Your Lungs & Respiratory System

What happens during exhalation?

• The diaphragm moves down, and the chest wall muscles contract, making the chest cavity larger and pulling air in.

• The diaphragm moves up, and the chest wall muscles relax, making the chest cavity smaller and pushing air out.

• The diaphragm remains still, and the chest wall muscles tighten, preventing air from leaving the lungs.

• The diaphragm moves sideways, and the chest wall muscles expand, allowing more air to enter.

What do the lungs and respiratory system do?

• They allow us to breathe by bringing oxygen into our bodies and sending carbon dioxide out.

• They help in digestion by breaking down food.

• They circulate blood throughout the body.

• They filter toxins from the bloodstream.

What is the epiglottis?

• A flap of tissue that covers the air passage when swallowing to prevent food from entering the lungs.

• A muscle that helps in the movement of the tongue.

• A type of cartilage found in the ear.

• A gland that produces saliva.

What is the pharynx?

• A part of both the digestive and respiratory systems that carries food and air.

• A muscle that helps in swallowing food only.

• An organ responsible for producing sound.

• A tube that connects the stomach to the mouth.

What is the esophagus?

• A tube that carries food to the stomach.

• A muscle that helps in breathing.

• An organ that produces bile.

• A part of the small intestine.

What is the thorax?

• The abdominal cavity that contains the stomach and intestines.

• The chest cavity that houses the bronchial tree, lungs, heart, and other structures.

• The area of the body that includes the head and neck.

• The lower part of the body that contains the pelvis and legs.

How do the lungs work when you breathe in?

• The diaphragm moves down, and the rib muscles pull the ribs up and out, making the chest cavity bigger and pulling air into the lungs.

• The diaphragm relaxes, and the rib muscles push the ribs down and in, reducing the chest cavity and pushing air out of the lungs.

• The diaphragm remains still, and the rib muscles contract, causing the chest cavity to stay the same size while air is forced into the lungs.

• The diaphragm moves up, and the rib muscles pull the ribs down and in, creating a vacuum that draws air into the lungs.

What are alveoli?

• Tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged.

• Large tubes that carry air to the lungs.

• Muscles that help in the expansion of the lungs.

• Cells that produce mucus in the respiratory system.

What is the pleura?

• A thin lining that covers the lungs.

• A type of lung disease.

• A muscle that aids in breathing.

• A part of the heart.

What is the trachea?

• A muscle that helps in breathing

• Also known as the windpipe, it is a tube that carries air to the bronchi and is kept open by rings of cartilage.

• A part of the digestive system that processes food

• A small air sac in the lungs where gas exchange occurs.