Tongue.
~All areas of the tongue detect taste.
~The top of the tongue is covered with small bumps called papillae. (They contain the taste buds).
~Posterior portion of the tongue is called the 'Root' and is anchored to the hyoid bone.
~Everyone starts with about 10,000 taste buds.
~The taste buds can detect sweet, sour, bitter, and salty tastes.
~Microvilli are microscopic hairs that send messages to the brain and interprets signals and identifies taste.
~The top of the tongue is covered with small bumps called papillae. (They contain the taste buds).
~Posterior portion of the tongue is called the 'Root' and is anchored to the hyoid bone.
~Everyone starts with about 10,000 taste buds.
~The taste buds can detect sweet, sour, bitter, and salty tastes.
~Microvilli are microscopic hairs that send messages to the brain and interprets signals and identifies taste.
Palate.
Roof of mouth. The hard palate is located anteriorly and the soft palate is located posteriorly.
Swallowing.
Muscles draw the solft palate and uvula upward which closes off nasal cavity.
Tonsils.
Palatine and phayngeal are tbe two types of tonsils.
Teeth.
~Hardest structure in the body and are not considered bone.
~Two sets:
Primary- Bewteen 6 months and 2-4 years.
Secondary- Push primary out of socket. There is a total of 32 secondary teeth.
~They mechanically break down food particles which allow digestive enzymes to interpret more efficiently wiht nutrient molecules.
~Two sets:
Primary- Bewteen 6 months and 2-4 years.
Secondary- Push primary out of socket. There is a total of 32 secondary teeth.
~They mechanically break down food particles which allow digestive enzymes to interpret more efficiently wiht nutrient molecules.
Types of Teeth.
Incisors- Chisel shaped and are used to bite off large pieces of food.
Canine- Cone shaped; grasp and tear food.
Biscupid (Premolar) & Molar- Flat surfaces, used to grind food.
Canine- Cone shaped; grasp and tear food.
Biscupid (Premolar) & Molar- Flat surfaces, used to grind food.
Teeth Terms.
Crown- Projection above the gum.
Root- Anchor into the jaw.
Neck- Where the crown and root meet.
Enamel- Consists of calcium salts, hardest substance in the body and can not be repaired if they are damaged.
Dentin- Similar to bone, but harder. They make up the bulk of the tooth.
Pullp Cavity- Contains blood vessels, nerves, and connective tissue (pulp).
Root Canal- Passage where blood vessels travel into the root.
Cementum & Periodontal Ligament- Hold the tooth in place on the jaw.
Root- Anchor into the jaw.
Neck- Where the crown and root meet.
Enamel- Consists of calcium salts, hardest substance in the body and can not be repaired if they are damaged.
Dentin- Similar to bone, but harder. They make up the bulk of the tooth.
Pullp Cavity- Contains blood vessels, nerves, and connective tissue (pulp).
Root Canal- Passage where blood vessels travel into the root.
Cementum & Periodontal Ligament- Hold the tooth in place on the jaw.
Pharynx.
~Connects nasal and oral cavities with larynx and esophagus. It contains three
parts.
1) Naspharynx- Above the soft palate.
2) Oropharynx- Posterior to the mouth and the soft palate.
3) Laryngopharynx- Infereior to oropharynx.
parts.
1) Naspharynx- Above the soft palate.
2) Oropharynx- Posterior to the mouth and the soft palate.
3) Laryngopharynx- Infereior to oropharynx.