chew
Definition: Grind food with your teeth. (2) metaphor for things repeatedly understand its meaning, meaning.
Source: Michael) Although he is carrying a handful of firewood on his shoulder, he is holding a book in his hand, chewing while reciting and singing. -Feng Ming magnum "Yu Ming Yan"
Physiology: Chewing is a complex reflex activity, which consists of continuous contraction of masticatory muscles. The contraction of masticatory muscles makes the mandible move up and down, left and right, back and forth, and makes the upper and lower dentition contact each other, cutting and grinding large pieces of food. The contraction of buccal muscle and lingual muscle can put food between upper and lower dentition, which is convenient for chewing. Coupled with the agitation of the tongue, food and saliva are fully mixed to form a food ball, which is convenient for swallowing and beneficial to chemical digestion.
Concept of medical terms: The oral cavity processes food mechanically by chewing. Chewing is a complex reflex action composed of orderly contraction of masticatory muscles. Masticatory muscles include masseter muscle, medial pterygoid muscle, lateral pterygoid muscle and temporal muscle. Their contraction can make the mandible move up and down, left and right, back and forth. At this time, the upper dentition and the lower dentition contact each other, which can produce great pressure to grind food. Chewing also makes food and saliva fully mixed to form food balls, which are easy to swallow.
The lovely panda chewed the food carefully, which made the tourists laugh.