30. The functional structure of the respiratory system has all of the following

Question

30. The functional structure of the respiratory system has all of the following suitable for gas exchange, EXCEPT characteristics which make it a. High surface tension b. Large surface area c. Thin walls d. Closeness to capillaries 31The volume of urine formed daily is the kidney each day _compared to the volume of blood processed by , e a. Much higher b. Much lower c. Approximately the same d. Varies with activity 32. A tumor of the adrenal cortex would result in all of the following, EXCEPT a. b. c. d. Hyponatremia A decrease in urine formation An increase in K+ secretion by the tubules Increased osmotic pressure 33. Changes in electrolyte concentrations in our blood are actually detected as changes in a. Urine sodium levels b. Osmotic pressure c. d. blood pressure 34. Which of the following lists the vessels in the correct order of blood flow in the kidney nephron a. Efferent arteriole, glomerulus, afferent arteriole, peritubular capillaries b. Peritubular capillaries, efferent arteriole, glomerulus, afferent arteriole, c. Afferent arteriole, glomerulus, efferent arteriole, peritubular capillaries d. Efferent arteriole, afferent arteriole, glomerulus, peritubular capillaries 35. The endocrine role of the kidney is to produce a. Rennin in response to a drop in blood pressure or blood flow b. Aldosterone in response to hypertension c. ADH in response to increased glomerular filtration d. Angiotensin in response to hypotension 36. As the level of sodium in the blood increases from renal tubular reabsorption a. More potassium is excreted in the urine b. More sodium is excreted in the urine c. The blood pressure will drop d. Glomerular filtration will stop

Explanation / Answer

30. The functional structure of the respiratory system has all of the following characteristics which make it suitable for gas exchange, EXCEPT

              a. High surface tension

31. The volume of urine formed daily is …………………….. compared to the volume of blood processed by the kidney each day

              b. much lower

32. A tumor of the adrenal cortex would result in all of the following, EXCEPT

              a. Hyponatremia

33. Changes in electrolyte concentrations in our blood are actually detected as changes in

              b. Osmotic pressure

34. Which of the following lists the vessels in the correct order of blood flow in kidney nephron

              c. Afferent arteriole, glomerulus, efferent arteriole, peritubular capillaries

35. The endocrine role of the kidney is to produce

              a. Rennin in response to a drop in blood pressure or blood flow

36. As the level of sodium in the blood increases from renal tubular reabsorption

              a. More potassium is excreted in the urine

Explanation:

30. The respiratory system has a very low surface tension due to presence of surfactants.

31. The kidney process almost 180 L of blood per day of which only 1.5 L is ecreted as urine.

32. A tumor of adrenal cortex releases aldosterone and cortisol, both having mineralcorticoid action, that increases sodium Reabsorption and increases potassium excretion.

33. Changes in electrolyte concentration causes change in blood volume and plasma osmolality or tonicity.

36. Increased sodium reabsorption from glomerular filterate occurs at the expense of increased potassium or hydrogen ion secretion.

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