Download Nutrition Lesson 4 Digestive system vertebrates Anatomy..notebook

Nutrition Lesson 4 Digestive system vertebrates Anatomy..notebook
March 28, 2017
Aim: Explain the anatomy of the vertebrate digestive system and human digestion. Hw. Study for nutrition unit test 3/31 B day Group 08 and 4/3 group 09
1. Review: What is digestion?
2. Vocab and Label the main organs and pay attention to function.
3. Complete chart using what you remember from explanation. 4. Correct chart.
5. Complete chart of glands using text book. .
Mar 24­12:29 PM
Mar 27­1:07 PM
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Nutrition Lesson 4 Digestive system vertebrates Anatomy..notebook
March 28, 2017
1. Vocabulary Glands: Organs that produce a secretion.
Villi:
Hairlike projections in the small intestine where absorption of nutrients takes place
Peristalsis:
Alternate waves of relaxing and contracting of the muscular wall of the digestive tube.
Sphincter:
Valve like structure that prevents fluids from backing up.
Mar 26­1:54 PM
Mar 24­12:32 PM
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Nutrition Lesson 4 Digestive system vertebrates Anatomy..notebook
March 28, 2017
Apr 1­8:06 AM
Human digestive system
organ name
Main functions, chemical made
1. physical digestion (teeth)to increase surface contact. 2. Chemical digestion of carbs starts here.
1. moistens food to ease swallowing.
2. Amylase (in saliva) for digestion of carbs. 1. food is moved by peristalsis into stomach. 1. Produces hydrochloric acid
2. Produces pepsin to start digesting proteins
3. Churning (movement) mixes foods
1. Forms 3 enzymes (amylase, trypsin lipase)
2. produces sodium bicarbonate to neutralize acid.
1. Liver produces bile to emulsify (break into droplets) fats
2. Bile is stored in the gallbladder (sent to small intestine.
1. Final digestion of nutrients is completed
2. peristaltic movements deliver chime to L. I.
3. Digested food is absorbed in villi (villus) into blood stream.
1. Vestigial structure not known function
1. Absorbs large amounts of water.
2. Eliminates undigested food as solid waste.
Mar 24­1:29 PM
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Nutrition Lesson 4 Digestive system vertebrates Anatomy..notebook
March 28, 2017
Vertebrates: Have 1 way digestive system with long small intestine where absorption takes place (s. I. to blood.)
Gastric makes reference to stomach (gastric juice)
• Layer of villi increases contact surface
• A villus contains capillaries to absorb sugars, amino acids, nucleotides, vitamins, minerals and water. • They also contain a Lacteal. Lymph vessel that absorbs fatty acids and glycerol.
Apr 13­7:59 AM
List Glands of the D. S, their secretions enzymes and function
Gland
Secretion
Enzymes
Function
gatric juice
Apr 14­12:27 PM
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