SCIENCE PA

• the process of taking food, drink, or another substance into the body by swallowing or absorbing it.

  Ingestion
• the process by which the products of digestion are absorbed by the blood to be supplied by the rest of the body

  absorption
• something excreted. Especially: metabolic waste products (such as urea and carbon dioxide) that are eliminated from the body.

  excretion
• The Ailmentary Canal


  Esophagus

  Stomach

  Small Intestine

  Large Intestine
• Accessory Organs


  Liver

  Pancreas
• a type of digestion that involves cutting, crushing, grinding.

  mechanical digestion
• a type of digestion that involve the action of enzymes

  chemical
• are responsible for mastication.

  teeth
• a long, muscular structure that perceives taste. It has rough surfaces called papillae where taste buds are found.

  tongue
• the substance secreted by the salivary glands. It moistens food to facilitate swallowing and keeping pH levels neutral.


  saliva
• commonly called the throat, is a muscular tube that serves as a passageway for food and air.

  pharynx
• It moves food from the throat to the stomach.

  esophagus
• the muscle movement


  peristalsis
• It is a J-shaped muscle

  It stores the food you eat, and breaks it into tiny pieces.

  Stomach
• pH level of the acid in the stomach

  2
• The folds in the stomach

  rugae
• it is roughly 22 feet long.

  The “small” refers to its diameter, not its length.

  small intestine
• Insides are coated with little ‘fingers’ called?

  Cilia
• Organ of complete digestion and absorption. It is the longest part of the digestive tract.


  Small Intestine
• it is about 5 feet long.

  Accepts what small intestines don’t absorb.

  Absorbs water and minerals from the waste matter.

  large intestine
• Serves as the warehouse of undigested residue or feces

  rectum
• what helps digest fat


  bile
• Is often called the body’s energy factory.

  Liver
• Produces compounds to digest fats and proteins.

  Neutralized acids that enter small intestine

  Enzymes are amylopsin, trypsin, and steapsin.


  Pancreas
• A small vestigial organ that’s attached to the large intestine


  Appendix
• Releases the feces


  Anus
• Breaks down starch into simpler sugar

  Salivary Amylase
• Breaks down protein


  pepsin
• Breaks down sugar into simpler molecules

  Maltase

  Lactose

  Sucros
• Breaks down protein into amino acids

  Peptidase
• Continue protein breakdown

  Trypsin

  Chymotrypsin
• Continues starch breakdown

  amylase
• breaks down fat

  lipase
• breaks down fat globules

  bile salts
• refers to the process in which a cell (parent cell) divides to produce more cells (daughter cells)

  cell division
• a thin fibrous form of DNA wound around proteins called histones. After interphase, it undergoes condensation in which it becomes shorter and compact.

  chromatin