You’ll notice that essentially all of the water was filtered out of the blood at the glomerulus. Blood is mostly water, and the entire blood volume goes through the kidneys about once every 4 – 5 minutes.

19. 20. You’ll notice that essentially all of the water was filtered out of the blood at the glomerulus. Blood is mostly water, and the entire blood volume goes through the kidneys about once every 4 – 5 minutes. You’ll also notice that essentially all of the Na+ and nutrients exit at the glomerulus. Provide a suggestion as to why you don’t produce several liters of urine every five minutes, and are not in imminent danger of dying of low blood pressurefdehydration, malnutrition, or cardiac arrest even though all of your blood’s fluid, Na+, and nutrients exit the bloodstream at the glomerulus. Be sure to use the term "reabsorption" in your description . You’ll also notice that none of the large proteins were filtered out of the blood at the glomerulus. Just because something is a large protein, doesn’t mean that it isn’t a waste product, toxin, or something in excess in the blood. It may still be something the body needs to filter out of the blood. Provide an explanation as to how the blood rids itself of large proteins that cannot be filtered out through the glomerulus simply because of their size. Be sure to use the term "tubular secretion" in your description |]. The diagram below is a simplified and magnified representation of a nephron. You’ll be referring to this diagram to help you in answering the next section of questions. 21. 22. 23. 24. Circle on this diagram the structure that we focused on with the last section of questions—the structure where filtration occurs. List the structures that makeup the renal tubule. Draw arrows into the diagram showing how the filtrate will move through the renal tubule after it has been filtered out of the glomerulus. Normally we think of proximal as meaning "nearer to the center of the body or the point of attachment" and distal as meaning "farther from the center of the body or the point of attachment." In regards to the proximal and distal convoluted tubules, what is the point of attachment that those terms refer to?