About Lesson
Components/composition
- Water
- Hormones
- Digestive enzymes
- Mucus
- Inorganic(Na,K, Ca etc.) and organic(Enterokinase, erepsine, arginase etc.) constituents
Function
- Neutralize acid coming from stomach.
- Contains digestive enzymes which help in digestion of food. Also allow for absorption.
- Enterokinase present in intestinal juice activates trypsinogen i.e. into trypsin.
Regulation:
- Intestinal juice is regulated by Hormonal and Nervous mechanisms.
Hormonal Regulation:
When chyme enters small intestine then intestinal mucosa is stimulated and secrets hormones secretin and CCK.
- these hormone promote to secret intestinal juice
Nervous mechanism:
- Intestinal juice secretion is high when Parasympathetic nerves stimulated and secretion is low with stimulation of sympathetic nerve.
- Local nervous reflexes increase the secretion of intestinal juice.