BIO SCI E109 Module 4 CH 7 AND 8 Questions and Answers
Question 1.
Using the above Hemoglobin-Oxygen Saturation curves explain why it is important to have
a non-linear oxygen-dissociation curve. Less O2 is released in areas of the body where O2
concentrations are the lowest. More O2 is released in areas of the body where Oz
concentrations are the lowest. More O2 is released in areas of the body where O2
concentrations are the highest.
Correct Answer: More O2 is released in areas of the body where Oz
concentrations are the lowest. Using the graph we notice that in areas where
the partial pressure of oxygen (Po2) is LOW (like in areas of tissue doing large
amounts of aerobic activity and consuming oxygen), the saturation of oxygen in
hemoglobin (Hb) is also LOW meaning most of the oxygen bound to hemoglobin
dissociates in areas where there is not a lot of oxygen present. This allows
tissues, like muscles, to receive more oxygen when they begin using up more
and more of the surrounding oxygen while running for example.
Question 2.
Which of the following are TRUE regarding the membrane of the descending limb of the
Loop of Henle? Allows diffusion of urea that contributes to the osmotic concentration
gradient of interstitial fluid. Includes aquaporins that allow water to leave and concentrate
filtrate NaCl pumps allow filtrate to be 300 mOm less than surrounding interstitial fluid
Utilizes both facilitated diffusion and active transport to remove solutes from filtrate
Correct Answer: Allows diffusion of urea that contributes to the osmotic
concentration gradient of interstitial fluid. Includes aquaporins that allow water
to leave and concentrate filtrate
Question 3.
Match the anatomical structure to the correct description of its function in processing
filtrate within the kidneys.
Correct Answer: Bowman's Capsule Where filtrate is originally removed from the
bloodstream Descending limb of Loop of Henle The first instance in the kidney
were aquaporins allow water to leave the filtrate Ascending limb of Loop of
Henle Where salts are pumped out of the filtrate to establish a concentration
gradient in the interstitial fluid Collecting Duct Where the filtrate is
concentrated before. entering the ureter
Question 4.
In which of the following area(s) of the kidney are nephrons located? Cortex Medulla
Oblongata Ureter
Correct Answer: Cortex
Question 5.
Based on the above plot which roman numerals correspond to times when the individual is
exercising deep breathing?
Correct Answer: iii????
Question 6.
Which of the following factor(s) help blood be filtered in the glomerulus inside the kidneys?
Fluid in the Bowman's capsule has a higher hydrostatic pressure than in the blood. Higher
net colloid pressure than net hydrostatic pressure. Higher net hydrostatic pressure than
net colloid pressure.
Question 1.
Using the above Hemoglobin-Oxygen Saturation curves explain why it is important to have
a non-linear oxygen-dissociation curve. Less O2 is released in areas of the body where O2
concentrations are the lowest. More O2 is released in areas of the body where Oz
concentrations are the lowest. More O2 is released in areas of the body where O2
concentrations are the highest.
Correct Answer: More O2 is released in areas of the body where Oz
concentrations are the lowest. Using the graph we notice that in areas where
the partial pressure of oxygen (Po2) is LOW (like in areas of tissue doing large
amounts of aerobic activity and consuming oxygen), the saturation of oxygen in
hemoglobin (Hb) is also LOW meaning most of the oxygen bound to hemoglobin
dissociates in areas where there is not a lot of oxygen present. This allows
tissues, like muscles, to receive more oxygen when they begin using up more
and more of the surrounding oxygen while running for example.
Question 2.
Which of the following are TRUE regarding the membrane of the descending limb of the
Loop of Henle? Allows diffusion of urea that contributes to the osmotic concentration
gradient of interstitial fluid. Includes aquaporins that allow water to leave and concentrate
filtrate NaCl pumps allow filtrate to be 300 mOm less than surrounding interstitial fluid
Utilizes both facilitated diffusion and active transport to remove solutes from filtrate
Correct Answer: Allows diffusion of urea that contributes to the osmotic
concentration gradient of interstitial fluid. Includes aquaporins that allow water
to leave and concentrate filtrate
Question 3.
Match the anatomical structure to the correct description of its function in processing
filtrate within the kidneys.
Correct Answer: Bowman's Capsule Where filtrate is originally removed from the
bloodstream Descending limb of Loop of Henle The first instance in the kidney
were aquaporins allow water to leave the filtrate Ascending limb of Loop of
Henle Where salts are pumped out of the filtrate to establish a concentration
gradient in the interstitial fluid Collecting Duct Where the filtrate is
concentrated before. entering the ureter
Question 4.
In which of the following area(s) of the kidney are nephrons located? Cortex Medulla
Oblongata Ureter
Correct Answer: Cortex
Question 5.
Based on the above plot which roman numerals correspond to times when the individual is
exercising deep breathing?
Correct Answer: iii????
Question 6.
Which of the following factor(s) help blood be filtered in the glomerulus inside the kidneys?
Fluid in the Bowman's capsule has a higher hydrostatic pressure than in the blood. Higher
net colloid pressure than net hydrostatic pressure. Higher net hydrostatic pressure than
net colloid pressure.
