Tag: coordination in human beings- chemical control

Questions Related to coordination in human beings- chemical control

Secretion of gastric juice is stopped by

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

  1. Gastrin

  2. Secretin

  3. Enterogastrone

  4. Cholecystokinin

Show answer
Correct Option: C
Explanation:
A. Gastrin is secreted in stomach by the parietal cells and stimulates the secretion of gastric juices from the gastric glands.
B. Secretin is secreted in duodenum and stimulates the secretion of pancreatic juice but inhibits the secretion of gastric juices.
C. Enterogastrone is secreted from the duodenal mucosa and decreases the secretion of gastric juices.
D. Cholecystokinin is secreted from the duodenum and causes contraction of gall bladder and secretion of pancreatic juice into duodenum.
So, the correct answer is 'Enterogastrone'.

Which hormone stimulates the gastric glands to release the gastric secretion? 

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

  1. Enterogastrone

  2. Gastrin

  3. Pancreozymin

  4. Cholecystokinin

Show answer
Correct Option: B
Explanation:
A. Enterogastrone is secreted from the duodenal mucosa and decreases the secretion of gastric juices.
B. Gastrin is secreted in stomach by the parietal cells and stimulates the secretion of gastric juices from the gastric glands.
C. Pancreozymin is the former name of cholecystokinin hormone that stimulates the contraction of gall bladder and release of pancreatic juices into duodenum.
D. Cholecystokinin is secreted from the duodenum and causes contraction of gall bladder and secretion of pancreatic juice into duodenum.
So, the correct answer is 'Gastrin'.

Hormone involved in discharge of pancreatic secretions is

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

  1. Gastrin

  2. Cholecystokinin

  3. Secretin

  4. Both B and C

Show answer
Correct Option: D
Explanation:
A. Gastrin is secreted in stomach by the parietal cells and stimulates the secretion of gastric juices from the gastric glands.
B. Cholecystokinin is secreted from the duodenum and causes contraction of gall bladder and secretion of pancreatic juice into duodenum.
C. Secretin is secreted in duodenum and stimulates the secretion of pancreatic juice but inhibits the secretion of gastric juices.
Hence, both cholecystokinin and secretin are involved in discharge of pancreatic secretions. So both options B and C are correct. 
So, the correct answer is 'Both B and C'.

Enteroendocrine glands are present in 

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

  1. Stomach

  2. Intestine

  3. Oesophagus

  4. Both A and B

Show answer
Correct Option: D
Explanation:
Enteroendocrine glands are the endocrine glands present in gastrointestinal tract. Endocrine glands secrete their products directly into the blood stream. For example, cholecystokinin is secreted from duodenum (part of small intestine) and stimulates the contraction of gall bladder to release bile juice and also stimulates secretion of pancreatic juice. An example of hormone secreted from enteroendocrine gland in stomach is gastrin which stimulates secretion of gastric juice.
Hence, both options A and B are correct.
So, the correct answer is 'Both A and B'.

Cholecystokinin and secretin are secreted by

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

  1. Stomach

  2. Liver

  3. Duodenum

  4. Ileum

Show answer
Correct Option: C
Explanation:

  • Cholecystokinin is secreted from the duodenum and causes contraction of gall bladder and secretion of pancreatic juice into duodenum.
  • Secretin is secreted from duodenum and stimulates the secretion of pancreatic juice but inhibits the secretion of gastric juices.
So, the correct answer is 'Duodenum'.

The hormone secretin is produced by 

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

  1. Pancreas and influences the conversion of glycogen to glucose

  2. Adrenal gland and accelerates heart beat

  3. Testis and produces male secondary sex characters

  4. Small intestine and stimulates pancreas

Show answer
Correct Option: D
Explanation:
A. Insulin is secreted from the pancreas and influences the conversion of glycogen to glucose.
B. Adrenaline is secreted from the adrenal gland and accelerates the heart beat.
C. Testosterone is secreted from testis and produces male secondary sex characters.
D. Secretin is secreted by the duodenum i.e. small intestine and stimulates the secretion of pancreatic juice.
So, the correct answer is 'Small intestine and stimulates pancreas'.

Pancreatic enzyme and bicarbonate secretion is stimulated by 

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

  1. Gastrin

  2. Cholecystokin

  3. Duocrinin

  4. Enterogastrone

Show answer
Correct Option: B
Explanation:
A. Gastrin is secreted from stomach and stimulates the secretion of gastric juices.
B. Cholecystokinin is secreted by from duodenum and stimulates secretion of pancreatic juice.
C. Duocrinin is secreted from intestine and stimulates the secretion of intestinal fluid.
D. Enterogastrone is secreted from duodenum and inhibits the secretion of gastric juice.
So, the correct answer is 'Cholecystokin'.

Cholecystokinin and enterocrinin are secreted by 

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

  1. Intestine

  2. Pancreas

  3. Adrenal cortex

  4. Thyroid gland

Show answer
Correct Option: A
Explanation:
Cholecystokinin is secreted from the duodenum and causes contraction of gall bladder and secretion of pancreatic juice into duodenum. Enterocrinin is secreted from duodenum and stimulates release of alkaline mucus from the intestinal glands.
  • Pancreas is a heterocrine gland as it acts both as endocrine and exocrine gland. It secretes insulin hormone into blood and act as endocrine gland and when it secretes digestive enzymes and juice through pancreatic duct, it acts as exocrine gland.
  • Adrenal cortex is part of adrenal gland and secretes glucocorticoids (cortisol,) mineralocorticoids (aldosterone) and sexocorticoids (androgens).
  • Thyroid gland is situated between the trachea and larynx in the neck and secretes thyroxine hormone which increases oxygen consumption by metabolically active tissues.
 Hence, cholecystokinin and enterocrinin are secreted from duodenum (part of small intestine).
So, the correct answer is 'Intestine'.

Gastric secretion is stopped by hormone

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

  1. Enterogastrone

  2. Gastrin

  3. Pancreozymin

  4. Cholecystokinin

Show answer
Correct Option: A
Explanation:
A. Enterogastrone is secreted from the duodenal mucosa and decreases the secretion of gastric juices.
B. Gastrin is secreted in stomach by the parietal cells and stimulates the secretion of gastric juices from the gastric glands.
C. Pancreozymin is the former name of Cholecystokinin.
D. Cholecystokinin is secreted from the duodenum and causes contraction of gall bladder and secretion of pancreatic juice into duodenum.
Hence, gastric secretion is stopped by Enterogastrone.
So, the correct answer is 'Enterogastrone'.

The hormone which brings about the contraction of gall bladder is

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

  1. Oxytocin

  2. Gastrin

  3. Cholecystokinin

  4. Secretin

Show answer
Correct Option: C
Explanation:
A. Oxytocin is secreted from the posterior pituitary and helps in the contraction of uterus during childbirth and also stimulates release of milk from mammary glands i.e. lactation.
B. Gastrin is secreted in stomach by the parietal cells and stimulates the secretion of gastric juices from the gastric glands.
C. Cholecystokinin is secreted from the duodenum and causes contraction of gall bladder and secretion of pancreatic juice into duodenum.
D. Secretin is secreted in duodenum and stimulates the secretion of pancreatic juice but inhibits the secretion of gastric juices.
So, the correct answer is 'Cholecystokinin'.