Acid (Hcl) is secreted by the parietal cells of the stomach. In the stomach the food itself and saliva from mouth (this is little alkaline) regulates acidity of the stomach. But acid in normal quantity is needed for digestion, specially for meats, hard and solid foods.
Sodium bicarbonate
gastrin
Yes, Gastrin is a hormone that the stomach secretes to help balance the pH when it rises. see chacha.com
Gastrin is a hormone that is produced by the stomach to increase the motility of the stomach which would then allow the stomach to empty in anticipation of the next meal.
No, but insulin is a hormone that regulates the body's production of glucose.
Negative feedback usually regulates hormone concentrations in the blood.
Melatonin is the hormone that regulates sleep-wake cycles in the body. Produced by the pineal gland, melatonin levels typically rise in the evening, signaling to the body that it is time to sleep. Disruption in melatonin production can lead to sleep disorders.
A hormone that regulates the hormone production of another endocrine gland.
That is hormone gastrin. It is secreted by stomach
thrombopoietin
thyroid gland regulates metabolisms of the body
Your stomach has a pH of 2.0
Because the chemical that works in the stomach- pepsin (a chemical that breaks down proteins) only works in acidic conditions, which is low pH. Hope that helps