Chemical Coordination and Integration Test 34

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Chemical Coordination and Integration Test 34

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Weekly Quiz Competition

Question 1
1 / -0

Match the following
Column I Column II
a. Adrenaline 1. Myxoederna
b. Hyperparathyroidism 2. Accelerates heartbeat
c. Oxytocin 3. Water balance
d. Hypothyroidism 4. Childbirth
e. Aldosterone 5. Demineralization

A
a- 2, b- 5, c- 4, d- 1, e- 3

B
a- 5, b- 3, c- 2, d- 4, e- 1

C
a- 3, b- 4, c- 5, d- 1, e- 2

D
a- 2, b- 3, c- 4, d- 5, e- 1

Solution

A. Adrenaline is secreted from adrenal medulla in response to stress condition in the body. It accelerates heartbeat of the body.
B. Hyperparathyroidism occurs due to hypersecretion of parathormone which increases blood calcium level by increasing the reabsorption of calcium from the bones. Hence, over secretion of parathormone causes demineralization of bones.
C. Oxytocin induces uterine contractions and dilation of cervix during childbirth.
D. Hypothyroidism is hyposecretion of thyroid hormone which causes myxoedema in adults.
E. Aldosterone is a mineralocorticoid which maintains water balance in body by stimulating sodium reabsorption.
So, the correct answer is ' a- 2, b- 5, c- 4, d- 1, e- 3'.
Question 2
1 / -0

In thyroid follicles, the epithelial tissue is

A
Squamous

B
Cuboidal

C
Transitional

D
Columnar

Solution

Thyroid gland is present in the form of two lobes on either side of trachea. This gland is composed of stromal tissue and follicles. The follicle cells secrete thyroxine hormone that regulates the metabolic rate of body. Follicular cells have simple cuboidal epithelium and are arranged in the form of spherical follicles.
So, the correct answer is 'Cuboidal'.
Question 3
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Due to deficiency of which hormone, bones becomes weak in female?

A
ACTH

B
TSH

C
Progesterone

D
Oestrogen

Solution

Osteoporosis (fragile or weak bones) is very common in women during their menopause because of the depletion of the oestrogen levels in their blood. Oestrogen is a sex hormone which is important for female bone health because it promotes the activity of osteoblasts, which are cells involved in the formation of bone. Thus, the correct option is D.
Question 4
1 / -0

Which of the following is not correct for the effect of parathormone?

A
It encourages the activity of osteoclast

B
It stimulates absorption of $$Ca^{2+}$$ from the intestinal tract

C
It lowers blood $$Ca^{2+}$$ level

D
In its deficiency, body shivers due to constant muscle contraction

Solution

Parathormone (PTH) is a hypercalcemic and hypophosphatemic hormone secreted from the parathyroid gland. It increases blood calcium level and decreases blood phosphate level. PTH also increases reabsorption of calcium ions in distal tubules. On a longer time scale, PTH stimulates osteoclasts and osteoblasts, with the effect on osteoclasts predominating so that more $$Ca^{2+}$$ is mobilized from bone to blood. Thus the correct answer is option C.
Question 5
1 / -0

Steroid hormones easily pass through plasma membrane by simple diffusion because they

A
Are lipid soluble

B
Are water soluble

C
Enter through pores

D
Contain carbon and hydrogen

Solution

Steroid hormones are made up of fats and they are not soluble in water. They are hydro phobic in nature. Hence they can easily pass through the plasma membrane by simple diffusion.
So, the answer is 'Are lipid soluble'.
Question 6
1 / -0

Function of pineal gland is to

A
Control sexual behaviour

B
Regulate period of puberty

C
Lighter skin colour

D
All of the above

Solution

Pineal gland is a small, stalked and rounded gland present on the dorsal side of forebrain. This gland secretes melatonin hormone which regulates many important functions in the body like circadian rhythm of the body, sleep-wake cycle, body temperature etc. It also regulates pigmentation and control sexual behaviour. Melatonin also influences menstrual cycle. In man, at the time of puberty, pineal gland starts to get calcified and the calcium deposits are known as brain sand. Thus, it also regulate puberty period.
So, the correct answer is 'All of the above'.

Question 7

1 / -0

Choose the correct combination

	Hormone	Source	Function
A.	Vasopressin	Posterior pituitary	Increases loss of water through urine
B.	Norepinephrine	Adrenal medulla	Increases heart beat, respiration and alertness
C.	Glucagon	$$\beta$$- cells of islet of Langerhans	Stimulates glycogenolysis
D.	Prolactin	Posterior pituitary	Regulates growth of mammary glands and milk formation in females.

A

B

C

D

Solution

A. Vasopressin is secreted from posterior pituitary and it stimulates water reabsorption in kidneys, thereby decreasing the rate of urine production.

B. Norepinephrine or noradrenaline, is secreted from adrenal medulla in response to stress conditions in the body. It increases alertness, heartbeat, strength of heart contraction and rate of respiration.

C. Glucagon is secreted from cells of islets of Langerhans in pancreas. It increases blood glucose level by stimulating breakdown of glycogen i.e. glycogenolysis and formation of glucose i.e. gluconeogenesis.

D. Prolactin is secreted from anterior pituitary. It stimulates production of milk in mammary glands in females.

Hence, option B shows the correct combination.

So, the correct answer is 'B'.

Question 8
1 / -0

Parathormone influences calcium absorption in small intestine by regulating metabolism of

A
Vitamin C

B
Vitamin D

C
Vitamin B

D
Enterogastrone

Solution

Parathormone is secreted from the parathyroid hormone and increases blood calcium level by increasing the reabsorption of calcium from the bones. Parathormone increases calcium absorption in small intestine by regulating metabolism of vitamin D because it stimulates osteoclasts. These are the cells that cause breakdown by dissolution of calcium from bone and thus, concentration of calcium is increased in blood.
So, the correct answer is 'Vitamin D'.
Question 9
1 / -0

Which of these is not a placental hormone?

A
Progesterone

B
HCG

C
Estrogen

D
Melatonin

Solution

Melatonin is secreted from pineal gland. This hormone regulates circadian rhythm of body like sleep-wake cycle, temperature of body etc. It also maintains pigmentation, metabolism and defence capability.
Progesterone, estrogen and HCG (Human chorionic gonadotropin) are secreted from placenta during pregnancy. In addition to placenta, progesterone is also secreted from corpus luteum and estrogen is also secreted from ovarian follicles.
So, the correct answer is 'Melatonin'.
Question 10
1 / -0

Low Ca$$^{2+}$$ in body fluid may be the reason for

A
Anaemia

B
Angina pectoris

C
Gout

D
Tetany

Solution

Low calcium levels in body cause hypocalcaemia. This may cause tetany, a disorder that occurs due to deficiency of parathormone. Parathormone is secreted from the parathyroid gland and increases blood calcium level by increasing the reabsorption of calcium from the bones. When parathormone levels are low, calcium level also gets decreased and this cause muscular spasms, a symptom of tetany. The muscles contract involuntarily and this causes painful cramps.
So, the correct answer is 'Tetany'.

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	Column I		Column II
a.	Adrenaline	1.	Myxoederna
b.	Hyperparathyroidism	2.	Accelerates heartbeat
c.	Oxytocin	3.	Water balance
d.	Hypothyroidism	4.	Childbirth
e.	Aldosterone	5.	Demineralization

Chemical Coordination and Integration Test 34

Result

Chemical Coordination and Integration Test 34

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Question 1

a- 2, b- 5, c- 4, d- 1, e- 3

a- 5, b- 3, c- 2, d- 4, e- 1

a- 3, b- 4, c- 5, d- 1, e- 2

a- 2, b- 3, c- 4, d- 5, e- 1

Solution

Question 2

Squamous

Cuboidal

Transitional

Columnar

Solution

Question 3

ACTH

TSH

Progesterone

Oestrogen

Solution

Question 4

It encourages the activity of osteoclast

It stimulates absorption of $$Ca^{2+}$$ from the intestinal tract

It lowers blood $$Ca^{2+}$$ level

In its deficiency, body shivers due to constant muscle contraction

Solution

Question 5

Are lipid soluble

Are water soluble

Enter through pores

Contain carbon and hydrogen

Solution

Question 6

Control sexual behaviour

Regulate period of puberty

Lighter skin colour

All of the above

Solution

Question 7

A

B

C

D

Solution

Question 8

Vitamin C

Vitamin D

Vitamin B

Enterogastrone

Solution

Question 9

Progesterone

HCG

Estrogen

Melatonin

Solution

Question 10

Anaemia

Angina pectoris

Gout

Tetany

Solution

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