Stomach Flashcards
What is the stomach?
A C-shaped organ with valves
What are the valves in the stomach called
Sphincters
What are the two different types of sphincter in the stomach?
Pyloric sphincter
Esophageal sphincter
Name two functions of the sphincters.
Close the stomach
Food to pass through the stomach
What are the 3 types of muscles in the stomach?
Longitudinal muscles
Circular muscles
Oblique muscles
What is the function of the stomach?
Churning movement for mechanical digestion
What are the “wrinkles” in the stomach
Rugae
What does gastric juice consist of ?
Water
Mucus
Hydrochloric acid
Pepsin- protein digesting enzyme- inactive pepsinogen-activate by gastric juice
Lipase-lipids to fatty acids and glycerol
Renin- milk proteins insoluble
What does the stomach do?
Creates churning movement for mechanical digestion
What are the “wrinkles” in the stomach called?
Rugae
What does gastric juice consist of?
Water
Mucus
Hydrochloric acid
Pepsin- digests protein-inactive pepsinogen activated by gastric juice
Lipase- lipids into fatty acids and glycerol
Renin-milk proteins insoluble
What is an ulcer?
Sore in the lining of the stomach, oesophagus and small intestine
