When a person is exposed to painfully cold temperatures, why do the fingertips, toes, nose, and ear pinnae often respond to the pain before other body regions?
A) Their greater surface area to volume ratio causes them to lose heat faster.
B) Their thermoreceptors have a lower threshold of sensitivity to cold.
C) These are the only regions of the body with receptors for cold.
D) All of the answers are correct.
E) None of the answers are correct.
A) Their greater surface area to volume ratio causes them to lose heat faster.
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The __________ are the central incisors of equine
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Diseases may arise when proteins fail to fold correctly in their last stages of processing and/or are directed towards the lysosome rather than towards the cell membrane. Cystic fibrosis is an example of this type of disease. In cystic fibrosis, a functional ion channel is sent to the lysosome for destruction rather than being sent to the plasma membrane. Given this observation, the cellular component that is most likely the cause of the disease is the ________.
A)Peroxisomes B)Golgi apparatus C)Ribosomes D)Lysosomes
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A. Aorta and pulmonary veins B. Aorta and vena cavae C. Venae cavae and pulmonary arteries D. Pulmonary veins and pulmonary arteries E. Pulmonary veins and vena cavae