulla.