Biology · Science General

Human Digestive System

2,002 Questions

The human digestive system explores the breakdown of biomacromolecules, covering organs from the stomach to the small intestine. It involves physiological processes like chyme movement, pH levels, and nutrient absorption in the gut. These fundamental biology concepts are regularly featured in medical and general science competitive exams.

Small intestine functionsBiomacromolecule breakdownStomach and digestionIntestinal bacteria

Human Digestive System Questions

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Incomplete bowel evacuation is 

  1. Indigestion

  2. Vomiting

  3. Dysentery

  4. Constipation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Constipation is a condition of digestive system of in which an individual has hard feces that are difficult to expel. It include incomplete and infrequent bowel movement.
So the correct answer is 'Constipation'.
Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Difficulty in digestion of food is called as

  1. Constipation

  2. Malfunction

  3. Indigestion

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Difficulty in digestion of food is called indigestion. It occurs as a symptom of gastroesophageal reflux disease, ulcers or gall bladder disease. It cause abdominal pain, belching gas, nausea and vomiting.
So, the correct answer is 'Indigestion'.
Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

When the peristaltic movements of the stomach and oesophagus reverse their normal direction, it causes

  1. Constipation

  2. Indigestion

  3. Vomiting

  4. Acidity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Peristalsis pushes food through the lower oesophagus into the stomach. When the peristaltic movements of the stomach and oesophagus reverse their normal direction, it is called reverse peristalsis. In this situation, the contraction of abdominal muscles and diaphragm pushes food back through the oesophagus and out through mouth which results to vomiting. So, the correct option is C.

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Jaundice is a disease of

  1. Kidney

  2. Liver/Digestive system

  3. Pancreas

  4. Duodenum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Jaundice is a condition characterized by the yellowing of the skin and eyes, which occurs due to the buildup of bilirubin in the blood. This is primarily caused by dysfunction or disease of the liver, which is responsible for processing bilirubin.

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Which is not a disorder of digestive system

  1. Emphysema

  2. Jaundice

  3. Constipation

  4. Vomiting
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Emphysema is a chronic respiratory condition characterized by damage to the air sacs (alveoli) in the lungs. It is a disorder of the respiratory system, not the digestive system.

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Increased liquidity of faecal discharge associated with reduced absorption of food is

  1. Vomiting

  2. Indigestion

  3. Constipation

  4. Diarrhoea
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Diarrhoea is defined by the frequent passage of loose or liquid stools. This condition is often caused by reduced absorption of water and nutrients in the intestines.

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Stool of a person is whitish grey coloured due to malfunction of which of the following organs?

  1. Pancreas

  2. Spleen

  3. Kidney

  4. Liver
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The stool of a person is whitish grey colored due to malfunction of 'liver'.

So the correct option is D.

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Ejection of stomach contents through the mouth is called _______.

  1. diarrhoea

  2. constipation

  3. vomiting

  4. indigestion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ejection of stomach contents through the mouth is called 'vomiting'.

So the correct option is C.

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Which of the following statements is incorrect?

  1. Faecal accumulation in the rectum initiates a neural reflex causing an urge for its removal

  2. Irregular bowel movements cause constipation.

  3. In diarrhoea absorption of food is increased.

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In diarrhoea, absorption of food is reduced. So, the correct answer is (c)

Multiple choice evs from tasting to digestion balanced diet and malnutrition assimilation of food components and importance of food science of kitchen

Which of the following activities improves digestion?

  1. Swallowing

  2. Chewing

  3. Dehydration

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Chewing is an important step in digestion. It helps in breaking down of food mechanically into finer texture and thus increase surface area of food for the action of saliva. Hence it improves digestion.
So, the correct answer is 'Chewing'.
Multiple choice zoology endocrine system and chemical co-ordination mechanism of hormone action coordination in human beings- chemical control endocrine system in humans

The stomach pain impulses are received by receptors known as

  1. Proprioreceptors

  2. Exteroreceptors

  3. Visceral receptors

  4. Chemoreceptors
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

a) Proprioceptors are the mechanoceptors which are activated by changes in pressure or movement and are involved in maintaining muscle tone, body equilibrium and posture. 

b) Exteroreceptors are the one that is activated by stimulus from external environments. This includes photoreceptors of eye and mechanoreceptors of inner ear. Stomach pain is an internal stimulus. 
c) Receptors which are present in internal organs and are activated by internal stimuli are known as visceral receptors. 
d) Chemoceptors are the specialized receptors for taste and smell which are activated by changes in the chemical concentration of the substances. 

Multiple choice biology chemical coordination and integration mechanism of hormone action coordination in human beings- chemical control endocrine system in humans

Which among the following is the correct example of negative feedback?

  1. Regulation of blood calcium level

  2. Saliva secretion

  3. Secretion of pancreatic amylase

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A- Levels of parathyroid hormone are regulated by a negative feedback loop by increasing blood calcium levels which further prevents the release of parathyroid hormone.

Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

During blood clotting, fibrin is produced by

  1. Thrombokinase

  2. Prothrombin

  3. Liver

  4. Proteolysis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
During the process of blood clotting, platelets release thromboplastin which converts prothrombin into thrombin. This thrombin in the presence of calcium ions is responsible for conversion of fibrinogen into insoluble fibrin, thus forming a clot
So, the correct answer is 'Prothrombin'
Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

Prothrombin is found in

  1. Intestine and helps in cellulose digestion

  2. Liver and helps in production of bile

  3. Blood and gives red colour to blood

  4. Blood and helps in blood clotting
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Prothrombin is a plasma protein which is converted into thrombin in the presence of thromboplastin released by platelets at the site of injury. The thrombin then converts protein fibrinogen into insoluble fibrin and thus aids in blood clotting. 

Multiple choice biology soldiers of defense blood clotting and healing of wounds coagulation of blood blood clotting

In human, the prothrombin required for blood clotting is produced in

  1. Liver

  2. Stomach

  3. Pancreas

  4. Spleen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Prothrombin is a plasma glycoprotein produced in the liver. It gets converted into thrombin by a clotting factor prothrombinase which further transforms fibrinogen into fibrin which combines with platelets to form clot.