When the arrector pili muscles contract
A. the body is able to lose heat.
B. no change is noted on the skin surface.
C. the hair on your arms and legs begins to curl.
D. the sweat glands empty their contents onto the surface of the skin.
E. "goose bumps" form on the skin.
E
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Which of the following occurs in the stratum granulosum?
A. The keratinocytes undergo apoptosis. B. Keratinocytes are produced through the process of mitosis. C. Melanocytes produce melanin. D. The keratinocytes flake off the surface of the skin. E. The cells produce more keratin filaments that cause the cells to flatten.
Which of the following is the correct neural pathway for hearing?
A. Vestibulocochlear nerve, thalamus, inferior colliculus, medulla oblongata, temporal lobe B. Vestibulocochlear nerve, inferior colliculus, medulla oblongata, thalamus, temporal lobe C. Vestibulocochlear nerve, medulla oblongata, inferior colliculus, thalamus, temporal lobe D. None of the choices are correct.
The "ABCD rule" for recognizing early signs of malignant melanoma refers to the following characteristics of the lesion:
A. aspect, border irregularity, color, and distance. B. aspect, brightness, color, and distance. C. area, border irregularity, color, and density. D. asymmetry, border irregularity, color, and diameter. E. asymmetry, brightness, color, and diameter.
Which of the following statements is NOT part of the cell theory?
A) The activities of cells are determined by their structure, which determines function. B) The human body is composed of 50 to 100 trillion cells. C) Cells are the basic structural and functional unit of living organisms. D) The activity of an organism depends on its collective cellular activities. E) The continuity of life has a cellular basis.