What is the role of the mouth in the digestive system?
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The mouth is the entry point for food where mechanical and chemical digestion begins.
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What is the role of the mouth in the digestive system?
The mouth is the entry point for food where mechanical and chemical digestion begins.
What are the functions of the liver in digestion?
The liver produces bile and processes nutrients.
What are the regions of the stomach?
The regions of the stomach are the fundus, body, and pylorus.
What is the ingestion process in digestion?
Ingestion is the intake of food.
What does cholecystokinin (CCK) stimulate?
CCK stimulates bile release and pancreatic enzyme secretion.
What does emulsification refer to?
Emulsification is the process of breaking down fat globules into smaller droplets to increase surface area for enzymes.
What is the role of proteases in digestion?
Proteases digest proteins into amino acids.
What does the large intestine do?
The large intestine absorbs water and electrolytes and compacts waste into feces.
How are fats digested?
Fats are emulsified by bile and broken down by lipases into fatty acids and glycerol.
What is a unique feature of frogs' digestive systems?
Frogs have a tongue used for capturing prey, and their stomach and intestines are adapted for digesting whole prey.
What components are included in the large intestine?
The components of the large intestine are the cecum, colon, rectum, and anus.
What is mechanical digestion?
Mechanical digestion is the physical breakdown of food, such as chewing and churning.
What is the function of secretin?
Secretin stimulates bicarbonate secretion from the pancreas.
How does the esophagus function in digestion?
The esophagus is a muscular tube that transports food to the stomach via peristalsis.
What is the role of the gallbladder?
The gallbladder stores bile.
What is the main function of the small intestine?
The small intestine is the major site for nutrient absorption, aided by enzymes from the pancreas and bile from the liver.
What is chemical digestion?
Chemical digestion is the enzymatic breakdown of macromolecules into smaller molecules.
What is chyme?
Chyme is a semi-fluid mass of partially digested food expelled by the stomach into the small intestine.
What are the primary functions of the stomach?
The stomach secretes gastric juices for further digestion and churns food into chyme.
What does elimination refer to in digestion?
Elimination refers to the removal of indigestible substances as feces.
What sections make up the small intestine?
The small intestine consists of the duodenum, jejunum, and ileum.
Where does absorption primarily occur?
Absorption primarily occurs in the small intestine.
Where does absorption occur in earthworms?
Absorption in earthworms occurs in the intestine, with nutrients absorbed directly into the bloodstream.
How are carbohydrates broken down in digestion?
Carbohydrates are broken down by amylases into simple sugars.
How does the digestive system of earthworms compare to humans?
Earthworms have a simple tube digestive system where food passes through a crop and gizzard for grinding.
Define peristalsis.
Peristalsis is the wave-like muscle contractions that move food through the digestive tract.
What does the pancreas contribute to digestion?
The pancreas produces digestive enzymes and bicarbonate.
What does gastrin do in hormone regulation?
Gastrin stimulates gastric acid secretion.
