digestive system grade 8

• complete set of teeth is approximately

  32
• this is where food is held

  lips and cheeks
• what is palate


  the oral cavitys upper boundary
• these are found at the front of the mouth and used to cut food into smaller pieces

  incisors
• located immediately after the incisors

  canines
• has a flat surface and are responsible for tearing and crushing

  premolars
• these also have a flat surface and are meant for chewing grinding and crushing it is the largest tooth

  molars
• what is connected at the end of the esophagus

  stomach
• the inner walls of stomach are called?


  rugae
• the beggining of cardia

  cardiac sphincter
• the end of the pylorus

  pyloric sphincter
• leading from the pyloric sphincter is the


  small intestine
• it is a 20 feet long tube where the process of digestion ends


  small intestine
• the final organ of the gastrointestinal tract it is only 3 feet long

  large intestine
• what is the role of the salivary glands?


  to secrete saliva into the oral cavity
• it is the second largest organ and is below the diaphram

  liver
• the main components of the digestive system are

  the mouth or oral cavity the gastrointestinal tract and then the acessory organs
• physical breakdowqn of food

  mechanical digestion
• the breaking down of food into smaller pieices through chemical reaction

  chemical digwstion\
• it is where bile is stored

  gallbladder
• finger like projections which vover the walls of the intestibes

  villi
• it is the process wherein there is a rippling

  peristalsis
• mixing of food with digestive juices

  churing
• these are tiny blood vessels that absorb water soluble nutrients

  capillaries
• maxillary teth is the blank portion of the teeth 


  maxillary teeth
• the lower portion of the teeth

  mandibular teeth
• this is found in the throat behind the tounge

  epiglottis
• taking food id the mouth is called what process

  ingestion
• it is the act of swallowing 


  propulsion
• it is the proces after propulsion


  digestion
• it is the process when the nutrients are absorbed and transported into the bloodstream

  absorption
• the process of builing up of complex substances after absorption

  assimilation
• feces is formed upon


  excretion