DIGESTIVE SYSTEM

• Mechanical digestion - involves physically breaking down food substances into smaller pieces to more effeciently undergo chemical digestion
• the process of digestion are:

  • ingestion
  • propulsion
  • digestion
  • absorbtion
  • assimilation
  • excretion
• teeth - help you bite, tear and grind food up before swallowing it.
• saliva- they lubricate your mouth and throat, aid in swallowing and digestion
• what is this called?

  mouth or oral cavity

  A) teeth

  B) hard plate

  C) soft plate

  D) uvula

  E) tonsils

  F) tongue

  G) lip

  H) gums

  
• throat or pharynx

  A) nasal cavity

  B) nasopharynx

  C) oropharynx

  D) hypopharynx

  E) trachea

  F) oral cavity

  G) larnyx

  
• propulsion - the act of swallowing food is a voluntary type of propulsion
• absorbtion - is the primary function of the small intestine happens when nutrients that come from the digested food
• assimilation - the process of building up complex substances
• excretion - happens when body expels waste product from the digestion through the rectum and anus
• salivary glans - saliva moistens and lubricates food
• larynx or voice box - it protects the lower respiratory tract from aspiring food into the trachea while breathing.
• esophagus or gullet - it carries and transport food
• stomach - is a J-shaped mascular organ that digest foods
• small intestine or small bowel - absorb the most nutrients in your food
• large intestine or colon - it get rid of any waste products left over
• fatty acids - energy storage, insulate us and protects our vital organs
• proteins - acts as enzymes, hormones, maintain fluid, acid base balances, provide nutrients, makes antibodies.
• minerals - building strong bones and teeth, controls body fluids inside and outside cell, turning food into energy
• rectum - stores faeces and waste products from the small intestine
• anus - is the last part of the digestive tract