AIIMS Zoology Chemical Coordination And Integration Class 11 Questions

Match the following columns and select the correct option.

Which of the following integrates Nervous and endocrine system

In the homeostatic control of blood sugar level, which organs function as modulator and effector respectively?

The²⁴⁻hour (diurnal) rhythm of our body such as the sleep-wake cycle is regulated by the hormone

A gland called ‘Clock of ageing’ that gradually reduces and degenerates in ageing is

Catecholamine in a normal person induces

Assertion : Less iodine intake causes goitre. Reason : Less iodine in body decreases thyroxine secretion.

Assertion: Oxytocin is also known as Anti-diuretic hormone (ADH). Reason: Oxytocin can cause an increase in the renal reabsorption of water.

What is the effect of GnRH produced by hypothalamus?

Assertion : Adrenaline is called an emergency hormone. Reason : It acts on the cells of skeletal, cardiac, smooth muscles, blood vessels and fat cells.

Assertion: Insulin is antagonistic to glucagon. Reason: It is an anabolic hormone.

Assertion: Mammary glands are apocrine glands. Reason: The distal part containing secretory granules break down and leaves as a secretion.

Assertion: Hormone calcitonin has antagonistic effect to that of parathormone. Reason: Calcitonin decreases blood calcium level while parathormone increases blood calcium level.

Which of the following match is correct?<br><br><table><tr><th></th><th>Hormone</th><th>Effect</th></tr><tr><td>(a)</td><td>Oxytocin</td><td>Milk ejection hormone</td></tr><tr><td>(b)</td><td>Glucagon</td><td>Decreases blood sugar level</td></tr><tr><td>(c)</td><td>Adrenaline</td><td>Decreases heart rate</td></tr><tr><td>(d)</td><td>Thyroxine</td><td>Decreases BMR</td></tr></table>

Which of the following statements regarding glucagon is false?

Assertion (A) : Aldosterone is a steroid hormone and is important in the control of sodium and potassium ion concentration in mammals. Reason (R) : It upgrades sodium ion concentration in the ECF by promoting reabsorption of sodium ions from renal tubules and excretion of potassium ions in urine.

Assertion: Our body secretes adrenaline in intense cold. Reason: Adrenaline raises metabolic rate.

Which one of the following four secretions is correctly matched with its source, target and nature of action?

Which one of the following four glands is correctly matched with the accompanying description?

Assertion : Diabetes insipidus is marked by excessive urination and too much thirst of water. Reason: Adh is Secreted from posterior pituitary

A person passes much urine and drinks much water but his blood glucose level is normal. This condition may be the result of:

The source of somatostatin is same as that of:

Assertion : The regulation of RBC production is accompanied by the kidneys. Reason : Erythropoietin hormone circulates to the red bone marrow, where it increases stem cell mitosis and speeds up the development of RBCs.

Sella Turcica is found:-

A man suddenly sees a tiger. His heart beat goes up, blood pressure increases, etc. Which hormone is released at this time in his body.

You met a person who has bulging/protruding eyes, tachycardia and higher body temperature. He suffered from