If asked to find the cause of regular fluctuations in a population's size not associated with seasonal environmental variation, you would probably first seek evidence for: 

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#Question id: 20273

#Unit 7. System Physiology – Animal

Primary site of action of thiazide diuretics in the nephron is;

TLS Online TPP Program

#Question id: 20272

#Unit 7. System Physiology – Animal

The factors that stimulate or inhibit the secretion of ADH by the posterior pituitary are:

a. Pain, nausea, hypoglycemia, and various drugs all inhibit the secretion of ADH. 

b. Pain, nausea, hypoglycemia, and various drugs all stimulate the secretion of ADH. 

c. Ethanol, α-adrenergic agonists, and atrial natriuretic peptide inhibit secretion of ADH.

d. Nicotine, opiates, antineoplastic agents stimulate the secretion of ADH. 

Which one of the following combinations of above statements is correct?

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#Question id: 20271

#Unit 7. System Physiology – Animal

Nephrogenic diabetes insipidus is treated with thiazide diuretics. The usefulness of thiazide diuretics in treating nephrogenic diabetes insipidus is explained as follows:

a. Thiazide diuretics inhibit Na+ reabsorption in the early distal tubule. By preventing dilution of the urine at that site, the final, excreted urine is less dilute.

b. Thiazide diuretics decrease glomerular filtration rate; because less water is filtered, less water is excreted.

c. Thiazide diuretics, by increasing Na+ excretion, can cause a secondary ECF volume contraction.

Which one of the following combination of above statements is correct?

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#Question id: 20270

#Unit 7. System Physiology – Animal

Oxytocin is formed primarily in the paraventricular nuclei of the hypothalamus. Which of the following statement is FALSE regarding oxytocin?

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#Question id: 20269

#Unit 7. System Physiology – Animal

The antidiuretic hormone (ADH) originates primarily in the supraoptic nuclei of the hypothalamus, which of the following statement is FALSE regarding ADH?

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#Question id: 22959

#Unit 7. System Physiology – Animal

The hormone that regulates the concentration of calcium & phosphorus in ECF: