where in the respiratory system does gas exchange occur

the role of the respiratory system is to bring what substance into the body

during gas exchange which substance moves from the alveoli into the blood.

the domed shaped muscle that plays an important role in breathing is the,

what happens to cause air to be exhaled from the lungs.

Which chemical in tobacco smoke binds to hemoglobin, causing red blood cells to carry less than their normal load of oxygen?

Which chemical in tobacco smoke is an addictive drug?

Over time, smoking can irritate the breathing passages, which may become clogged with mucus. This condition is called

A tumor that develops in the lungs may be a sign of

What is the main function of the excretory system?

Which organ of the excretory system stores urine until the body is ready to eliminate it?

Tiny filtering structures where urine is produced in the kidneys are called

Under normal conditions, which of the following substances is found in urine?

In which excretory organ is urea produced?

Which excretory organ eliminates water and some chemical wastes in perspiration?

What term do scientists use to describe the chemical process in which oxygen and glucose react to release energy inside body cells?

Which chemical in tobacco smoke may damage cilia in the respiratory system?

How can smoking lead to emphysema?

What is the name of the small flap of tissue that seals off the trachea during swallowing?

Which parts of the respiratory system divide into smaller and smaller tubes in a pattern that resembles the branches of a tree.

What functions do the kidneys perform

Hairlike structures that line the nasal cavities and trachea are called

Each alveolus is surrounded by a network of

What produces a persons voice

The vocal cords stretch across the opening of the

What does nicotine do to the body

The process of removal of the bodies waste is called

Organs of excretion that maintain homeostasis include the kidneys lungs skin and

The respiratory system removes oxygen and water from the body

Oxygen and carbon dioxide are exchanged in Capillaries that surround tiny Sacs called bronchi

In gas exchange, oxygen passes from the alveoli into the blood.

One reason that nicotine is harmful is that it speeds up heart activity.

Breathing passages become narrower in the disease called emphysema.

The amount of water in the kidney depends on conditions inside and outside the body

During the reabsorbing process in the nephron, glucose is normally left in the tube.

Urine passes out of the body through a tube called the ureter

When the diaphragm contracts, air pressure in the chest increases.

The dark, sticky substance that forms when tobacco burns is called addiction

The dark, sticky substance that forms when tobacco burns is called addiction