Question

Erythropoietin hormone which stimulates R.B.C. formation is produced by:

• A. Juxtaglomerular cells of the kidney
• B. Alpha cells of pancreas
• C. The cells of rostral adenohypophysis
• D. The cells of bone marrow

Answer 1

The correct option is A Juxtaglomerular cells of the kidney

Apart from the organised endocrine glands, hormones are also produced by organs such as the heart, kidneys and gastrointestinal tract.

Erythropoietin is a protein hormone produced by the juxtaglomerular cells of the kidney. It stimulates the process of RBC (erythrocyte) formation called erythropoiesis. RBCs are produced by the haemopoietic stem cells of the bone marrow.

The alpha cells of pancreas secrete glucagon hormone. It plays a major role in maintaining blood glucose levels in the blood. It is a hyperglycemic hormone as it elevates the blood glucose level.

Adenohypophysis (anterior pituitary) has two parts: pars distalis and pars intermedia. Rostral adenohypophysis of the pars distalis secretes various tropic hormones.