HISTOLOGY
DIGESTIVE SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
teeth
|
|
|
saliva
|
|
|
smooth muscles
|
|
|
gastric juices (HCl acid)
|
Detailed explanation-1: -Mechanical digestion in the oral cavity consists of grinding of food into smaller pieces by the teeth, a process called mastication. Chemical digestion in the mouth is minor but consists of salivary amylase (ptyalin, or alpha-amylase) and lingual lipase, both contained in the saliva.
Detailed explanation-2: -The teeth aid in mechanical digestion by masticating (chewing) food. Mastication permits easier deglutition (swallowing) and faster chemical breakdown in the digestive tract. During mastication, salivary glands secrete saliva to soften the food into a bolus (semi-solid lump).
Detailed explanation-3: -Answer and Explanation: An example of mechanical digestion inside the mouth is chewing. Mechanical digestion is the process of breaking food down into smaller pieces using physical means, like biting, mashing or tearing.