Test # 3 April 6, 2018 1. The sormal average pll of urine is C. D. 7 E 8 2 Stron

Question

Test # 3 April 6, 2018 1. The sormal average pll of urine is C. D. 7 E 8 2 Strong sympathetic stimulation of the kidney can cause B. an increased glomerolar filtration rute C dilation of effercsl arteriole Which of the following is greater? B te 3. he concenuration of the ions in the filbrabe at the beginning of the loop of Henle coacentration of ions in the filurate at the hotiom of the descending limb of the loop of Henle 4The ability so form a concentrated urine depends cn the funsticns of the A. proximal tubule and distal tubule B. distal tubule and Bowman's capse proximal tubule D loop of Henle and collecting dact E Bowman's capsule 5 Urine is carried to the urinary bladder by A blood vessels B lymphatic vessels D. E the calyces Aldosterone is A. the ureters the urethra synthesined by the neurons in the anterior hypothalamus secreted by the adrenal contex C Screted by the anterior pituitary D. secreted by the pancreas secreted by the adrenal medulla The mechanisms for maintaining the high solute concentration (high osmolarity) in the renai medulla require A. B. active transpin of sodium and chloride ions from the ascending limb of te loop of Henle ve transport of sodium and chloride ions from the ascending limb of the vasa recta C. the ascending limb of the loup of Hemle to be permeable to water D. the vasa recta to be impermeable to water active transport of sodium and chloride ions from the descending limb of the vasa recta a. Blood leaving the glomerulus flows into the A renal artery B. efferent arteriole C. afferent arteriole D. cortical radiate (interlobular) artery E. interlobar vein The macula densa cells A. secrete angiotensin II B. secrete aldosterone stimulate renin secretion from juxtaglomerular cells convert angiotensin I to angiotensin II monitor calcium levels in the filtrate

Explanation / Answer

Ans 1: C.

The pH of urine may differ from person to person based on his or her acid-base status and usually ranges form 4.5 to 8. The normal average pH of urine is considered to be 6.

Ans 2: A.

Option A is the correct answer. Option C is wrong because parasympathetic stimulation causes vasoconstriction not dilation. Option B is wrong because vasoconstriction results in lesser glomerular filtration due to decreased glomerular flow.

Ans 3: B.

As one goes down the loop, the membrane turns more and more semipermeable until it reaches the bottom part and starts ascending. Thus as one goes down the loop, more water diffues out and more sodium and chloride ions are retained.

Ans 4: D.

While the role of loop of Henle is explicit in the above explanation, the collection tubule performs the function of increasing the concetration of urea in the urine, thereby influencing the concentration of urine.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.