CHEMICAL COORDINATION AND INTEGRATION

 Q76.Fight-or-flight reactions cause activation of 

(1) The parathyroid glands, leading increased metabolic rate 

(2) The kidney, leading to suppression of renin- angiotensin-aldosterone pathway (3)The adrenal medulla, leading to increased secretion of epinephrine and norepinephrine 

(4) The pancreas leading to a reduction in the blood sugar levels 

Ans.3

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Q77.Identify the hormone with its correct matching of source and function: 

(1) Oxytocin - posterior pituitary, growth and maintenance of mammary glands

(2) Melatonin-pineal gland, regulates the normal rhythm of sleepwake cycle 

(3) Progesterone-corpus-luteum, stimulation of growth and activities of female secondary sex organs 

(4) Atrial natriuretic factor - ventricular wall increases the blood pressure

Ans.2

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Q78.Which of the following statement is correct in relation to the endocrine system? 

(1) Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones 

(2) Non-nutrient chemicals produced by the body in trace amount that act as intercellular messenger are known as hormones 

(3) Releasing and inhibitory hormones are produced by the pituitary gland 

(4) Adenohypophysis is under direct neural regulation of the hypothalamus 

Ans.2

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Q79.A pregnant female delivers a baby who suffers from stunted growth, mental retardation, low intelligence quotient and abnormal skin. This is the result of 

(1) Low secretion of growth hormone 

(2) Cancer of the thyroid gland 

(3) Over secretion of pars distalis  

(4) Deficiency of iodine in diet 

Ans.4

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Q80.Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)  

(1) Somatostatin, oxytocin 

(2) Cortisol, testosterone 

(3) Insulin, glucagon 

(4) Thyroxin, Insulin

Ans.2

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Q81.Which one of the following pairs of chemical substances, is correctly categorised? 

(1) Secretin and  - Polypeptide 

  rhodopsin            hormone   

(2) Calcitonin and - Thyroid

thymosin.                 hormones 

(3) Pepsin and prolactin - Two 

 secreted                           digestive 

in stomach                       enzymes 

(4) Troponin and - Complex protein 

myosin                    in

striated muscle 

Ans.4

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Q82.The 24 hour (diurnal) rhythm of our body such as the sleep-wake cycle is regulated by the hormone.

(1) Adrenaline 

(2) Melatonin 

(3) Calcitonin 

(4) Prolactin 

Ans.2

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Q83.Injury to adrenal cortex is not likely to affect the secretion of which one of the following? 

(1) Cortisol 

(2) Aldosterone 

(3) Both androstenedione and dehydroepiandrosterone 

(4) Adrenaline 

Ans.4

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Q84.Which one of the following pairs is incorrectly matched?  

(1) Insulin-Diabetes mellitus 

                            (disease) 

(2) Glucagon - Beta cells (source) 

(3) Somatostatin - Delta cells 

                                  (source) 

(4) Corpus luteum - Relaxin 

                                   (secretion)

Ans.2

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Q85.Toxic agents present in food which interfere with thyroxine synthesis lead to the development of 

(1) Thyrotoxicosis 

(2) Toxic goitre 

(3) Cretinism 

(4) Simple goitre

Ans.4

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Q86.The letter T in T-lymphocyte refers to

(1) Thalamus 

(2) Tonsil 

(3) Thymus 

(4) Thyroid 

Ans.3

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Q87.A health disorder that results from the deficiency of thyroxine in adults and characterised by (i) a low metabolic rate, (ii) increase in body weight and (ii) tendency to retain water in tissues is: 

(1) Simple goitre 

(2) Myxoedema 

(3) Cretinism 

(4) Hypothyroidism 

Ans.2

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Q88.Which one of the following is an amine hormone? 

(1) Progesterone 

(2) Thyroxine 

(3) Oxypurin 

(4) Insulin 

Ans.2

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Q89.The blood calcium level is lowered by the deficiency of 

(1) Calcitonin 

(2) Parathormone 

(3) Thyroxine 

(4) Both Calcitonin and Parathormone

Ans.2

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Q90.Which of the following pairs of organs includes only the endocrine glands? 

(1) Adrenal and Ovary 

(2) Parathyroid and Adrenal 

(3) Pancreas and Parathyroid 

(4) Thymus and Testes 

Ans.2

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Q91.Compared to a bull a bullock is docile because of 

(1) Lower levels of adrenalin/noradrenalin in its blood

(2) Higher levels of thyroxin 

(3) Higher levels of cortisone 

(4) Lower levels of blood testosterone 

Ans.4