License Image Air enters through the nose and mouth and passes through the pharynx into the larynx (where the vocal cords are located). Food entering the mouth also passes through the pharynx. It is prevented from entering the lungs by the epiglottis, which folds down over the larynx when swallowing. From the larynx air enters […]
Respiratory
Diaphragm and Phrenic Nerve
License Image The diaphragm is a large dome shaped muscle that separates the chest and abdominal cavities. The lower edge of the diaphragm is attached to the inner surface of ribs 6 through 12, the xiphoid process of the sternum and the upper 2 or 3 lumbar vertebrae (L1, L2, L3). The muscles of the […]
