Exam 20: Maintaining the Internal Environment

Individual cells that are deeply embedded in a large animal are surrounded by _________, which provides nutrients, delivers hormones, and carryies away wastes.

Which of the following statements about temperature regulation is false?

Conduction is a form of convection.

Which of the following would be the best way to avoid heatstroke on a very hot day?

Animals can gain, but not lose, heat by conduction.

The figure below illustrates how the nephron in a human kidney aids in the removal of toxic by-products of protein metabolism and assists in the regulation of internal water and solute concentrations. In the region of the nephron labeled "tubule," sodium is

Which of the following is not a function of kidneys?

Animals can gain or lose heat by conduction and radiation, but the process of ___________ only results in heat loss.

An animal that does not maintain a relatively constant core temperature is a(n) _________.

After about an hour of basking in the sun, the body temperature of the marine iguana reaches 37°C and they dive into the water to feed. In the water, their body temperature rapidly drops and they must return to the rocks to warm up. This is an example of

Frostbitten tissue, because water within cells freezes, expands, and ruptures plasma membranes.

In order to help circulate heat gained from the environment while basking, marine iguanas

In a nephron the filtrate is derived from blood plasma.

Most marine animals and all land animals are ____________ because they maintain internal salt and water levels that are not the same as those of their surroundings.

In our kidneys, blood gets filtered in

To maintain homeostasis of its body fluids, a frog in freshwater would have to

In order to maintain constant internal conditions, an animal

Negative feedback

An iguana swimming in water colder than its body temperature

A turtle lying on a warm rock on a sunny day is gaining heat from the sun by radiation and heat from the rock by _____________.