Chemical Coordination and Integration Test -3

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Chemical Coordination and Integration Test -3

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Weekly Quiz Competition

Question 1
1 / -0

The hormone causing release of milk after the birth of young one is :

A
Oxytocin

B
Prolactin

C
relaxin

D
progesterone

Solution

Mammary glands start releasing milk after parturition. The hormone causing release of milk after the birth of young one is Oxytocin.
Question 2
1 / -0

Thermostat for the body is :

A
hypothalamus

B
adrenal

C
pineal

D
pituitary

Solution

The body keeps its core temperature constant at about 37^o Celsius by physiological adjustment controlled by hypothalamus, so called thermostat center.
Question 3
1 / -0

Hormone which acts on hypothalamus to decrease food intake, stimulate satiety and increase energy output is :

A
Gastrin

B
Growth hormone

C
Leptin

D
Secretin

Solution

Leptin hormone acts on hypothalamus to decrease food intake, stimulate satiety and increase energy output. Leptin hormone is made by adipose cells.

Question 4

1 / -0

Match the following :

Hormone	Target tissue/cell
a) Follicle stimulating hormone	i) liver
b) Luteinising hormone	ii) kidney tubule
c) Cortisol	iii)sertoli cells
d) Aldosterone	iv) interstitial cells

a)-iv, b)-iii, c)-ii, d)-i

a)-iii, b)-ii, c)-i, d)-iv

a)-iv, b)-iii, c)-i, d)-ii

a)-iii, b)-iv, c)-i, d)-ii

Solution

Follicle stimulating hormone acts on sertoli cells. Luteinsing hormone acts on interstitial cells. Cortisol cells acts on liver and Aldosterone hormone acts on kidney tubule.

Question 5
1 / -0

Read the following :

i. Major pineal hormone is melatonin.
ii. In human beings, melatonin secretion increases in light and decreases in dark.
iii. Abnormally high levels of melatonin in children causes delayed sexual development.

A
only i) and ii) are correct.

B
only i) and iii) are correct.

C
only i) is correct.

D
all are correct.

Solution

Melatonin is a hormone secreted by the pineal gland in the brain. In helps regulate other hormones and maintains the body circadian rhythm. Abnormally high levels of melatonin is children causes delayed sexual development.
Question 6
1 / -0

Insulin is _____ hormone

A
glycogenolytic

B
catabolic

C
anabolic

D
neuro

Solution

Insulin is anabolic hormone because this hormone helps in conversion of glucose into glycogen.
Question 7
1 / -0

Which of the following hormones will stimulate gluconeogenesis?

A
mineralocorticoids and insulin

B
glucocorticoids and insulin

C
mineralocorticoids and glucagon

D
glucocorticoids and glucagon

Solution

Glucocorticoids stimulate gluconeogenesis. Similarly, glucagon also stimulates the process of gluconeogenesis which also contributes to hyperglycemia.
Question 8
1 / -0

Shekhar is 3 years old and he lives in hilly areas. He has swollen neck :

i. He is suffering from goitre caused due to iodine deficiency which may lead to cretinism.
ii. Goitre may lead him to myxoedema and Grave’s disease in future.

A
Statement ii) is wrong and i) is correct.

B
Statement ii) is correct and i) is wrong.

C
both are correct.

D
both are wrong.

Solution

The persons living in hilly areas generally suffer from goiter disease. Goiter is caused due to iodine deficiency which may leads to cretinism. Goiter never leads to myxedemaor hypothyroidism.
Question 9
1 / -0

A chemical acts slowly, requiring hours to take effect. It may pass in and out of many cells in which they have no effect. When they find appropriate receptor in their target cell they bind to it. Chemical is :

A
somatotropin

B
adrenaline

C
aldosterone

D
oxytocin

Solution

Aldosterone hormone is a chemical that acts slowly, require hours to take effect. It may pass in and out of many cells in which they have no effect. When they find appropriate receptor in their target cell they bind to it to bring about changes.

Question 10

1 / -0

Match the following :

Hormone	Synonym
a) Adrenaline	i) birth hormone
b) Oxytocin	ii) moulting hormone
c) Ecdyson	iii)luteotropic hormone
d) Prolactin	iv) fight or flight hormone

a)-iv, b)-i, c)-ii, d)-iii

a)-iv, b)-iii, c)-ii, d)-i

a)-iv, b)-iii, c)-i, d)-ii

a)-iii, b)-iv, c)-ii, d)-i

Solution

Adrenaline hormone is called fight and flight hormone. Oxytocin is called birth hormone. Ecdyson is called moulting hormone and prolactin is called as luteotropic hormone.

Question 11
1 / -0

What is the effect of GnRH produced by hypothalamus?

A
Stimulates the synthesis and secretion of androgens

B
Stimulates secretion of milk in mammary glands

C
Stimulates foetal ejection reflex

D
Stimulates synthesis of carbohydrates from non-carbohydrates in liver

Solution

Gonadotropin-releasing hormone (GnRH) stimulates the anterior lobe of the pituitary gland to secrete two gonadotropic hormones, follicle stimulating hormone (FSH) and luteinising hormone (LH). In male LH activates the Leydig's (interstitial) cells of the testis to secrete androgens.
Question 12
1 / -0

The placental barrier between the maternal and foetal blood is minimum in

A
Goat

B
Pig

C
Cow

D
Human

Solution

Maximum number of barriers present in some mammals is six, but in human beings only three barriers are present.
So, the correct answer is 'Human'
Question 13
1 / -0

The total islets of Langerhans in human pancreas are

A
1 million

B
2 million

C
5000

D
1000

Solution

Islets of Langerhans, also called islands of Langerhans are irregularly shaped patches of endocrine tissue located within the pancreas of most vertebrates. They are named for the German physician Paul Langerhans, who first described them in 1869. The normal human pancreas contains about 1,000,000 islets. The islets consist of four distinct cell types, of which three produce important hormones (alpha cells producing glucagon; beta cells producing insulin and delta cells producing somatostatin). Hormones produced in the islets of Langerhans are secreted directly into the blood flow. The fourth component PP cells secretes pancreatic polypeptide. The combined mass of the islets is 1 to 1.5 grams.
Question 14
1 / -0

The blood sugar level is regulated by

A
Pancreas

B
Thyroid

C
Anterior pituitary

D
Posterior pituitary

E
Hypothalamus

Solution

The antagonistic function of insulin and glucagon hormones of pancreas maintains blood glucose level. Insulin lowers the blood glucose level by stimulating the uptake of glucose by cells while glucagon stimulates the breakdown of glycogen into glucose to increase the blood sugar level. Thyroid hormones regulate the metabolic rate while anterior pituitary control hormonal secretion of other glands. Posterior pituitary releases vasopressin and oxytocin. The hypothalamus regulates pituitary gland by regulatory hormones. Thus, the correct answer is option
Question 15
1 / -0

The gland which regulates blood sugar levels is/are

A
Pancreas

B
Thyroid

C
Anterior pituitary

D
Posterior pituitary

E
Hypothalamus

Solution

The pancreas is a 6 inch-long flattened gland that lies deep within the abdomen, between the stomach and the spine. It is connected to the duodenum, which is part of the small intestine.
The pancreas maintains the body's blood glucose (sugar) balance.
Primary hormones of the pancreas include insulin and glucagon, and both regulate blood glucose. Glucagon helps insulin maintain normal blood glucose by working in the opposite way of insulin. It stimulates our cells to release glucose, and this raises our blood glucose levels. Insulin hormone regulates blood glucose by allowing many of our body’s cells to absorb and use glucose. In turn, this drops blood glucose levels.
Therefore, the correct answer is option A.
Question 16
1 / -0

Which of the following is an emergency hormone

A
Pituitary

B
Prolactin

C
Progesterone

D
Adrenalin
Solution
- Adrenaline whips up metabolism to prepare the animal to face special physical or mental stress.
- It increases the heart rate and blood pressure, expands the air passages of the lungs, enlarges the pupil in the eye, and stimulates the breakdown of liver and muscle glycogen to provide more glucose for respiration.
So, the correct answer is option D.
Question 17
1 / -0

Name the hormone which helps in the body building effect on the body.

A
Thyroxine

B
Growth hormone

C
Testosterone

D
Adrenaline
Solution
- The effects of growth hormone on the tissues of the body can generally be described as anabolic (building up).
- Like most other protein hormones, GH acts by interacting with a specific receptor on the surface of cells. Increased height during childhood is the most widely known effect of GH.
Therefore, the correct answer is option B.
Question 18
1 / -0

The source of male sex hormones is

A
Interstitial cells of the testis

B
Cells lining the seminal vesicles

C
Cells lining vas deferens

D
The acrosomal vesicles
Solution
- Leydig cells are also known as interstitial cells of the testis. They are found adjacent to the seminiferous tubules in the testicle.
- The Interstitial cells of the testis produce testosterone(male sex hormone) in the presence of the luteinizing hormone (LH).
- In male humans, testosterone plays a key role in the development of male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.
- Hence the source of male sex hormones is Interstitial cells of the testis.
- So, the correct answer is 'Interstitial cells of the testis'.
Question 19
1 / -0

A hormone that stimulates an endocrine gland to grow and secrete its hormone is known as

A
Endocrine hormone

B
Tropic hormones

C
Exocrine hormone

D
None of these
Solution
- A tropic hormone is a hormone that stimulates an endocrine gland to grow and secrete its hormones. (One hormone causes another hormone to do something)
- In humans, tropic hormones are secreted by the adenohypophysis(anterior pituitary gland). Hence, A hormone that stimulates an endocrine gland to grow and secrete its hormone is known as Tropic hormones
So, the correct answer is 'Tropic hormones'.
Question 20
1 / -0

Thyroxin is secreted by which gland?

A
Adrenal

B
Parathyroid

C
Pituitary

D
Thyroid

Solution

The thyroid gland is an endocrine gland at the front of the neck, just below the Adam's apple; it is made up of two lobes lying along the trachea joined by a thin band of thyroid tissue called the isthmus. The thyroid gland is controlled by the pituitary gland, situated at the base of the brain. The pituitary gland stimulates the production of $$T_3$$ and $$T_4$$ by producing Thyroxin Stimulating Hormone (TSH), thyrotropin when the levels of thyroid hormones are low. Once $$T_3$$ and $$T_4$$ levels are high enough TSH levels decrease and the production of thyroid hormones decreases. The Pituitary gland is regulated by the hypothalamus which is part of the brain and secretes TSH Releasing Hormone, TRH.
So, the correct option is option D.

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Chemical Coordination and Integration Test -3

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Question 1

Oxytocin

Prolactin

relaxin

progesterone

Solution

Question 2

hypothalamus

adrenal

pineal

pituitary

Solution

Question 3

Gastrin

Growth hormone

Leptin

Secretin

Solution

Question 4

a)-iv, b)-iii, c)-ii, d)-i

a)-iii, b)-ii, c)-i, d)-iv

a)-iv, b)-iii, c)-i, d)-ii

a)-iii, b)-iv, c)-i, d)-ii

Solution

Question 5

only i) and ii) are correct.

only i) and iii) are correct.

only i) is correct.

all are correct.

Solution

Question 6

glycogenolytic

catabolic

anabolic

neuro

Solution

Question 7

mineralocorticoids and insulin

glucocorticoids and insulin

mineralocorticoids and glucagon

glucocorticoids and glucagon

Solution

Question 8

Statement ii) is wrong and i) is correct.

Statement ii) is correct and i) is wrong.

both are correct.

both are wrong.

Solution

Question 9

somatotropin

adrenaline

aldosterone

oxytocin

Solution

Question 10

a)-iv, b)-i, c)-ii, d)-iii

a)-iv, b)-iii, c)-ii, d)-i

a)-iv, b)-iii, c)-i, d)-ii

a)-iii, b)-iv, c)-ii, d)-i

Solution

Question 11

Stimulates the synthesis and secretion of androgens

Stimulates secretion of milk in mammary glands

Stimulates foetal ejection reflex

Stimulates synthesis of carbohydrates from non-carbohydrates in liver

Solution

Question 12

Goat

Pig

Cow

Human

Solution