Tag: process of digestion

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Multiple choice bio-chemistry coordination in life processes digestive system - organs process of digestion coordination in the process of digestion

Which type of cells are the part of tubular  glands of the stomach epithelium?
A. Parietal cells
B. Peptic cells
C. Zymogen cells 
D. Oxyntic cells 

  1. D only

  2. A & D

  3. A,B & C

  4. A,B,C & D
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Answer is option (D) 

Parietal cells (also known as oxyntic cells) are the epithelial cells that secrete hydrochloric acid (HCl) and intrinsic factor. 
Peptic cells are also known as zymogen cells releases pepsinogen and chymosin. It means all cells given in the option belongs to stomach epithelium and the part of tubular gland.

Multiple choice bio-chemistry coordination in life processes digestive system - organs process of digestion coordination in the process of digestion

Which of the following are chiefly digested in the stomach?

  1. Protein

  2. Carbohydrate

  3. Lipids

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

Digestion is a  process where the food is broken down by the mechanical and chemical process. Digestion begins at the mouth where the only carbohydrate is digested due to the presence of salivary amylase. Food then moves to the stomach through oesophagus where the gastric juice is secreted by the stomach wall which contains pepsin for protein digestion HCl and mucus. It digestion the complex form of protein into the simple form. Maximum protein is digested in the stomach.

Therefore, the correct answer is option A.

Multiple choice bio-chemistry coordination in life processes digestive system - organs process of digestion coordination in the process of digestion

Germs entering the body through food are mainly killed in the region of alimentary canal where pH may reach the level

  1. 2

  2. 7

  3. 10

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

Digestion in the human body is a complex process where pH of the digestive tract plays a crucial role. pH level in the region of pharynx and mouth is controlled by the saliva and is maintained at about 6.8. However, in the stomach, the gastric acid lowers the pH to 1-3 making it highly acidic. This acidic condition activates the digestive enzyme pepsinogen and converts it into pepsin for protein digestion and kills the pathogenic bacteria. Therefore, the correct answer is option A.

Multiple choice bio-chemistry digestive system of human digestive system - organs process of digestion coordination in the process of digestion

The tongue helps in mixing food with saliva.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Digestion starts from the mouth. The salivary gland in the mouth secretes saliva, with the help of tongue saliva mixes with the food when is chewed. The tongue is a muscle with glands, sensory cells, and fatty tissue that helps to moisten food with saliva.

So, the correct answer is option A.

Multiple choice bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

Partially digested food in ruminants is

  1. Chyme

  2. Cud

  3. Bolus

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

Ruminants are mammals that are able to acquire nutrients from plant-based food by fermenting it in a specialized stomach prior to digestion, principally through bacterial actions. The process typically requires the fermented cud to be regurgitated and chewed again. The process of re chewing the cud to further break down plant matter and stimulate digestion is called rumination. Thus, option B is correct. Chyme is the semifluid mass of partly digested food that is expelled by the stomach into the duodenum and moves through the intestines during digestion. Bolus is a small rounded mass of a substance, especially of chewed food at the moment of swallowing. 

Multiple choice bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

The opening of the stomach in duodenum is regulated by  

  1. Sphineter of Oddi

  2. Pyloric sphincter

  3. Gastro-oesophageal

  4. Ileo-caeeal valve
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A. Sphincter of Oddi is the opening of the hepatopancreatic duct into duodenum.

B. Pyloric sphincter is found between the duodenum and posterior stomach. It regulates the opening of duodenum into stomach.
C. Gastro-oesophageal sphincter is found between the oesophagus and stomach.
D. Ileo-caecal valve is present between ileum of small intestine and caecum of large intestine.
So, the correct answer is 'Pyloric sphincter'.

Multiple choice bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

Which animal out of the following has the longest food-pipe?

  1. Girraffe

  2. Camel

  3. Whale

  4. Yak
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The esophagus commonly known as the food pipe or gullet (gut), is an organ in vertebrates through which food passes, aided by peristaltic contractions, from the pharynx to the stomach.The giraffe has the longest neck of any land mammal, due to which the food pipe Measures about 6.5 feet in length, making it an animal with the longest food pipe as well.
So, the correct answer is 'Giraffe'.