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Questions and Answers
The parotid glands are traversed by the facial nerve (VII cranial nerve).
The parotid glands are traversed by the facial nerve (VII cranial nerve).
True
Saliva contains 85% water.
Saliva contains 85% water.
True
Ptialin or salivary amylase is responsible for the primary degradation of proteins.
Ptialin or salivary amylase is responsible for the primary degradation of proteins.
False
Lysozyme in saliva has antimicrobial properties.
Lysozyme in saliva has antimicrobial properties.
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The liver's function is to form bile to emulsify carbohydrates.
The liver's function is to form bile to emulsify carbohydrates.
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The gallbladder stores bile.
The gallbladder stores bile.
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The pancreas produces both pancreatic juice and insulin.
The pancreas produces both pancreatic juice and insulin.
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Holozoic organisms primarily include carnivores and herbivores.
Holozoic organisms primarily include carnivores and herbivores.
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Saprophytic organisms live off decaying organic matter.
Saprophytic organisms live off decaying organic matter.
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The common bile duct is part of the liver.
The common bile duct is part of the liver.
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Study Notes
Types of Digestive Systems
- Complete: Has 2 openings (one for entrance and one for exit) - mouth and anus
- Incomplete: Has 1 opening (serves as both entrance and exit) - mouth = anus
Types of Digestion
- Intracellular: Digestion occurs inside the cell
- Extracellular: Digestion occurs outside the cell
- Mixed: Some organisms have both intracellular and extracellular digestion (first extracellular, then intracellular)
Heterotrophic Organisms
- Include animals and protozoa
- Most animals (carnivorous, herbivorous, omnivorous)
- Live on organic matter in decay
- Do not confuse with intracellular parasites
Fungi
- Micorrhiza system: enzymes are secreted by the mushroom, which is being digested by glucocorro
Porifera
- Food enters the osculum and then goes through the digestive system to be digested intracellually
Protozoa
- Different digestive processes: cell takes in food and then excretes waste
- Examples: Ameba, pseudoporo, and another unnamed organism
Glands and Saliva
Salivary Glands
- Sublingual
- Submaxillary
- Parotid: traversed by the facial nerve (VII)
Composition of Saliva
- Water (85%)
- Enzymes:
- Ptialin or salivary amylase: primary degradation of starch or carbohydrates
- Lysosome: antimicrobial (molecule that kills bacteria)
Function of Saliva
- Formation of the food bolus
- Protection through lysosome
Liver
Function: to form bile (emulsify fats)
- Stores bile: Gallbladder
Stomach
- Hepatic duct
- Common bile duct
- Pancreas
Pancreas
Function: forms pancreatic juice
Enzymes:
- Lipase
- Amylase
- Trypsin
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Description
Assess your knowledge of digestive systems, including types of digestive systems and digestion processes.
