Which of the following is an incorrect statement regarding the occurrence of a sensation?
A) A generator potential in the associated sensory neuron must reach threshold.
B) The stimulus energy must be converted into the energy of a graded potential
called a transduction potential.
C) The stimulus energy must match the specificity of the receptor.
D) The stimulus energy must occur within the receptor's receptive field.
B
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Here is a figure showing major body cavities and other structures. What does "B" represent?
A. Pelvic cavity B. Diaphragm C. Mediastinum D. Abdominal cavity E. Thoracic cavity
Each of the following bones contributes to the formation of the cranial base EXCEPT the
A. occipital. B. sphenoid. C. ethmoid. D. temporal. E. parietal.
A 70-year-old-man has a blockage at the origin of the infe- rior mesenteric artery. He does not have ischemic pain because of collateral arterial supply. Which of the following arteries is the most likely additional source of blood to the descending colon?
A. Left gastroepiploic B. Middle colic C. Sigmoid D. Splenic E. Superior rectal
Support, attachment of tissues, cushioning and protection are examples of functions for ______ tissue
A. nervous tissue B. connective tissue C. muscle tissue D. epithelial tissue