The stomach

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The bolus enters the stomach through the cardiac sphincter
There are 3 layers of muscle in the stomach
The contraction of muscles act to break down food mechanically
The main function of the stomach is protein digestion
Gastric protease (pepsin) is the enzyme which is secreted by glands help in long tubes called gastric pits which line the stomach
These gastric glands also secrete hydrochloric acid which also helps to chemically break down food
The stomach has a thick lining of mucous to protect itself from the acids and enzymes
Food remains in the stomach for between 2-8 hours before being pushed by the peristalsis to the small intestine

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The stomach

Cards (8)

1.3 Digestion and the Digestive System in Humans

2.2.1 The Human Digestive System

2.2.1 The Human Digestive System

1.3.1 The Digestive System

1.1 Digestive System

5.2 The Human Nervous System

5.2 The Human Nervous System

3.2 Human Defence Systems

1.4 Circulatory System in Humans

3.2 Human Defence Systems

1.3.2 Enzymes in Digestion

1.2.2 The Human Respiratory System

1.6.3 Human Impact

1.3.3 Absorption

7.1.1 Endocrine System

2.5 Making Human Resource Decisions

2.6.2 The Immune System

3.3.5 Comparing Electoral and Party Systems

1.1.1 Major bones in the human body

1.1.7 Major muscles in the human body

8.1.1 Formation of the Solar System