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10 Cards in this Set
- Front
- Back
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Describe the distribution of sweat glands on mammals.
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Broadly distributed over the surface of the body, but usually are more restricted. Some species have them only on the feet (foot pads) or venter (belly).
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Function of sweat glands.
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Evaporation of sweat from the surface of the skin helps to prevent overheating.
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Name 2 categories of sweat glands.
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Eccrine & apocrine.
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Define Eccrine glands. What type of sweat is excreted from these glands?
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Ducts that open at the surface of the skin. Most common type. Salt, urea, other wastes.
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Define Apocrine glands.
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Ducts that open into hair follicles. Salt, urea, other wastes, plus fatty acids & proteins.
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What causes body oder?
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As bacteria on the skin decompose the organic components from sweat of apocrine glands creats an odor that intensifies.
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Describe scent glands of mammals.
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DOS scent glands are either modified sweat glands or are modified sebaceous glands.
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What is a pheromone?
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A chemical signal that elicits a response from a member of the same species.
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How are pheromones produced and what are some of their functions?
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By the sweat glands. Mark territorial boundaries, attract mates, recognition of members of social groups or mark a trail to return to the nest.
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What is an allomone? What is an example?
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A chemical signal that serves as a message to a member of a different speices. Skunks.
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