DIGESTIVE SYSTEM
TEETH
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Hard bone-like tissue outlining roots
|
|
|
hard yellow tissue under enamel and cementum; protects pulp and nerves
|
|
|
Center of the tooth, mainly under area of crown/canals of root that nerves and blood vessels run through
|
|
|
Forms the tooth socket and is the main structural support of tooth
|
Detailed explanation-1: -Dentin. That part of the tooth that is beneath enamel and cementum. It contains microscopic tubules (small hollow tubes or canals). When dentin loses its protective covering (enamel), the tubules allow heat and cold or acidic or sticky foods to stimulate the nerves and cells inside the tooth, causing sensitivity.
Detailed explanation-2: -Enamel. Hard calcified tissue covering the dentin in the crown of tooth. Because it contains no living cells, tooth enamel cannot repair damage from decay or from wear.
Detailed explanation-3: -Dentin surrounds the pulp. A hard yellow substance, it makes up most of the tooth and is as hard as bone. It’s the dentin that gives teeth their yellowish tint. Enamel, the hardest tissue in the body, covers the dentin and forms the outermost layer of the crown.
Detailed explanation-4: -Enamel is on the surface of every tooth and it has a natural hue of white. However, the underlying dentin layer has a slightly yellowish color. This yellowish hue shows through the enamel in almost everyone, but more so for those with naturally thinner or more translucent enamel.