Pharynx has three regions
Nasopharynx posterior to the nasal cavity
Oropharynx lies posterior to the oral cavity
Nasopharynx blends into the oropharynx
Oropharynx is a common passageway for food and air
Laryngopharynx is a common passageway for food and air
Larynx known as voice box
Larynx continues into the trachea
Larynx provides an open airway
Larynx routes food and water
Larynx houses the vocal cords
Epiglottis is made of elastic cartilage
Epiglottis covers the larynx when swallowing
Epiglottis remains open
Trachea is the windpipe
Trachea descends from the larynx
Primary bronchi extend from the trachea
Three secondary bronchi on right
Two secondary bronchi on left
Bronchioles are less than 1 millimeter
Terminal bronchioles are the tiniest at 0.5mm in diameter
Bronchioles lead in the alveoli ducts
Alveolar ducts lead to alveolar sacs
Alveolar sacs look like bunches of grapes
There are hundreds of millions alveoli
The left lung is smaller than the right
A notch is on the left side where the heart fits into
The pleura is double layered
The pleura produces a lubricating fluid to decrease friction with the lungs
Right lung has three lobes
Left lung has two lobes
Nasopharynx only serves as an airway
Visceral pleura is superficial to the lungs
Parietal pleura is the outer layer that connects to the outside of the lungs
Parietal pleura connects to thoracic wall, mediastinum, diaphragm
Pleural cavity is the space between the visceral and parietal layers
Pleurae produces fluid and separates major organs
Epiglottis prevents food from entering the trachea
Epiglottis closes during swallowing
Epiglottis is made of cartilage
Trachea is flexible
Aorta
Endocardium
Left Coronary Artery
Left Atrium
Descending Aorta
Pericardium
Pulmonary Valve
Purkinje Fibers
Aortic Arch
Ascending Aorta
Right Coronary Artery
Left Ventricle
Epicardium
Right Atrium
Myocardium
Pulmonary Artery
Right Ventricle
Sinoatrial Node
Tricuspid Valve
Mitral Valve
Aortic Valve