Exam 26: Internal Organization and Homeostasis

The lack of water, otherwise known as ____________________, can lead to heatstroke.

Cooling by evaporation requires

The circulation of blood through the body eventually increases the rate of heat transfers by

Conduction is a form of convection.

Why do animals that live in cold climates have thick fur coats?

An animal can lose heat by ____________________ even when the environmental temperature is greater than its internal temperature.

The physical movement of heat that results from the movement of air or water is known as

Which of the following statements about homeostasis is false?

In our kidneys, blood gets filtered in

A breeze cools a hot, dry surface by

Having hundreds of different types of cells in the human body promotes efficiency of bodily processes.

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

For a vertebrate animal to obtain and use energy,

Despite its large size, an elephant can conserve heat energy longer than a hummingbird.

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

Capillary walls

Heat can be gained or lost by radiation.

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

____________________ tissue, the interface between an organism and its environment, regulates the amount of water, heat, and other substances that are exchanged with the external environment.

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