Question

Mark the following statements (I-IV) regarding digestion and absorption in mammals as true or false.

I. Both Kuffer’s cells and Glisson’s capsule are the characteristics of mammalian liver.
II. In dentition, the thecodont means that teeth are embedded in the socket of jawbones.
III. There are three pairs of salivary glands in human beings, out of them parotid being the smallest slaivary gland is situated beneath the tongue.
IV. Zymogen (inactive form of enzymes) are not the secretions of peptic cells.

• A. All statements are true
• B. All statements are false
• C. I and II are true while III and IV are false
• D. III and IV are true while I and II are false

Answer 1

The correct option is C I and II are true while III and IV are false

1. Each lobule of liver is covered by a thin connective tissue sheath, Glisson's capsule. The mammalian liver also contains phagocytic cells known as Kupffer cells which engulf dead WBCs, RBCs and pathogens.
2. In thecodont dentition, the base of the tooth is enclosed in jaw sockets.
3. There are three pair of salivary gland in human being sublingual, submandibular and parotid. The parotid glands are the largest and are located near the ears. Submandibular or submaxillary gland are medium sized, while sublingual glands are the smallest, which is situated beneath the tongue.
4. Zymogens or proenzyme are secreted by the secretion of zymogen cells or peptic cells or chief cells.