Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Chemical Coordination and Integration

Question:

Match column I with column II and select the correct option from the given codes:

  Column I         Column II
A.     Atrial natriuretic factor (i)   Stimulates secretion of water and bicarbonate ions.
B. Erythropoietin (ii)  Stimulates the secretion of pancreatic enzymes and bile juice.
C. Secretin (iii)  Decreases blood pressure.
D. Cholecystokinin (iv)  Formation of RBC

 

Options:

A-(ii), B-(iv), C-(i), D-(iii).

A-(iii), B-(iv), C-(i), D-(ii).

A-(iv), B-(iii), C-(i), D-(ii).

A-(ii), B-(iii), C-(i), D-(iv).

Correct Answer:

A-(iii), B-(iv), C-(i), D-(ii).

Explanation:

The correct answer is Option (2) - A-(iii), B-(iv), C-(i), D-(ii).

  Column I         Column II
A.     Atrial natriuretic factor (iii)  Decreases blood pressure.
B. Erythropoietin (iv)  Formation of RBC
C. Secretin (i)   Stimulates secretion of water and bicarbonate ions.
D. Cholecystokinin (ii)  Stimulates the secretion of pancreatic enzymes and bile juice.

Hormones are also secreted by some tissues which are not endocrine glands. For example, the atrial wall of our heart secretes a very important peptide hormone called atrial natriuretic factor (ANF), which decreases blood pressure. When blood pressure is increased, ANF is secreted which causes dilation of the blood vessels. This reduces the blood pressure.

The juxtaglomerular cells of kidney produce a peptide hormone called erythropoietin which stimulates erythropoiesis (formation of RBC).

Endocrine cells present in different parts of the gastro-intestinal tract secrete four major peptide hormones, namely gastrin, secretin, cholecystokinin (CCK) and gastric inhibitory peptide (GIP). Gastrin acts on the gastric glands and stimulates the secretion of hydrochloric acid and pepsinogen. Secretin acts on the exocrine pancreas and stimulates secretion of water and bicarbonate ions. CCK acts on both pancreas and gall bladder and stimulates the secretion of pancreatic enzymes and bile juice, respectively. GIP inhibits gastric secretion and motility.