Digestive System of Human Questions and Answers for competitive exams

Digestive System of Human:-

The system by which ingested food is acted upon by physical and chemical means to provide the body with absorbable nutrients and to excrete waste products; in mammals the system includes the alimentary canal extending from the mouth to the anus, and the hormones and enzymes assisting in digestion.

(1.) Alimentary Canal

1.  Buccal Cavity
2. Oesophagus
3. Stomach
4. Intestine

(2.) Accessory digestive Gland

1. Salivary Gland
2. Liver
3. Gall bladder
4. Pancreas

What is the digestive system and its functions ?

Food enters the mouth and passes to the anus through the hollow organs of the GI tract. The liver, pancreas, and gallbladder are the solid organs of the digestive system. The digestive system helps the body digest food.

What are the diseases of digestive system?

Intestinal problems, such as polyps and cancer, infections, celiac disease, Crohn disease, ulcerative colitis, diverticulitis, malabsorption, short bowel syndrome, and intestinal ischemia. Gastroesophageal reflux disease (GERD), peptic ulcer disease, and hiatal hernia.

Digestive System Related Important Questions:-

1.The hardest substance of vertebrate body is ?

(A) Keratin

(B) Enamel

(C) Dentine

(D) Chondrin

... Answer is (B)

 2. In mammals, the digestion of starch starts from ?

(A) Mouth

(B) Stomach

(C) Oesophagus

(D) Duodenum

... Answer is (A)

 3. Tusk of an elephant is an enormously enlarged  ?

(A) Upper canine

(B) Lower incisor

(C) Upper incisor

(D) Lower canine

... Answer is (C)

 4. Which of the following is vestigial teeth found in human ?

(A) Incisors

(B) Premolars

(C) Diphyodont

(D) Wisdom tooth

... Answer is (D)

 5. Dental formula of human being is ?

(A) I2 ,C2 ,P1, M3

(B) I2, C1, P2, M3

(C) I3, C1, P2, M2

(D) I2, C2, P3, M1

... Answer is (B)

 6. Pulp cavity of teeth is lined by ?

(A) Odontoblast

(B) Chondroblast

(C) Osteoblast

(D) Amyloblast

... Answer is (A)

 7. Snake venom is highly modified saliva containing _______?

(A) prototoxins

(B) neutrotoxins

(C) zootoxins

(D) electrotoxins

... Answer is (C)

 8. HCl is secreted by ?

(A) Zymogen cells

(B) Oxyntic cells

(C) Kupffer cells

(D) Muscous cells

... Answer is (B)

 9. Wisdom teeths are ?

(A) Last molars

(B) Last Premolars

(C) Incisors

(D) Canines

... Answer is (A)

 10. Water is largely absorbed in ?

(A) Stomach

(B) Oesohagus

(C) Small Intestine

(D) Colon (Large Intestine)

... Answer is (D)

 11. Vermiform appendix is a part of ?

(A) Alimentary canal

(B) Nervous system

(C) Vascular system

(D) Reproductive system

... Answer is (A)

 12. he number of teeth that are developed twice in the lifetime of human being is ?

(A) 4

(B) 12

(C) 20

(D) 28

... Answer is (C)

 13. Fat digestion is facilitated by ?

(A) Bile juice

(B) Pancreatic juice

(C) Gastric juice

(D) None of these

... Answer is (A)

 14.Parotid salivary gland are present ?

(A) Below the tongue

(B) Below the ear

(C) Below the eye orbit

(D) In the angle between two jaws

... Answer is (B)

 15. Pancreatic juice contains ?

(A) Trypsin, lipase and mltase

(B)  Pepsin, trypsin and maltase

(C) Trypsin, chymotrypsin, amylase and lipase

(D) None of these

... Answer is (C)

 16. Ptyalin is ?

(A) Strongly acidic

(B) Slightly acidic

(C) Slighly neutral

(D) Strongly alkaline

... Answer is (B)

 17. Liver in our body stores ?

(A) Vitamin A

(B) Vitamin D

(C) Vitamin B12

(D) All of these

... Answer is (D)

 18. pH of gastric juice is ?

(A) 2

(B) 4

(C) 6

(D) 8

... Answer is (A)

 19. In pancreas, pancreatic juice and hormones are secreted by ?

(A) Same cells

(B) Different cells

(C) Same cells at different times

(D) None of these

... Answer is (B)

 20. The pH of amylase present in saliva is ?

(A) 6

(B) 6.8

(C) 7.2

(D) 8

... Answer is (B)