Chemical Coordination and Integration Test 47

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Chemical Coordination and Integration Test 47

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Weekly Quiz Competition

Question 1
1 / -0

Increase in bleeding time and delay in blood coagulation is due to the deficiency of which hormone?

A
Thyroxine

B
Adrenaline

C
Noradrenaline

D
Parathormone
Solution
- In humans, four parathyroid glands are present on the back side of the thyroid gland, one pair each in the two lobes of the thyroid gland.
- The parathyroid glands secrete a peptide hormone called parathyroid hormone (PTH) or parathormone.
- Parathormone increases the $$Ca^{2+}$$ levels in the blood.
- Increase in bleeding time and delay in blood coagulation is due to the deficiency of parathormone because its deficiency causes a decrease in blood calcium levels and calcium ion is essential for blood coagulation.
- So, the correct answer is 'Parathormone'.

Question 2

1 / -0

Match the following.

Sr.no	Column -I	Sr.no	Column -II
A.	Testosterone	1.	Sexual contraction in male
B.	Atrial natriuretic factor	2.	Decrease in blood pressure
C.	Glucagon	3.	Decrease in liver glycogen content
D.	Epinephrine	4.	Increases in heartbeat

A-1, B-2, C-3, D-4

A-1, B-3, C-2, D-4

A-3, B-4, C-1, D-2

A-3, B-4, C-2, D-1

Solution

Testosterone hormones is secreted by the Leydig cells in testes in men. It It causes sexual contraction in male. Atrial natriuretic factor hormone is secreted by heart atria. In decreases the blood pressure. Glucagon hormone is secreted by the alpha cells of Islets of Langerhands. It stimulates glycogenolysis in the liver. It converts glycogen present in the liver into glucose. Hence, it decreases glycogen content in liver. Epinephrine is secreted by adrenal medulla. It increases heartbeat and blood pressure. It also increases rate of respiration.

Thus, the correct answer is 'A-1, B-2, C-3, D-4.'

Question 3
1 / -0

Which hormone is known as the emergency hormone in our body?

A
Insulin

B
Adrenaline Hormones

C
Androgen

D
Oxytocin and vasopressin

Solution

Adrenaline hormone is also called as emergency hormone. It is secreted by the adrenal medulla during stress condition. It allows the body to response quickly during emergency or stress condition. It increases the heart rate, increases the blood pressure, dilates the pupil, dilates the blood vessels, increases the metabolic rate.
Thus, the correct answer is 'Adrenaline hormones.'
Question 4
1 / -0

How many of the given hormones act on the target cells by binding to intracellular receptors?
a. Iodothyronines
b. Somatostatin
c. Estradiol
d. Cortisol
e. Oxytocin
f. Aldosterone

A
Two

B
Three

C
Four

D
Five
Solution
Hormones that act on the target cells by binding to intracellular receptors are steroids.
a. Iodothyronines - thyroid hormones
b. Somatostatin - polypeptide hormone
c. Estradiol - steroid hormone
d. Cortisol - steroid hormone
e. Oxytocin - steroid hormone
f. Aldosterone - steroid hormone

So, the correct option is C.
Question 5
1 / -0

Melatonin is modified

A
Amino acid

B
Peptide

C
Steroid

D
Protein
Solution
- Melatonin is a hormone that regulates sleep-wake cycles. It is primarily released by the pineal gland.
- As a supplement, it is often used for the short-term treatment of trouble sleeping such as from jet lag or shift work.
- Melatonin is a hormone which is a protein made up of amino acids.
- Hence, Melatonin is a modified Amino acid.
- So, the correct answer is 'amino acid'.
Question 6
1 / -0

Master gland of the body is ________

A
Pituitary Gland

B
Adrenal gland

C
Thyroid gland

D
None of the above

Solution

The pituitary gland is called as master gland because its hormones control other parts of the endocrine glands, namely the thyroid gland, adrenal glands, ovaries, and testes.
It is a small structure in the head. It is called the master gland because it produces hormones that control other glands and many body functions including growth
So the answer is 'Pituitary Gland'.
Question 7
1 / -0

Atrial natriuretic factor is released in response to

A
Decrease in GFR

B
Decrease in blood pressure

C
Decrease in filtrate passing through DCT

D
Increase in blood pressure

Solution

In response to high blood pressure, atrial wall secretes ANF(Atrial Natriuretic Factor) which checks the RAAS(Renin Angiotensin Aldosterone System). RAAS gets activated by a decrease in GFR(Glomerular Filtration Rate). The ANF causes vasodilation. Moreover, it inhibits Renin-Aldosterone and ADH release.
So, the correct answer is 'Increase in blood pressure'.
Question 8
1 / -0

Which of these hormones may have a primary role in many circadian rhythms?

A
Insulin

B
Estradiol

C
Melatonin

D
Epinephrine

Solution

The circadian rhythm or 24 hours diurnal rhythm of our body is maintained by Melatonin hormone secreted from the Pineal gland which is located on the dorsal side of forebrain. In addition, the melatonin hormone even assist in metabolism, pigmentation and even maintaining our defence capabilities.
So, the correct answer is 'Melatonin'.
Question 9
1 / -0

Which of the following is NOT produced by kidneys?

A
Calcitriol

B
Erythropoietin

C
Angiotensinogen

D
Renin

Solution

Calcitrol is produced by the cells of the proximal tubule of the nephron in the kidneys. Erythropoietin is also produced by the kidney. Renin is secreted by the juxtaglomerular kidney cells. Angiotensinogen is a component of the renin-angiotensin (RAS) system and is released into circulation mainly by the liver. So, the correct answer is 'Angiotensinogen'.
Question 10
1 / -0

Which of the following statements is false?

A
Hindbrain contains medulla, pons and cerebellum

B
Thalamus is an important sensory relay structure

C
Cerebral cortex in humans is folded into convolutions

D
Hypothalamus has an important role in recognising and experiencing
Solution
Correct option: D
Explanation:
The hindbrain majorly consists of the medulla oblongata, pons and cerebellum.
The main function of the thalamus is to relay motor and sensory signals to the cerebral cortex.
The cerebral cortex in humans has several folds known as the gyrus.
Hypothalamus is majorly important for controlling the release of several hormones in our body. It also regulates body temperature.
So the correct answer is ' Hypothalamus has an important role in recognising and experiencing'.

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Chemical Coordination and Integration Test 47

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Chemical Coordination and Integration Test 47

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Question 1

Thyroxine

Adrenaline

Noradrenaline

Parathormone

Solution

Question 2

A-1, B-2, C-3, D-4

A-1, B-3, C-2, D-4

A-3, B-4, C-1, D-2

A-3, B-4, C-2, D-1

Solution

Question 3

Insulin

Adrenaline Hormones

Androgen

Oxytocin and vasopressin

Solution

Question 4

Two

Three

Four

Five

Solution

Question 5

Amino acid

Peptide

Steroid

Protein

Solution

Question 6

Pituitary Gland

Adrenal gland

Thyroid gland

None of the above

Solution

Question 7

Decrease in GFR

Decrease in blood pressure

Decrease in filtrate passing through DCT

Increase in blood pressure

Solution

Question 8

Insulin

Estradiol

Melatonin

Epinephrine

Solution

Question 9

Calcitriol

Erythropoietin

Angiotensinogen

Renin

Solution

Question 10

Hindbrain contains medulla, pons and cerebellum

Thalamus is an important sensory relay structure

Cerebral cortex in humans is folded into convolutions

Hypothalamus has an important role in recognising and experiencing

Solution

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