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10 Cards in this Set

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