Modern Biology Chapter 48: Regulating the Internal Environment

Homeostatic Control Systems

Osmoregulation is the?

Regulation of Water and Ion Balance

Excretions helps maintain the?

Body’s water and ion balance while ridding body of metabolic wastes

Thermoregulation is the?

Control of Body Temperatures

What can we take away from this image about Living Cells?

Living Cells contain water, are surrounded by water, and constantly exchange water with their environment

For the Simplest Animals, they will have what?, for the more Complex animals, they will have what?

For simple: Water of external environment directly surround cells
For complex: Aqueous ECF surrounds the cells

In animals with a circulatory system, the

ECF includes both interstitial fluid and blood plasma

In Osmosis, water molecules will diffuse across a

Selectively permeable membrane from region of higehr water concentration to region of lower water concentration