stomach small intestine large intestine pharynx esophagus liver gall bladder pancreas oral cavity
TRANSCRIPT
Stomach
Small Intestine
Large Intestine
Pharynx
EsophagusLiver
Gall Bladder
Pancreas
Oral cavity
• Function: Break down food into molecules that can used by cells
• Enzymes, acids, hormones, bile aid in breakdown
• Sphincters (ring of muscle) separate sections
• Nutrients passed into the circulatory system to be distributed in the blood
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Oral cavity
• Mechanical digestion: Teeth grind food
• Chemical digestions: Saliva (amylase) begins to breakdown starches
• Bolus is created (ball of chewed & moistened food)
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Pharynx
• Epiglottis seals off the trachea
• Bolus pushed down the esophagus by the tongue
Esophagus
• Connects mouth with stomach
• Peristalsis: Muscular movement pushes food along– Bolus pushed down
the esophagus by muscles
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Stomach
• Function: Prepares food for absorption
• Chemical digestion– Pepsin (enzyme)
digests proteins– Stomach acids mix
• Mechanical digestion– Muscles contract to
churn the bolus (~4 hours)
• Chyme created: paste-like mixture of food, enzymes, acids
• Peristalsis pushes chyme through sphincterClick pic to play
Small Intestine
• Function: Absorption of nutrients
• Duodenum– Chemical digestion:
Enzymes from the liver, gallbladder, pancreas released to aid digestion
– Mechanical digestion: Muscular contractions mix & churn the chyme
• Peristalsis pushes the chyme along
• Nutrients absorbed into the capillaries of the s. intestine
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Liver
Gall Bladder
• Functions:
– 1) Break down toxic chemicals (alcohol)
– 2) Produces bile to break down fats
• Gall Bladder: Stores bile until chyme moves into duodenum
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Pancreas
• Functions: – 1) Release enzyme into duodenum to break down starches &
lipids– 2) Releases insulin into the blood (diabetes)
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Large Intestine
• AKA: Colon• Peristalsis continues to
push the chyme• Remaining water is
absorbed from the chyme– Undigested material
solidifies (feces)
• Nutrients from bacteria absorbed
• Feces exits the body through the rectum & anus
• The liver is labeled which letter?
• K
L
• The pancreas is labeled which letter?
• D
L
• Which letter begins the process of chemical digestion?
• L (salivary glands)
L
• Most nutrients are absorbed at which organ?
• E (small intestine)
L
• Which organ produces bile to help digest fats?
• K (liver)
L
• Which organ absorbs water from chyme to solidify waste?
• F (large intestine)
L
• Which organ is the location where the gall bladder and pancreas release fluids to mix with the chyme?
• I (Duodenum)
L
Label the letters of the diagram
A = esophagus
B = I don’t care
C = stomach
D = pancreas
E = Small intestine
F = Large intestine
G = Rectum
H = appendix
I = duodenum
J = gall bladder
K = liver
L = salivary glands
L