Which animal is a strong hyperregulator? A B C D E Which animal would use the mo
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Which animal is a strong hyperregulator? A B C D E Which animal would use the most energy to osmoregulate in a low osmolarity environment? A B D E F Cardiac output is 6 liters/min 8 liters/min 12 liters/min 15 liters/min 9 liters/min Which of the following has the greatest effected on the flow of liquid through a tube? Pressure difference Viscosity of the liquid Length of the tube Radius of the tube Temperature In which of the following vessels is there a lack of pressure pulse? Large arteries, terminal arteries, and arterioles Terminal arteries. arterioles. capillaries. and venules Capillaries, venules, and veins Venules and veins Veins only Which is the true statement? all veins convey deoxygenated blood away from the heart all veins convey deoxygenated blood back to the heart all veins convey blood back to heart, and most of that blood is deoxygenated all veins convey oxygenated blood back to the heartExplanation / Answer
18) The animals that maintain their bodyfluids hyperosmotically to the external medium are called hyperregulators.
They reduce permeability , promote Nacl absorption and urine production.
In the graph, the center line represents the line of isoosmolality. The region above the center line hyperosmoregulator and the one which is below is hypoosmoregulator. The Animal A is the strong hyperregulator.
Hence, the correct option is (A).
19) The animals must expend energy to maintain the osmotic gradients via active transport. The animal E would use most energy to osmoregulate in a low osmolarity environment.
Hence, the correct option is (D).
20) Cardiac output is calculated as CO= HR* SV
heartrate(HR), SV(stroke volume)
SV= EDV-ESV
EDV-end diastolic volume, ESV-End systolic volume
SV= 120-30=90
HR= 100 bpm
CO= 100*90= 9000ml/min or 9liters/min
Hence, the correct option is (E).
21)Of all the factors such as the pressure difference, viscosity of fluid , temperature, radius of the tube and length of the tube, the one which has the greatest affect on the flow of liquid through a tube is the diameter / radius. An increase in the radius of the tube results in increased flow of fluid through the tube, in a second assuming that the pressure is constant.
Hence , the correct option is (D).
22) Veins and venules are the blood vessels in which there is a lack of pressure pulse. The blood from the veins
and venules is removed far through the pumping action of the heart. Therefore, the veins and venules are non pulsatile.
Hence, the correct option is (D).
23) All veins convey blood back to the heart from the tissues, and most of that blood is deoxygenated. However, pulmonary and umbilical veins carry oxygenated blood to the heart.
Hence, the correct option is (C).
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