Tag: gastrointestinal tract and liver

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Questions Related to gastrointestinal tract and liver

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 hormone is produced in

  1. Stomach and stimulates gastric glands

  2. Intestine and stimulates pancreatic glands

  3. Liver and stimulates gall bladder

  4. Intestine and stimulates crypts of Lieberkuhn
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Secretin is the most important hormone of digestive tract and also first hormone discovered in digestive tract. This hormone stimulates pancreas for synthesis and secretion of non enzymatic part of pancreatic juice. It also stimulates liver for secretion of bile juice and inhibit the gastric acid secretion in stomach and reduce rate of contraction of stomach.

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. Gastrin

  2. Chlolecystokinin

  3. Enterogastrone

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As food enters the confined space of the stomach, it starts applying pressure to the stomach wall. As food enters the stomach, the food bangs against the stomach wall, distending it. This distention causes the stomach to release gastrin. Gastrin stimulates the gastric glands to secrete more gastric juice. 

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

Contraction of gall bladder is carried by

  1. Citric acid and acetyl Co-A

  2. Gastrin

  3. Cholecystokinin

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fatty acids in the lumen of the duodenum stimulate endocrine cells to release the hormone cholecystokinin (CCK). CCK stimulates contractions in the smooth muscle of the gallbladder. CCK causes relaxation of the sphincter of Oddi, allowing bile release 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

Which of the following hormones help in contraction of gall bladder?

  1. Gastrin

  2. Secretin

  3. Cholecystokinin

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

Fatty acids in the lumen of the duodenum stimulate endocrine cells to release the hormone cholecystokinin (CCK). CCK stimulates contractions in the smooth muscle of the gallbladder. CCK causes relaxation of the sphincter of Oddi, allowing bile release 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

Which part of body secretes the hormone secretin?

  1. Stomach

  2. Oesophagus

  3. Illeum

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

When food leaves the stomach through its pyloric end and enters the duodenum it is called chyme (acidic). The $HCI$ of chyme stimulates the wall of duodenum to secrete hormones. It secretes various hormones, example secretin, which is the most important hormone of digestive tract and is released by duodenum. This hormone stimulates pancreas for synthesis and secretion of non enzymatic part of pancreatic juice. It also stimulates liver for secretion of bile juice and inhibit the gastric acid secretion in stomach and reduces rate of contraction of stomach.

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

The hormone 'secretin' stimulates secretion of

  1. Pancreatic juice

  2. Bile juice

  3. Salivary juice

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

Secretin is the most important hormone of digestive tract. This hormone stimulates pancreas for synthesis and secretion of non enzymatic part of pancreatic juice. It also stimulates liver for secretion of bile juice and inhibit the gastric acid secretion in stomach and reduce rate of contraction of stomach.

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

The function of enterogastrone hormone is

  1. To control excretion

  2. To inhibit gastric juice secretion

  3. Regulate the absorption of food

  4. To stimulate gastric glands to release gastric juice
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Enterogastrone is a hormone secreted by the duodenal mucosa, when fatty food is in the stomach or small intestine; it is also released, when sugars and proteins are in the intestine. Enterogastrone is transported by the bloodstream to the glands and muscles of the stomach, where it inhibits gastric movements and secretions, by blocking the production or activity of 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

First discovered hormone

  1. Thyroxine

  2. Adrenaline

  3. Secretin

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

Wm. M. Bayliss and Ernest H. Starling  discovered  secretin, the first hormone, in 1902. They discovered this hormone when they were studying the pancreatic secretion. Secretin hormone stimulates the pancreas to secrete digestive fluid.

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 pancreatic juice is stimulated by

  1. Gastrin

  2. Secretin

  3. Enterogastrone

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

Secretin is the most important hormone of digestive tract. This hormone stimulates pancreas for synthesis and secretion of non enzymatic part of pancreatic juice, while pancreozymin promotes the secretion of enzymatic part of the pancreatic juice. Secretin also stimulates liver for secretion of bile juice and inhibit the gastric acid secretion in stomach and reduces rate of contraction of stomach.

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

  1. Hormone secreted by mucosa

  2. Enzyme secreted by mucosa

  3. Hormone secreted by duodenal mucosa

  4. Secreted by endocrine gland related to digestion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
An enterogastrone is any hormone secreted by the mucosa of the duodenum in the lower gastrointestinal tract in response to dietary lipids that inhibits the caudal (or "forward, analward") motion of the contents of chime
So, the correct answer is 'Hormone secreted by duodenal mucosa'