Chemical Coordination and Integration Test -2

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Chemical Coordination and Integration Test -2

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is not a mixed/composite gland?

A
Pineal

B
Pancreas

C
Testis

D
Ovary

Solution

A gland that contain both exocrine and endocrine portion is called mixed or composite gland. These glands secretes both hormone and enzymes. Pineal gland is an example of endocrine gland.
Question 2
1 / -0

By chemical nature, hormones are never :

A
amino acid derivatives

B
monosaccharide derivatives

C
steroids

D
proteins

Solution

Hormones are generally protein components having amino acids as well as steroids. Hormones are generally not monosaccharide derivatives in nature.
Question 3
1 / -0

Glucocorticoids regulate metabolism of :

A
only carbohydrates

B
proteins and carbohydrates

C
carbohydrates,lipids and proteins

D
fats and carbohydrates

Solution

The name glucocorticoid (glucose + cortex + steroid) is composed from its role in regulation of glucose metabolism, synthesis in the adrenal cortex, and its steroidal structure.

The principal glucocorticoid hormone is cortisol, which regulates the metabolism of proteins, carbohydrates, and lipids.
Question 4
1 / -0

The hormone secreted by pars intermedia of hypophysis is

A
MSH

B
ACTH

C
TSH

D
GH

Solution

The hormone secreted by pars intemedia of hypophysis is melanocyte-stimulating hormones (MSH). MSH is a peptide hormone also knownas melanotropins.
Question 5
1 / -0

Adrenal medulla consists of a cluster of _____ nerves and those cells are also known as _____ cells :

A
parasympathetic , clear

B
parasympathetic , follicular

C
sympathetic , chromaffin

D
sympathetic , paraffin

Solution

Adrenal medulla consists of a cluster of sympathetic nerves and those cells are also known as chromaffin cells. Adrenal medulla is part of the adrenal gland located at the center of the adrenal gland.
Question 6
1 / -0

Process of parturition is facilitated by :

A
Gonadotropins

B
Oxytocin

C
Relaxin

D
both relaxin and Oxytocin

Solution

The process of parturition begins after completion of gestation period. The muscles present in uterus start contracting due to release of hormone relaxin and Oxytocin.
Question 7
1 / -0

The largest endocrine gland is

A
Testis

B
Pituitary

C
Pancreas

D
Thyroid

Solution

Thyroid is the largest endocrine gland present in human body. This gland release thyroxin hormone that help in metabolism of carbohydrates, fats and proteins.

Question 8

1 / -0

Match the following :

Hormone	Nature
a) Parathormone	i) Polypeptide
b) Oxytocin	ii) Amino acid Derivative
c) Sex hormone	iii) Peptide
d) Norepinephrine	iv) Steroid

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

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

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

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

Solution

Parathormoneis a polypeptide hormone. Oxytocin is peptide hormone. Sex hormone is a steroid hormone and Norepinephrine is a amino acid derivative.

Question 9
1 / -0

Old people usually exhibit weaker immune power due to degeneration of

A
Pineal gland

B
Thymus gland

C
Parathyroid gland

D
Hypothalamus

Solution

Thymus gland produces a hormone called thymosin which stimulates the T-cells. T-cells help in producing antibodies in the bodies. In older people weaker immune power is due to degeneration of thymus gland.
Question 10
1 / -0

Thyroid gland do not secrete

A
T₃

B
Melatonin

C
T₄

D
Calcitonin

Solution

Melatonin hormone is secreted by Pineal Gland.
Question 11
1 / -0

Endocrine glands are also called as ................. glands.

A
Exocrine

B
Ductless

C
Ducted

D
None of the above

Solution

Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct. So, they are called as ductless glands.
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 12
1 / -0

Which endocrine gland is associated with kidneys?

A
Thyroid

B
Pancreas

C
Adrenal

D
Pineal

Solution

Adrenal glands are located on the top of two kidneys. They are thus also called as supra renal gland.
Question 13
1 / -0

The LH surge is essentially a signal sent from the brain to the ovary,which indicates

A
Onset of implantation

B
An egg is mature

C
Fertilization

D
None of the above
Solution
- The LH surge causes the initiation of the process of ovulation.
- After ovulation, the follicle is transformed into the corpus luteum, which is stimulated by LH.
- It occurs roughly 36 hours before ovulation which indicates egg has matured and is ready for fertilisation. Hence, The LH surge is essentially a signal sent from the brain to the ovary, which indicates An egg is mature.
So, the correct answer is 'An egg is mature'.
Question 14
1 / -0

Erythropoietin is released by

A
Bone marrow

B
Spleen

C
Kidneys

D
Liver
Solution
- Erythropoietin is a hormone released by the kidney.
- It is a glycoprotein.
- This hormone helps in the proliferation and differentiation of erythrocyte precursors.
- Thus, they produce red blood cells (RBCs) from the bone marrow cells and this process is also known as erythropoiesis.
- The cells of the kidney that produces erythropoietin are sensitive to low oxygen levels in the blood that travels to the kidney.
- The extrarenal site for erythropoietin release is liver.
- So, the correct answer is 'Kidneys'.
Question 15
1 / -0

Synthesis of testosterone by Leydig cells is regulated by

A
FSH

B
TSH

C
LTH

D
ICSH

Solution

Luteinizing hormone (LH) in males is called ICSH (Interstitial cell stimulating hormone). It is secreted from anterior pituitary and stimulates the Leydig cells of testes to produce testosterone. It is male sex hormone that stimulates the development of secondary sex organs and sexual characters. It also stimulates spermatogenesis i.e. production of sperms from the germ cells.
So, the correct answer is 'ICSH'.
Question 16
1 / -0

The ions which plays major role in generating hormone action

A
Calcium ions

B
Magnesium ions

C
Sodium ions

D
None of these

Solution

The ions which plays major role in generating hormone action is calcium ions. They make bones strong and powerful.
Question 17
1 / -0

Deficiency of a hormone increase $$K^+$$ ion and decreases $$Na^+$$ ions in blood. It is secreted by

A
Zona fasciculata

B
Zona glomerata

C
Zona reticulata

D
Zona pellucide

Solution

Zona glomerata or glomerulosa is a superficial layer of adrenal cortex of adrenal gland which secretes aldosterone. It is a mineralocorticoid hormone which maintains electrolyte balance in the body. It stimulates the absorption of sodium from glomerular filtrate and promotes excretion of potassium. Therefore, it deficiency can cause increased potassium (K⁺⁾ ions and decreased sodium ions (Na⁺) concentration in the blood. Aldosterone also participates in RAAS (Renin-angiotensin-aldosterone-system).
So, the correct answer is 'Zona glomerata'.
Question 18
1 / -0

Somatostatin is produced by

A
Adenohypophysis

B
Neurohypophysis

C
Pineal gland

D
Basal part of diencephalon and Pancreas

Solution

Somatostatin is known as growth hormone-releasing inhibiting hormone. It inhibits the release of growth hormone from pituitary gland. Growth hormone stimulates body growth. Somatostatin is secreted from hypothalamus which represents basal part of diencephalon in forebrain. It inhibits the secretion of other pancreatic hormones such as insulin and glucagon.
So, the correct answer is 'Basal part of diencephalon'.
Question 19
1 / -0

Islets of Langerhans occur in _______________.

A
Liver

B
Stomach

C
Pancreas

D
Alimentary canal

Solution

The correct option is C.
The pancreatic islets or islets of Langerhans are the regions of the pancreas that contain its endocrine (hormone-producing) cells, discovered in 1869 by German pathological anatomist Paul Langerhans. The pancreatic islets constitute 1–2% of the pancreas volume and receive 10–15% of its blood flow.
Question 20
1 / -0

In mammals, the hormones secreted by the pituitary, the master gland, is itself regulated by

A
Hypothalamus

B
Median cortex

C
Pineal gland

D
Cerebrum

Solution

Pituitary, the master gland of which controls all other glands consist of two lobes and both the lobes are under the control of Hypothalamus. The hypothalamus releases a hypothalamic releasing hormone which controls the release of adrenal hormone into the blood circulation. The posterior lobe of pituitary as such does not produce any hormone but stores hypothalamic hormone for future use. Thus, the correct answer is option A.

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Chemical Coordination and Integration Test -2

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Chemical Coordination and Integration Test -2

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SHARING IS CARING

Question 1

Pineal

Pancreas

Testis

Ovary

Solution

Question 2

amino acid derivatives

monosaccharide derivatives

steroids

proteins

Solution

Question 3

only carbohydrates

proteins and carbohydrates

carbohydrates,lipids and proteins

fats and carbohydrates

Solution

Question 4

MSH

ACTH

TSH

GH

Solution

Question 5

parasympathetic , clear

parasympathetic , follicular

sympathetic , chromaffin

sympathetic , paraffin

Solution

Question 6

Gonadotropins

Oxytocin

Relaxin

both relaxin and Oxytocin

Solution

Question 7

Testis

Pituitary

Pancreas

Thyroid

Solution

Question 8

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

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

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

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

Solution

Question 9

Pineal gland

Thymus gland

Parathyroid gland

Hypothalamus

Solution

Question 10

T3

Melatonin

T4

Calcitonin

Solution

Question 11

Exocrine

Ductless

Ducted

None of the above

Solution

Question 12

Thyroid

Pancreas

Adrenal

Pineal

Solution

T₃

T₄