We can distinguish between sensations that originate in different areas of the body because
A) different sensory receptor types produce different action potential types.
B) incoming sensory information is first assessed by the thalamus.
C) sensory neurons from each body region synapse in specific brain regions.
D) sensory neurons carry only one type of information.
E) None of the answers are correct.
C) sensory neurons from each body region synapse in specific brain regions.
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The function of structures within the middle ear is to ________ and transmit sound waves to the inner ear.
Fill in the blank(s) with the appropriate word(s).
Which of the following is false regarding steroids?
A. They differ in the position of the double covalent bonds between the carbon atoms in the rings. B. They are derived from palmitate. C. They contain a variety of functional groups. D. They have three 6-carbon rings joined to one 5-carbon ring.
What would result from a lack of extracellular Ca2+ at the neuromuscular junction?
A. Synaptic vesicles would fail to fuse and ACh would not be released. B. The neuron must use its intracellular Ca2+ to make the vesicles fuse. C. Potassium ions are used in place of Ca2+ to ensure the vesicles fuse. D. Nothing would happen because extracellular Ca2+ does not play a role in muscle stimulation. E. Excessive synaptic vesicles would fuse and release too much ACh, overstimulating the myofiber.
The endocrine system secretes ____ into the blood to be transported to their target cells.
Fill in the blank(s) with the appropriate word(s).