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
The thoracic cage are comprised of _____, ____ and ______.
Ribs, sternum, and clavicles.
Area at the back of the throat where the mouth and nasal cavity meet
Pharynx
The trachea divides into these right and left branches
Bronchi
Contains vocal chords
Larynx
Tiny air sacs where the exchange of gases between air and blood takes place
Alveoli
Flat sheet of muscle separating the chest cavity from the abdominal cavity
Diaphragm
Inflammation of the lining of bronchial tubes
Bronchitis
Smaller branches of the bronchi
Bronchioles
Flap of tissue which prevents food from entering windpipe during swallowing
Epiglottis