Excretory System Answers.6. Add the following labels to the diagram of a kidney below. If you like you can also colour in the diagram as indicated. :capsule- turquoise; renal artery – red; renal vein – blue; cortex - brown; medulla - pink; pelvis - yellow; ureter – green; pyramids - purple 7. Excretory System Answers - WikiEducator Was this helpful? Excretory System Questions and Answers - Q for Questions Excretory System MCQ (Multiple Choice Questions and Answers) Q1. The number of uriniferous tubules in each kidney of man is About 10,000 About 5,000 Numerous About 1.0*106 Answer: 4 Q2. The waste matters (urea) are transported by Blood Lymph RBC None of the above Answer: 1 Q3. Conversion of excess of amino acids into urea is done in Lungs Large intestine Liver Cloaca Answer: 3 Q4. Excretory System Answers - WikiEducator Excretory System Answers. From WikiEducator. Jump to: navigation, search. 1 of these are not examples of homeostasis: (circle those that are not) a. Sweating, erection of hairs and capillary dilation/contraction to control the body temperature b. Adjusting the rate of breathing to remove carbon dioxide from the bloodHypothalamus: The part of the brain concerned with controlling water balance.Thirst: This is the main mechanism for diluting the blood.Kidneys: These organs are important for controlling water balance.