Respiratory and Circulatory Sytem

______ this structure is also called the oral cavity. It is the opening through which air, food, and drink enter the body.

• Lungs

• Mouth

• Nose

______ also know me as the nasal cavity, this is the opening through which air enters the body. It contains hair to help trap foreign particles and keep them from entering the lungs.

• Mouth

• Pharynx

• Nose

_____ this is the passageway that connects the nose to the larynx.

• Pharynx

• Diaphragm

• Lungs

____ this structure is also called the voice box because it contains vocal cords that help produce the sounds made when we speak. It is also the passageway from the pharynx to the trachea.

• Trachea

• Larynx

• Lungs

_____ this is the large, relatively thin muscle that sits at the base of the lungs. It separates the thoracic cavity from the abdominal cavity and functions in inhaling and exhaling.

• Trachea

• Intercostal muscles

• Diaphragm

_____ these are the muscles located between the ribs that help to move the chest cavity inhalation and exhalation.

• Intercostal muscles

• Diaphragm

• Trachea

_____ these are the structures that carry out the majority of the function of the pulmonary system by bringing oxygen into the blood. There are three lobes to the right lung and two lobes to the left lung. The left lung has fewer lobes to allow space for the heart in the body. The lungs contain structures that actually perform the air exchange.

• Lungs

• Trachea

• Diaphragm

______ a thin broad muscle that sits below your lungs. When it contracts, it flattens out and creates space in the lungs so they can fill with air. When you breathe out, the diaphragm relaxes and pushes the stale air, including that waste carbon dioxide, out of your lungs.

• Nose

• Lung

• Diaphragm

_____ this structure is commonly called the windpipe. It is the large passageway for air into and out of the lungs.

• Trachea

• Larynx

• Pharynx

_____ the bronchi are the main passageways from the trachea to the lungs. One bronchus goes to each lung.

• Bronchioles

• Bronchi

• Circulation