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Chapter 5 Respirator

Chapter 5 Respiratory System

Nose Lined with mucous membrane and fine hairs; it acts a s a filter to moisten and warm the entering air
Nasal partition separarting the right and left nasal cavities
paranasal sinuses air cavities within the cranial bones that open into the nasal cavities
pharynx serves as a food and air passageway. Air enters from the nasal cavitie and passes through the pharynx to the larynx. Food enters the pharynx from the mouth and passes into the esophagus
Adenoids lymphoid tissue located behind the nasal cavity
Tonsil lymphoid tissue located behind the mouth
larynx location of the vocal cords. Air enters from the pharynx (Also called voice box)
epiglottis flap of cartilage that automatically covers the opening of and keeps food from entering the larynx during swallowing
trachea passageway for air to the bronchi (also called the windpipe)
bronchus (pl. bronchi) one of two branches from trachea that conducts air into the lungs where it divides and subdivides. The branchings resemble a tree; therefore, they are referred to as a bronchail tree.
bronchioles smallest subdivision of the bronchial tree
alveolus (pl. alveoli) air sacs at the end of the bronchioles. Oxygen and carbon dioxide are exchanged thru the alveolar walls and the capillaries
Lungs two spongelike organs in the thoracic cavity. the right lung consistsw of three lobes, and the left lung has two lobes
Pleura double-folded serous membrane covering each lung and lining the thoracic cavity with a small space between, called the pleural cavity, which contains serous fluid
diaphragm muscular partition that separates the thoracic cavity from the abdominal cavity. it aids in the breathing process by contracting and pulling air in, then relaxing and pushing air out
mediastinum space between the lungs. It contains the heart, esophagus, trachea, great blood vessels, and other structures
Created by: 648403736



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