Exam 28: Temperature and Body Fluid Regulation

A physiological state that allows certain mammals to survive long periods of elevated temperature and diminished water supplies is

__________ allowed some animals to invade habitats denied to forms that could not regulate internal temperature.

__________ are energy-requiring devices that expel excess water from single cells exposed to hypotonic environments.

Which of the following systems is NOT usually involved in thermoregulation?

The brown color of brown fat comes from the large number of __________ with their iron-containing cytochromes.

Which of the following is NOT a mechanism of thermogenesis in birds and mammals?

Animals that can maintain a constant body temperature are called

Among vertebrates,__________ are examples of endotherms.

Flame cell systems function primarily in

The generation of heat by shivering is called

The excretory system of insects is composed of

Most reptiles are almost completely ectothermic; they warm themselves by

Freshwater fish pass a urine with a concentration that is ________________ relative to their blood.

The __________ concentration of a marine vertebrate is about one-third less than that of the surrounding seawater.

The paired,tubular excretory structures of annelids are called

Which of the following would NOT be a way for a freshwater teleost fish to maintain osmotic balance?

In addition to ammonia,freshwater teleost fish kidneys excrete large amounts of

Sharks have __________ glands that secrete a highly concentrated salt solution.

Invertebrates that have low metabolic rates and no thermoregulatory mechanisms are known as

In addition to the usual problems of being ectothermic,amphibians have wet skins and suffer from __________ cooling.