1. Low excitability and slow contraction

2. Have self-discipline

3. To be tense

4. Highly stretchable

5. Different sensitivity to different stimuli (not sensitive to electrical stimulation)

1. Resting potential

2. Slow wave potential

3. Action potential

1. Parasympathetic nerve (vagus and pelvic nerves)

2.Sympathetic nerve

Enteric nervous system (two layers) (also called intramural plexus)

Gastrin, cholecystokinin, secretin, gastric inhibitory peptide, motilin

1. Effect of hydrochloric acid (secreted by parietal cells)

2. Pepsinogen (secreted by chief cells) Requires hydrochloric acid and pepsinogen to activate

3.Intrinsic factor (secreted by parietal cells)

4. Mucus bicarbonate

Cephalic gastric secretion 30% High acidity and pepsinogen content, strong gastric juice digestion ability

gastric secretion 60% acidity and pepsin content are also high, but less than the first phase

Intestinal phase gastric secretion 10% less enzyme

1. Main factors that promote the secretion of gastric juice

2. Main factors that inhibit gastric juice secretion

3. Other factors affecting gastric juice secretion.

1.Tonic contraction

2. Receptive relaxation

3. Peristalsis (starts in the middle of the stomach)

1. Gastric emptying

2. Control of gastric emptying

1. Pancreatic amylase

2. Pancreatic lipase

3. Trypsin and chymotrypsin (Intestinal muscle enzyme is a specific enzyme that activates trypsinogen) Trypsin activates chymotrypsinogen

1. Neuromodulation

2. Body fluid regulation (main)

1. Nature and composition of bile

2. The role of bile

1. Neuromodulation (vagus nerve)

2. Body fluid regulation

1.Tonic contraction

2. Sectional movement

3. Creeping

1.Sodium absorption

2. Iron absorption (absorbed as ferrous ions)

3. Calcium absorption