Ch. 5 Human Body

Which organ produces bile to aid in digestion of fats?

The respiratory system is important because it brings ____________ into your body?

Substance derived from protein, removed from the blood in the kidneys and excreted in urine?

How does your body get energy?

Enzymes aid in __________digestion of food.

Blood needs ___ to clot.

Which two systems work together to collect wastes from cells and remove them?

Urea, excess water, and other waste are eliminated in a watery fluid called ____?

Major organ of excretory system; removes urea and other wastes from the blood

In the large intestine _______takes place

What vessel takes the blood from the heart to all parts of the body?

Blood returns to the heart from the body through blood vessels called ____?

This muscles contracts/relaxes to change size of chest caivity

55% of the blood is _________?

The most important nutrient in the body for all cell processes is

Another name for the windpipe is ____?

The idependent variable is _____________

energy in food is measured in units called

Muscle contractions called  ______ help move food through the esophagus.

Filtering structure in kidneys that removes waste from blood and produces urine

In these vessels materials are exchanged between the blood and the body cells

The dependent variable is _______

The tiny sacs attached to bronchi where gases are exchanged

Where does digestion begin?

the smallest level of organization in living things

Why does the heart beat faster when you exercise?

These structures increase the area of absorption in the small intestine

White blood cells differ from red blood cells in that they?