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Multiple choice zoology endocrine system and chemical co-ordination gastrointestinal tract and liver hormones of heart, kidney, liver and gastrointestinal tract coordination in human beings- chemical control

Secretion of gastric juice is controlled by 

  1. Enterogasterone

  2. Cholecystokinin

  3. Gastrin

  4. Motilin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
A. Enterogastrone is secreted from duodenum and inhibits the secretion of gastric juices.
B. Cholecystokinin is secreted from the duodenum and causes contraction of gall bladder and secretion of pancreatic juice into duodenum.
C. Gastrin is secreted in stomach by the parietal cells and stimulates the secretion of gastric juices from the gastric glands.
D. Motilin is secreted from duodenum and regulates gastrointestinal contractions.
So, the correct answer is 'Gastrin'.
Multiple choice zoology endocrine system and chemical co-ordination gastrointestinal tract and liver hormones of heart, kidney, liver and gastrointestinal tract coordination in human beings- chemical control

Cholecystokinin is a

  1. Bile pigment

  2. Enzyme

  3. Lipid

  4. Gastrointestinal hormone
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Cholecystokinin is a peptide hormone secreted from the cells of duodenum which is an organ of gastrointestinal tract. It was formerly called as pancreozymin. It stimulates the gall bladder to contract and release bile juice (because gall bladder stores bile juice secreted by liver). It also stimulates the secretion of pancreatic juice into duodenum. The secretion of cholecystokinin controlled by the amount of amino acids and fatty acids in duodenum.
So, the correct answer is 'Gastrointestinal hormone'.
Multiple choice zoology endocrine system and chemical co-ordination gastrointestinal tract and liver hormones of heart, kidney, liver and gastrointestinal tract coordination in human beings- chemical control

Enterogastrone is secreted by

  1. Gastric mucosa

  2. Oesophageal mucosa

  3. Saliva

  4. Duodenal mucosa
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Enterogastrone is a peptide hormone secreted by duodenal mucosa. It is secreted in duodenum when there are sugars and proteins and fatty food in the intestine. Duodenum is a part of small intestine present just after the stomach. Enterogastrone decreases gastric secretions. It also affects movement of chyme in the stomach.
So, the correct answer is 'Duodenal mucosa'.
Multiple choice zoology endocrine system and chemical co-ordination gastrointestinal tract and liver hormones of heart, kidney, liver and gastrointestinal tract coordination in human beings- chemical control

A child took sugarcane and sucked its juice. Regarding this which of the following match is correct? 
Substrate      Enzyme       Site of secretion of enzyme         Products formed

  1. Protein's- Pepsin, Duodenum,Polypeptides

  2. Starch- Amylase, Salivary glands, Glucose

  3. Lipids- Lipase, Pancreas Fat globules

  4. Sucrose -Invertase, Duodenum, Glucose + fructose
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The correct answer is (d).

Multiple choice zoology endocrine system and chemical co-ordination gastrointestinal tract and liver hormones of heart, kidney, liver and gastrointestinal tract coordination in human beings- chemical control

Duodenum has characterized glands which secrete two hormones called as

  1. Kinase, estrogen

  2. Secretin, cholecystokinin

  3. Prolactin, parathormone

  4. Estradiol, progestrone
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cholecystokinin, previously called pancreozymin, is synthesized by I-cells in the mucosal epithelium of the small intestine and secreted in the duodenum. It is responsible for stimulating the digestion of fat and protein. Secretin is a peptide hormone that regulates water homeostasis throughout the body, and influences the environment of the duodenum by regulating secretions in the stomach and pancreas. Secretin is produced in the S cells of the duodenum, which are located in the crypts of Lieberkuhn.

Multiple choice zoology endocrine system and chemical co-ordination gastrointestinal tract and liver hormones of heart, kidney, liver and gastrointestinal tract coordination in human beings- chemical control

Cholecystokinin is secretion of 

  1. Duodenum, that causes contraction of gall bladder.

  2. Goblet cells of ileum stimulates secretion of succus entricus.

  3. Liver and controls secondary sex characters.

  4. Stomach that stimulates pancreas to release juice.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cholecystokinin (CCK), formerly called pancreozymin, is a digestive hormone released with secretin, when food from the stomach reaches the duodenum. Cholecystokinin causes contraction of the gallbladder, which forces bile into the duodenum.

Multiple choice zoology endocrine system and chemical co-ordination gastrointestinal tract and liver hormones of heart, kidney, liver and gastrointestinal tract coordination in human beings- chemical control

Secretin

  1. Stimulates enzymes secretion by pancreas, inhibits acid secretion in stomach, stimulates gall bladder

  2. Stimulates bicarbonate secretion by pancreas, inhibits acid secretion in stomach, stimulates bicarbonate secretion by liver

  3. Stimulates acid secretion in stomach, potentiates action of CCK, inhibits intestinal movement

  4. Stimulates gall bladder, stimulates bicarbonate secretion by pancreas
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Secretin stimulates the release of a watery bicarbonate solution from the pancreatic and bile duct epithelium. Secretin increases water and bicarbonate secretion from duodenal Brunner's glands to buffer the incoming protons of the acidic chyme. It also enhances the effects of cholecystokinin to induce the secretion of digestive enzymes and bile from pancreas and gallbladder, respectively.

Multiple choice zoology endocrine system and chemical co-ordination gastrointestinal tract and liver hormones of heart, kidney, liver and gastrointestinal tract coordination in human beings- chemical control

Which of the following belongs to the class of pepsin and trypsin?

  1. Secretin

  2. Gastrin

  3. Rennin

  4. Steapsin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Chymosin, known also as rennin, is a proteolytic enzyme related to pepsin that synthesized by chief cells in the stomach of some animals. Its role in digestion is to curdle or coagulate milk in the stomach, a process of considerable importance in the very young animal.
So, the correct option is 'Rennin'.
Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Pneumonia is an example of 

  1. Communicable disease

  2. Non-communicable disease

  3. Epidemic disease

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

Pneumonia can cause by a virus, fungi, bacteria, etc. They can be transmitted from a contaminated person to a healthy person by sneezing, coughing, contaminated objects, air, etc. Thus it is considered as a communicable disease. So, the correct answer is option A.