Respiratory System Flashcards
Within the nasal passage, outcroppings of bone from the lateral divide the main passageway into smaller ones. These outcroppings are called________
Nasal conchae
What happens to air in the nasal conchae
It circulates around these ridges and becomes warm and moist before entering the lungs.
Air- filled spaces between several of the bones of the skull, called ________
Sinuses
What part of the throat serves both the digestive and respiratory system?
Pharynx
_____ and _____ along the walls of the sinuses moisten and warm incoming air, and also trap foreign microorganisms and debris in the air
Cilia, mucus
The ______ guards entry to the larynx from the pharynx
Epiglottis
Several plates of _____ make up the larynx walls.
Cartilage
Continuous with the larynx is the _______, also known as the windpipe.
Trachea
The trachea extends in front of the _____ into the ______ cavity, then splits to form 2 passageways called _______
Esophagus, thoracic, bronchi
Each bronchus continues as a _____ ______. _________ rings hold the tubes open for most of their length.
Bronchial tree, cartilage
Bronchial tubes are composed of cartilage rings and _________
Smooth muscle
The right and left bronchial trees lead to smaller ______ _______, then to the _____ sacs of the lungs.
Alveolar ducts, air
The main area of gas exchange in the body is in the
Lungs
Lungs are separated from each other by the ______ and a central area of the thorax called the _______
Heart, mediastinum
The expansion of the lungs depends heavily on the contraction of the large dome shaped muscle called ______
The diaphragm