Which of the following statements is false?
a. The axons of ganglion cells form the optic nerves that carry information to the brain.
b. The axons of the optic nerves end in the lateral geniculate nuclei of the thalamus.
c. Integration of visual information takes place in the frontal lobes of the cerebrum.
d. Neurons in the reticular activating system are involved in visual integration.
e. The optic nerves cross to form the optic chiasm
C
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Why is cell communication considered evolutionarily ancient?
What will be an ideal response?
A technique that separates a readable pattern of DNA fragments is ________.
A. genetic engineering B. biotechnology C. recombinant DNA D. gel electrophoresis E. gene probes
Some have claimed that the herb echinacea reduces the likelihood of catching the common cold. In many hundreds of studies, this claim has been refuted. Assuming these studies were properly conducted, which of the following is a scientifically responsible claim that an echinacea advocate could make in support of further research on this subject?
a) the effective drug dosage of echinacea was outside the range of the dosages given in the scientific studies b) the investigators were paid off by the drug companies c) the effective length of time needed for taking echinacea is longer than that provided in any of the scientific studies d) all of the answer choices are correct e) only the first and third answers choices are correct
Which of the following does not occur when you are very, very cold?
A. You get goose bumps. B. The arrector pili muscles contract. C. Shivering occurs. D. Smooth muscle contracts inside the blood vessels supplying the skin. E. More blood flows to the surface of the body.