Which of the following could cause an INCREASE in the concentrations of ions found in the blood? 1. The glomerulus (Bowman's capsule) filters more substances than it's supposed to 2. The nephron reduces the amount of substances allowed to leave 3. More water is reabsorbed in the urinary system than usual 4. The organism dramatically decreases the amount of water consumed

Which of the following could cause an INCREASE in the concentrations of ions found in the blood? 1. The glomerulus (Bowman's capsule) filters more substances than it's supposed to 2. The nephron reduces the amount of substances allowed to leave 3. More water is reabsorbed in the urinary system than usual 4. The organism dramatically decreases the amount of water consumed

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter48: Regulating The Internal Environment

Section: Chapter Questions

Problem 6TYK: Which of the following correctly describes a part of kidney function? a. Collecting ducts dilute...

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Which of the following correctly describes a part of kidney function? a. Collecting ducts dilute urine because they are permeable tosalt but not water. b. In the ascending loop of Henle, Na1 and Cl2 move into thetubules because the osmolarity of the filtrate is increased. c. The descending loop of Henle receives filtrate from theascending loop. d. The distal convoluted tubule pumps water into the tubule byactive transport. e. The renal pelvis receives urine from the collecting ducts andcarries it to the ureters.
1. True or False: Cations and anions both easily cross the filtration membrane in a nephron 2. What type of pressure is present in a renal capsule? a.Hydrostatic Pressure b. Colloid osmotic pressure c. Both a and b are correct 3. Which activity occurs first in a nephron? a. filtration b. reabsorption c. secretion 4. True or False: During blood filtration, water moves into the nephron. 5. What cell type helps to form a filtration membrane? a. hepatocyte b.podocyte c.Distal convoluted tubule
1.Functions of the urinary system include A) regulation of plasma concentration of certain ions. B) regulation of blood volume and blood pressure. C) helping to stabilize blood pH. D) conservation of valuable nutrients. E) All of the answers are correct.
1) Increasing the concentration of ADH (antidiuretic hormone) causes __________. A) more salt to be secreted into the nephron B) less urine to be produced C) blood and body water volume to decrease D) the collecting duct to become less water permeable E) less water to be reabsorbed by the nephron and collecting duct F) all of the above
1 Uric acid is a waste product used by birds and insects because: a. It is very light. b. It is metabolically cheap to produce. c. It does not require a kidney for its production. d. It makes a coloured pigment for the bird or insect. e. It can easily be converted into useful products like feathers. 2 The nephridia of an earthworm differs from the human nephron in that the nephridia: a. Has no reabsorption of salts. b. Has no reabsorption of water. c. Does not filter the blood. d. Selectively pumps ammonia into the nephridia. e. Is excreting ammonia instead of urea. 3 Oxygen dissociation in your blood: a. Is the release of oxygen to the tissues. b. Occurs in the lungs. c. Is the ionisation of oxygen in water (blood plasma). d. Is controlled by the enzyme carbonic anhydrase. e. Allows oxygen to attach to the haemoglobin. 4 Veins require valves, while arteries do not, because: a. The veins keep branching and the valves control which branch is open. b. Veins have blood that is…
4. Which of the following structures of nephron connects the Bowman’s capsule to the loop of Henle? Group of answer choices Collecting duct Connecting tubule Proximal convoluted tubule Distal convoluted tubule
1) The function of the vasa recta is to _______? A) deliver O2 and nutrients to the renal medulla without reducing its osmolarity B) prevent the concentration of Na+ and Cl- ions in the renal medulla from getting too high C) prevent the concentration of urea in the renal medulla from getting too high D) deliver urea to the nephrons so that it can be excreted from the body
Which of the following is false about water reabsorption at the kidneys: a). Water is actively pumped from the tubules into the bloodb). A concentration gradient of sodium must be established to move Water c). The loops of Henie allow for water reabsorption d). Water moves through aquaporins
1) How does your excretory system help you maintain homeostasis when you are dehydrated? 2) Structures within a nephron are labelled in the figure above. In which of these parts of the nephron is water reabsorbed back into the body? (See attached image)
Which of the following ions is important for the symport transport of amino acids, glucose and other solutes through the membrane into nephronest epithelial cells? a) Cl- b) Ca2 + c) Na + d) K +
1)Which structure would a molecule of urea pass through first? A) proximal convoluted tubule B) glomerulus C) descending and thin ascending limbs of the nephron loop D) collecting duct E) ureter
6. Which of the following is not true of kidneys? * They remove wastes from the bloodstream. They help balance the body’s water content. They remove oxygen from the body. They produce concentrated urine.