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Chapter 5 Respirator
Chapter 5 Respiratory System
Question | Answer |
---|---|
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 |