67

Q67. Read the following statements with respect to digestive system.

         a. In humans three pairs of salivary glands are situated just outside the buccal cavity and secrete saliva into the buccal cavity.

         b. The bile duct and pancreatic duct open together into duodenum as common hepato-pancreatic duct which is guarded by sphincter of Boyden 

         c. The stomach stores the food for 1-2 hours and is called chyme.

         d. Renin is a proteolytic enzyme found in gastric juice of infants which helps in digestion of milk protein.
 

Dear student,
The correct answer is (2)Three.
1)The statement a is correct because humans have three pairs of salivary glands which are known as parotid, submandibular and sublingual glands. These glands are situated just outside the buccal cavity and secrete their enzymes into the buccal cavity with the help of specific ducts.

2)The statement b is incorrect. The bile duct and pancreatic duct open into duodenum as a common hepatopancreatic duct which is guarded by sphincter of Oddi and no the sphincter of Boyden.

3)The statement c is correct. The stomach stores the food for about 1 - 2 hrs ad the food is called as chyme.

4)The statement 4 is correct. Renin is a proteolytic enzyme found in the gastric juice of infants which help in digestion of milk proteins in them.

Regards

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