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51.

Argentaffin cells are present in mucous membrance of:

A.	Oesophagus of frog	B.	Stomach of frog
C.	Ileum of frog	D.	Stomach of rabbit

52.

Argentaffin cells in stomach possibly secrete:

A.	Serotonin	B.	Gastrin
C.	Both of these	D.	None of these

53.

In which organ of alimentary canal of rabbit are present Peyer's patches:

A.	Oesophagus	B.	Stomach
C.	Intestine	D.	Rectum

54.

Underlying connective tissue of buccopharyngeal cavity has lymphoid nodules in:

A.	Frog	B.	Rabbit
C.	Both of these	D.	None of these

55.

Pharynx and tongue are lined with endodermal stratified squamous epithelium but nasopharynx is lined in rabbit with:

A.	Cuboidal epithelium	B.	Columnar epithelium
C.	Columnar ciliated epithelium	D.	None of these

56.

Serous glands near lingual papillae in the buccopharyngeal cavity of rabbit secrete:

A.	Watery fluid	B.	A hormone
C.	Digestive juice containing enzymes	D.	None of these

57.

Peristalsis in the alimentary canal is controlled by:

A.	Meisner's plexus	B.	Mesentery plexus of Ayurbech
C.	Both of these	D.	None of these

58.

Intestine in from is about:

A.	25 cm long	B.	50 cm long
C.	100 cm long	D.	200 cm long

59.

Villi are present in the wall of:

A.	Oesophagus	B.	Stomach
C.	Intestine	D.	All of these

60.

Intestine in human body is about 29 feet long because:

A.	It provides more area for storage of food	B.	Bacteria contained in food by gradually be killed
C.	More length increases food absorption	D.	None of these reasons