ANAT 261 Lecture Notes - Dental Papilla, Apoptosis, Dental Lamina

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As we said before, the gingiva (which are your gums) are made of a stratified squamous parakeratinized epithelium. The parakeratin allows the gingiva to be tough, but still be moist. The toughness helps your gums hold up to constant abrasion while the moistness lubricates the food and your mouth. The first step of digestion is the mouth, where food gets mashed up by the teeth into small fragments which can be easily broken down. Amylase, which is secreted into saliva, starts digestion of carbohydrates. Humans have 2 sets of teeth, consisting of two dental arches (upper and lower) The upper arch is known as the maxillary arch while the power arch is known as the mandibular arch. Each arch can be divided into quadrants, left and right. These quadrants are mirror images of each other. Babies have deciduous dentition (baby teeth) consisting of 20 teeth and adults have permanent dentition consisting of 32 teeth.

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