Special Sub-Topic: The Mouth and Digestion
|Which of these is part of digestion?|
All of these (Ingestion, Absorption, Egestion). The digestive system works along with the endocrine and immune system; The endocrine system has a lot of cells in the stomach and intestines and the immune system regulates the gut associated lymphoid tissue also known as GALT.
|How many pairs of salivary glands does the human body have?|
Three. There are three pairs: one pair is located in front of the cheeks, another pair is located in the front angle of the jaw, and the last pair one is located under the tongue.
|After the watery saliva dissolves the food, the food is then stuck together with mucoid made by the salivary glands. What is the ball of food called?|
Bolus. The body produces 1000 to 1500 milliliters of saliva a day. Ninety-five percent of saliva is water.
|When food enters the mouth, the amount of saliva is the same as it was without food in the mouth. |
f. The amount of saliva increases because a response is initiated by chemoreceptors and pressoreceptors in the wall of the mouth and on the tongue.
|Which of these palates prevent food from entering the nasal cavity?|
Soft Palate. While swallowing, the soft palate blocks the nasal passage, the epiglottis covers the glottis and trachea which lead to the lungs, and the tongue moves up and blocks the front of the mouth.
|The tongue has skeletal muscles that are labeled extrinsic and intrinsic. How does the extrinsic muscle help the tongue during digestion?|
It moves the tongue from side to side and in and out.. The intrinsic muscles alter the shape and size during speech and swallowing.
|The tongue has four taste zones. Where is the bitter zone located?|
On the back of the tongue. The sour zone of the tongue is located on the sides of the back of the tongue, the salty zone is located on the sides of the front of the tongue, and the sweet zone is located on the front of the tongue.
|The lifespan of a tastebud is one year. |
f. The lifespan of a tastebud is ten days! Tastebuds are not only located on the tongue; Some are found under the tongue, on the insides of the cheeks, and on the roof of the mouth.
|Which of the following is broken down in the mouth?|
Carbohydrates. Saliva contains an enzyme called amylase that breaks down carbohydrates.
|Which of these words means "chewing"?|
Mastication. Eradication means to tear up or completely destroy and nullification means having no legal force.
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