Test: Introduction To Endocrine Glands And Hormones, Hypothalamus


5 Questions MCQ Test Biology Class 11 | Test: Introduction To Endocrine Glands And Hormones, Hypothalamus


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QUESTION: 1

Which of the following is NOT an endocrine gland?

Solution:

Endocrine glands are ductless glands of the endocrine system that secrete their products, hormones, directly into the blood. The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.

QUESTION: 2

Hormones secreted by the hypothalamus show their influence on

Solution:

The pituitary gland is a tiny organ, the size of a pea, found at the base of the brain. As the “master gland” of the body, it produces many hormones that travel throughout the body, directing certain processes or stimulating other glands to produce other hormones.

QUESTION: 3

Which hormone among these is not secreted by an endocrine gland?

Solution:

ANF (i.e. atrial natriuretic factor) is secreted by the atrial walls of the heart. It is responsible for a decrease in blood pressure. When the blood pressure is increased, ANF which is secreted dilates the blood vessels causing a decrease in blood pressure.

QUESTION: 4

Who is known as the ‘father of endocrinology’?

Solution:

Thomas Addison was the first person who showed the relation between the secretion of the adrenal gland and Addison’s disease named after him.

QUESTION: 5

Erythropoietin stimulated by the juxtaglomerular cells is a

Solution:

Erythropoietin is a  peptide hormone produced primarily by juxtaglomerular cells of the kidney.
Erythropoietin stimulates the bone marrow to produce more red blood cells.
The resulting rise in red cells increases the oxygen-carrying capacity of the blood.
 As the prime regulator of red cell production, erythropoietin's major functions are to promote the development of red blood cells. Hence, Juxtaglomerular cells of kidney produce a peptide hormone called Erythropoietin.