Digestive System Flashcards
Describe the PANCREAS and its functions
• secrets digestive juices
• produces insulin (for metabolism)
• “leafy tissue”
• is positioned near the liver
what is PEPSIN?
• enzyme that breaks down protein
• produced in the stomach
what is AMYLASE?
• enzyme that breaks down carbs
• is produced in the salivary glands
What happens in the SMALL INTESTINE?
• completes digestion of food molecules
• absorbs the component subunit
• is called small because of diameter
What are the DUODENUM, JENUNUM & ILEUM?
• layers of the small intestine
what are the 4 functions of the digestive system?
- INGEST food
- DIGEST food to cell membrane
- ABSORB nutrients
- ELIMINATE remains
what is CHEMICAL DIGESTION?
• the chemical breaking down of food molecules
• happens in the mouth and small intestine
what are the ORGANS that MAKE UP the digestive system?
• mouth (oral cavity)
• esophagus
• stomach
• small & large intestine
PLUS
• liver
• gall bladder
• pancreas
what are the functions of the LIVER?
• produces BILE to break down fats.
• contains powerful enzymes that break down additives in food.
what is BILE?
• a fluid that aids digestion
what is MECHANICAL DIGESTION?
• the physical breaking down food
• happens in the mouth & stomach
what happens in the STOMACH?
• muscles of the stomach throw food around to break it , also helped by digestive juices.
• lined with MUCUS.
what happens in the ESOPHAGUS?
• the bolus is transported from the oral cavity to the stomach.
what is PERISTALSIS?
• a muscle contraction that help transport the food down the esophagus
what is the ESOPHAGEAL SPLINCTER?
• a muscle “door” that opens when food is ingested.
• to not let acid / food where it’s not supposed to
