19) In mammals teeth are anchored into sockets by-- a) Enamel b) Dentin c) Pulp
ID: 270666 • Letter: 1
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19) In mammals teeth are anchored into sockets by-- a) Enamel b) Dentin c) Pulp d) Cementum e) Cartilage 20) In mammals the tongue does NOT play a role in a) Communication b) Chemoreception c) Mechanical digestion d) Swallowing c) The tongue plays a role in all of these 21) Ancestrally the stomach served for a) Digestion of carbohydrates b) Food storage and to prevent putrefaction c) Connection from the mouth to the intestines d) Lipid digestion e) Appetite stimulation 22) Inappropriate movement of food forward or backward in the digestive tract is achieved by a) Peristalsis b) Sphincters c) Rugae d) Diverticuli e) Pacinian corpuscles 23) Lubrication of food and protection of the stomach is achieved by the_ a) Cardia b) Fundus c) Body d) Pylorus e) Pyloric sphincter 24) The primary site of protein digestion in the stomach is the a) Cardia b) Fundus c) Body d) Pylorus e) Pyloric sphincterExplanation / Answer
19) d). Cementum
Sockets contain the roots of teeth. The teeth are anchored into sockets by periodontal ligament and cementum. Cementum is a hard calcified layer of tissues.
The crown of tooth in mammals is covered by thin, hard layer which is called enamel.
Dentin is a hard, thick layer which forms the bulk of tooth. It is protected by enamel.
Pulp constitutes the center of tooth. Along with dentin, it forms dentin-pulp complex. Pulp is made up of soft tissues.
20) e) Tongue plays a role in all of these
Tongue is an important organ involved in delivery of speech. It is necessary for speaking and verbal communication.
Tongue is responsible for gustation by detection of food on the basis of taste. Gustation is a part of chemoreception.
When food is broken from large pieces to small pieces physically, it is termed as mechanical digestion. Tooth and tongue, both are involved in mechanical digestion of food.
Tongue is also involved in transferring the substance from mouth to esophagus which is termed as swallowing.
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