Upper Respiratory
also known as the oral cavity, is the secondary external opening (after the nasal) for the respiratory tract
What is the mouth?
each of the pair of organs situated within the ribcage, consisting of elastic sacs with branching passages into which air is drawn, so that oxygen can pass into the blood and carbon dioxide be removed
What is the lung?
the two external openings of the nasal cavity that admit air to the lungs and smells to the olfactory nerves
What are the nostrils?
a large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; the windpipe.
What is the trachea?
a channel for airflow through the nose
What is the nasal passage?
a dome-shaped muscular partition that separates the thorax from the abdomen and plays a major role in breathing, as its contraction increases the volume of the thorax and so inflates the lungs
What is diaphragm?
the membrane-lined cavity behind the nose and mouth, connecting them to the esophagus
What is the pharynx?
the many tiny air sacs of the lungs which allow for rapid gaseous exchange
What are the alveoli?
the hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box
What is the larynx?
each of a pair of serous membranes lining the thorax and enveloping the lungs
What is the pleura?
a flap of cartilage behind the root of the tongue, which is depressed during swallowing to cover the opening of the windpipe
What is the epiglottis?
What are the bronchi and the bronchiole?