Intestinal Juice

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.