Calcium Homeostasis

Q.

What are antagonistic hormones? Give two examples.

Q. Which of the following is a water soluble hormone?

1. Thyroxine
2. Cortisol
3. Testosterone
4. Epinephrine

Q.

Which of the following do not play any role in calcium balance in the human body?

(a) Vitamin-D

(b) Parathyroid hormone

(c) Thyrocalcitonin

(d) Thymosin

Q.

Name a hypercalcemic hormone.

Q. Which of the following statements is/are true about parathyroid hormone?

1. It acts on bones and stimulates the process of bone resorption
2. All of the above
3. It stimulates reabsorption of calcium ions by the renal tubules
4. It increases calcium ions absorption from the digested food.

Q.

What Is The permissive function of Hormones?

Q.

What are the 3 calcium regulating hormones?

Q. What is erythropoiesis? Which hormone stimulates it?

Q. All are the functions of PTH except:

1. PTH stimulates bone resorption/dissolution/demineralisation
2. PTH decreases the blood calcium levels
3. PTH increases $C{a}^{+2}$ absorption from the digested food
4. PTH stimulates resorption of $C{a}^{+2}$ by the renal tubules

Q.

Which hormone opposes the action of parathyroid hormone?

Q.

What is the function of calcitonin?

1. It increases the calcium level in the blood

2. It decreases calcium levels in blood

3. It stimulates steroid synthesis

4. It increases the absorption of water in kidney tubules

Q. Which one of the following hormones increases the blood calcium levels ?

1. Adrenaline
2. Growth hormone
3. Thyroxine
4. Parathyroid hormone

Q. BMR is controlled by–

1. Thyroxine
2. ADH
3. Aldosterone
4. Growth hormone

Q. The hormone which promotes protein anabolism, absorption of calcium from the bowel and retards use of blood glucose for ATP production

1. Melatonin
2. Adrenaline
3. Growth hormone
4. Insulin

Q.

What Is The Action Of PTH On Bones?

Q. Which hormone exerts antagonistic action to parathyroid hormone?

1. Calcitonin
2. Thyroxine
3. Glucagon
4. Epinephrine

Q. Which of the following do not play any role in calcium balance in the human body?

1. Parathyroid hormone
2. Vitamin D
3. Thymosin
4. Thyrocalcitonin

Q. Peptide hormones are ________________ and steroid hormones are ___________________.

1. lipid insoluble and water soluble.
2. water soluble and lipid soluble.
3. lipid soluble and water insoluble
4. water insoluble and lipid soluble

Q.

Name atleast two hormones which result in fluctuation of $C{a}^{2+}$ level.

Q. Emergency hormone is otherwise called as

1. Dopamine
2. Acetylcholine
3. Cortisone
4. Adrenaline

Q.

How many glands of parathyroid are present?

Q. Anti Diuretic Hormone controls water permeability of

1. Collecting tube (distal part)
2. Proximal convoluted tubule
3. Distal convoluted tubule (distal part)
4. Both A and C

Q. Calcitonin

1. Elevates potassium level in blood
2. Lowers calcium level in blood
3. Elevates calcium level in blood
4. No effect on calcium

Q. Assertion :PTH is a hypercalcemic hormone. Reason: PTH stimulates the process of bone resorption.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q.

Given below is an example of a certain structure and its special functional activity. On a similar pattern, fill in the blank with a suitable functions.

e.g. Chloroplast and photosynthesis

Thyroid gland and __________.

Q. $C{a}^{2+}$ level in body is controlled by.

1. Adrenal gland
2. Parathyroid gland
3. Thyroid gland
4. Both (a) and (b)

Q. Select the incorrect pairs form the following.
A. Melanocyte stimulating hormone regulates skin pigmentation.
B. Diurnal rhythm of our body is regulated by the hormone melatonin.
C. The main glucocorticoid present in our body's cortisol.
D. Calcitonin is secreted by parathyroid gland.
E. Iodine is essential for the synthesis and secretion of parathyroid hormones.

1. A, C and D
2. A, B and D
3. D and E
4. B and D

Q. A person is having problem with calcium and phosphate metabolism in his body leading to thinning of bones.Which of the following should not be administered to treat his condition?

1. Calcitonin
2. Calcitriol
3. Parathormone
4. Vitamin -$D_3$

Q. The hormone that increases the rate of ${Ca}^{++}$ absorption from the gastrointestinal tract into the blood is

1. Aldosterone
2. Cholecystokinin
3. Calcitriol
4. Calcitonin

Q. The reabsorption of the sodium from glomerular filtrate is regulated by the hormone _____________.

1. Glucagon
2. Secretin
3. Aldosterone
4. Adrenaline