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by BlastRoom
How the kidneys filter blood, what leaves in urine and how water balance is held steady.
#biology
20 questions
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The diagram numbers four parts of the urinary system. Which numbered part stores urine until it is released from the body?
Blood must reach a kidney before it can be filtered. Which vessel delivers that blood to the kidney?
In the diagram, which numbered part is the organ that filters wastes out of the blood and forms urine?
Blood leaving a healthy kidney in the renal vein differs from the blood that entered it. How does it differ?
Look at the protein row in the table. What does it show about filtration in the nephron?
Blood pressure pushes water, salts, glucose and urea out of a knot of capillaries and into the cup-shaped end of a nephron. What is this first stage of urine formation called?
In which order do the three stages of urine formation happen in a nephron?
Look at the urea row in the table. Which explains the change in its concentration from filtrate to urine?
Urine has just been formed in the organ numbered 1 in the diagram. Which numbered part does it travel through next?
Certain drugs and extra hydrogen ions are moved out of the capillary blood and into the fluid already inside the tubule. What is this stage called?
A student drinks a liter of water in a few minutes. The blood becomes more dilute and the pituitary releases less antidiuretic hormone. What urine will the kidneys produce over the next hour?
Look at the table showing what two students drank and how much urine each produced in one day. Which statement best accounts for the difference?
An athlete sweats heavily through a two-hour game in hot weather and drinks nothing. How will the urine she produces afterward compare with her usual urine?
Antidiuretic hormone acts on the kidney tubules by making their walls more permeable to water.
Ammonia produced when amino acids are broken down is converted into urea. In which organ does that conversion happen?
Which substance is the nitrogen-containing waste left over when the body breaks down amino acids?
Carbon dioxide is a waste produced by cellular respiration in every body cell. Which organ removes it from the body?
A urinalysis on a patient who feels constantly thirsty shows glucose in the urine. What does this result most likely indicate?
A kidney stone lodges in the part numbered 2 in the diagram and blocks it completely. What is the immediate result?
Both of a patient's kidneys have failed, and a machine now passes his blood along one side of a thin membrane bathed in a special fluid. What must that machine do to keep him alive?
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How Body Systems Work Together
20 questions
