Enter Ch. 7.10 key terms

Ch. 7.10 key terms

100

Alveoli

•  Tiny, grape-like air sacs in the lungs where the exchange of oxygen and carbon dioxide between the air and blood in the capillaries occurs.

200

Epiglottis

A leaf-shaped flap of cartilage located in the throat that covers the opening of the larynx (voice box) during swallowing, preventing food and liquids from entering the trachea and lungs.

300

Larynx

• Commonly known as the voice box, an organ in the neck that is involved in sound production (housing the vocal cords), respiration, and protecting the trachea from food aspiration.

400

Pleura

• The two membranes (visceral and parietal) that surround each lung lobe and line the inner surface of the thoracic cavity, separating the lungs from the chest wall.

500

Ventilation

• The physical process of moving air in and out of the lungs; also referred to as breathing

Ch. 7.10 key terms

100

Bronchi

• The two main tubes that branch off from the trachea (windpipe) and carry air into the right and left lungs; they further divide into smaller and smaller passages.

200

Expiration

• The process of breathing out, where air is released from the lungs to the atmosphere; also known as exhalation.

300

Lungs

• A pair of organs in the chest cavity, enclosed by the pleurae, that are the primary site of gas exchange for the body, bringing in oxygen and expelling carbon dioxide.

400

Respiration

The overall process of exchanging oxygen and carbon dioxide, which includes ventilation (breathing), external respiration, internal respiration, and cellular respiration

Ch. 7.10 key terms

100

Bronchioles

• Smaller, muscular branches of the bronchi that lack cartilage and lead to the alveoli.

200

External respiration

•  The exchange of gases (oxygen and carbon dioxide) between the air in the alveoli of the lungs and the blood in the pulmonary capillaries.

300

Nasal cavities

 Air-filled spaces behind the nose that help warm, moisten, and filter incoming air before it travels to the lower respiratory system.

400

Respiratory system

•  The organs and structures (airway, lungs, and muscles of respiration) that allow the body to breathe in oxygen, breathe out carbon dioxide, and perform gas exchange.

Ch. 7.10 key terms

100

Cellular respiration

• : The metabolic process within cells that uses oxygen to break down biological fuels (like glucose) to produce adenosine triphosphate (ATP), which is the body's main source of energy, and releases carbon dioxide as a waste product.

200

Inspiration

The process of breathing in, where air is moved into the lungs; also known as inhalation.

300

Nasal septum

• The wall made of cartilage and bone that separates the left and right nasal cavities.

400

Sinuses

• Air-filled cavities located within the bones of the skull and face, connected to the nasal cavities; they help to lighten the skull, warm and humidify inhaled air, and contribute to voice resonance.

Ch. 7.10 key terms

100

Cilia

• Tiny, hair-like structures that line the bronchial tubes and other parts of the respiratory tract; their wave-like motion sweeps mucus, dust, and germs upward and out of the lungs.

200

Internal respiration

Internal respiration: The exchange of gases between the blood in the systemic capillaries and the tissue cells throughout the body.

300

Pharynx

• Commonly known as the throat, it is a passageway that connects the nasal and oral cavities to the larynx and esophagus, serving as a route for both air and food.

400

Trachea

• Commonly known as the windpipe, a tube reinforced by C-shaped cartilage rings that connects the larynx to the bronchi, providing a passageway for air to enter the lungs.