Tag: ingestion of food

Questions Related to ingestion of food

Digestion is the breaking down of large food molecules into
smaller ones. The main purpose of this is to

biology coordination in life processes ingestion of food mechanism of digestion

  1. Make the food soluble

  2. Enable the digestive enzymes to be used up

  3. Provide many different types of molecules for absorption

  4. Make the Passage of food along the gut easier

  5. Make the food insoluble

Show answer
Correct Option: C
Explanation:

Most of our foods are complicated chemical structure.
In order to be absorbed and utilized by the body, they
must be broken down into relatively simple molecules.
The process by which the complex food materials are
changed to simple molecules is called digestion.


Air or food is prevented from going into the trachea during swallowing by the

biology coordination in life processes ingestion of food mechanism of digestion

  1. larynx

  2. epiglottis

  3. pharynx

  4. tongue

Show answer
Correct Option: B
Explanation:

Epiglottis stands open during breathing, allowing air into the larynx. During swallowing it closes to prevent aspiration, forcing the swallowed liquids or food to go into the esophagus instead. It is thus the structure that diverts passage air into  the trachea and food into the esophagus

So, the correct answer is 'epiglottis'

Food and air pathway are divided at

biology coordination in life processes ingestion of food mechanism of digestion

  1. Larynx

  2. Pharynx

  3. Oesophagus

  4. Stomach

Show answer
Correct Option: B
Explanation:
The pharynx is part of the digestive system as well as the respiratory system because it carries both food and air. At the bottom of the pharynx, this pathway divides in two, one for food (the oesophagus, which leads to the stomach) and the other for air.
So, the correct option is 'Pharynx'.

Succus entericus acts in?

biology coordination in life processes ingestion of food mechanism of digestion

  1. Alkaline medium

  2. Strongly acidic medium

  3. Neutral medium

  4. Weakly acidic medium

Show answer
Correct Option: A

For how much time an average meal stays in a fish-hook stomach?

biology coordination in life processes ingestion of food mechanism of digestion

  1. 6---8 hrs

  2. 3----4 hrs

  3. 1---2 hrs

  4. 8---10 hrs

Show answer
Correct Option: B
Explanation:
  • Variables considered with feeding rate and gastric evacuation time includes temperature, season, activity, body size, gut capacity, satiety, and metabolic rate. 
  • Gastric emptying rate declines more or less exponentially with time. Larger meals first are digested at a faster rate than small meals and the amount of pepsin and acid produced was somewhat proportional to the degree of distension of the stomach.
  •  Stomach mobility often increases with the degree of stomach distension also. Gastric emptying time is approximately 3 - 4 hours.

The swallowing of food from buccopharyngeal cavity to stomach is called 

biology coordination in life processes ingestion of food mechanism of digestion

  1. Deglutition

  2. Mastication

  3. Peristalsis

  4. None of the above

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Correct Option: A

Enterokinase is

biology coordination in life processes ingestion of food mechanism of digestion

  1. Pancreatic hormone

  2. Intestinal hormone

  3. Pancreatic enzyme

  4. Component of intestinal juice

Show answer
Correct Option: D

What are called micelles during absorption

biology coordination in life processes ingestion of food mechanism of digestion

  1. Small glycerol molecules

  2. Small droplets of fatty acids

  3. Very small fat droplets

  4. Large fat molecules

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Correct Option: B

The secretion of brush border cells of intestinal mucosa along with secretion of goblet cells constitute

biology coordination in life processes ingestion of food mechanism of digestion

  1. Succus entericus

  2. Chyme

  3. Gastric juice

  4. Chylomicrons

  5. Bolus

Show answer
Correct Option: A

Intrinsic factor is secreted by

biology coordination in life processes ingestion of food mechanism of digestion

  1. Goblet cells

  2. Oxyntic cells

  3. Argentaffin cells

  4. Chief cells

Show answer
Correct Option: C