Digestive Anatomy
Wednesday, January 6th, 2010The digestive system is the set of components that provide digestion. It includes the hollow organs (mouth, part of the pharynx, esophagus, stomach, small intestine, large intestine says the colon) and solid organ annexes to the digestive tract (salivary glands, liver the pancreas).
Mouth.
It opens anteriorly by the buccal cavity, bounded by two lips (upper and lower). Inside it is limited by the high roof of the mouth, below the floor of the mouth and laterally by the cheeks. It communicates posteriorly with the pharynx. It is fully lined with a mucous membrane and contains the tongue and teeth.
Language.
It is a fleshy body and mobile. It has a skeleton that is the hyoid bone and muscles that have a role in mastication. It has a role in swallowing and phonation. It is coated with a rough mucosa and it contains the sensory receptors of the gustatory apparatus. The lingual mucosa is characterized by the presence of papillae (goblet, filiform and fungiform). The tongue is innervated by the hypoglossal nerve, motor, and lingual sensory (trigeminal branch).:
The vascularity is ensured by the lingual artery, a branch of the external carotid artery. The blood off again by the lingual veins. (more…)