THE DIGESTIVE SYSTEM FUNCTION OF THE DIGESTIVE SYSTEM
- Slides: 16
THE DIGESTIVE SYSTEM
FUNCTION OF THE DIGESTIVE SYSTEM • Break down foods • Extract nutrients needed for cellular activities (Respiration)
FOUR STEPS IN DIGESTION 1. Ingestion (eating food) 2. Digestion (breaking food down) 3. Absorption (taking in useful molecules) 4. Elimination (getting rid of physical waste)
TWO TYPES OF DIGESTION • Mechanical Digestion: Physical break down of large pieces of food into smaller pieces. • Chemical Digestion: Enzymes break down smaller food pieces into molecules the body can use.
1) THE MOUTH • Mechanical Digestion of all foods by teeth. • Chemical digestion of Carbohydrates by enzymes in the saliva.
2) THE ESOPHAGUS • Tube connecting the mouth to the stomach. • Peristalsis: muscular contractions that push food down the tube and through the system.
2) THE ESOPHAGUS • Epiglottis: flap that prevents food from “going down the wrong pipe”
3) THE STOMACH • Mechanical Digestion of all foods by muscular contractions/churning. • Chemical digestion of Proteins by enzymes (pepsin) and stomach acid.
4) THE SMALL INTESTINE • Chemical digestion of proteins, carbs, and fats is completed by: • Enzymes – added by the PANCREAS • Bile – created by the LIVER and stored in the GALLBLADDER • digests fats
4) THE SMALL INTESTINE • NUTRIENTS are ABSORBED by finger-like projections called VILLI and enter the blood
5) THE LARGE INTESTINE • WATER is ABSORBED from the undigested material leaving waste to be eliminated (poop)
A JOURNEY THROUGH THE SYSTEM • https: //www. youtube. com/watch? v=Vwrs. L-l. CZYo • The Magic School Bus Gets Eaten
MALFUNCTIONS OF THE DIGESTIVE SYSTEM Heartburn Ulcers Constipation Diarrhea
HEARTBURN • Cause: Acid from the stomach flows into the esophagus due to overeating/eating certain foods • Symptom: burning in chest • Treatment: Antacids
ULCER • Cause: Stomach acid/bacteria irritate the stomach lining • Symptom: abdominal pain • Treatment: Medication or Antibiotics
CONSTIPATION • Cause: Too much water absorbed in large intestines • Symptom: Trouble moving bowels • Treatment: drink extra water/eat fruits and fibers DIARRHEA • Cause: Not enough water absorbed in large intestine • Symptom: watery bowel movements • Treatment: medication (pepto bysmol) and stay hydrated
- Respiratory digestive and circulatory system
- Pepto bysmol
- Function of mouth in digestive system
- Digestive system function
- Function of digestive tract
- Blade shaped teeth that function in cutting
- Main functions of the digestive system
- What does the inside of a human stomach look like
- Digestive system enzymes chart
- Larynx function in digestive system
- Function of body in stomach
- Main function of small intestine
- Flow chart of digestive system
- Large intestine function in digestive system
- Large intestine function in digestive system
- Nervous system and digestive system
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