CBSE Class 10 Science 2019 · Paper 31/4/3 · Question 13

The diagram (see the solution figure) shows the human excretory system as seen from the front: two bean-shaped kidneys high in the abdomen on either side of the backbone, a ureter from each kidney down to the urinary bladder, and the urethra leading out of the bladder; the aorta and the vena cava run down between the kidneys, joined to them by the renal arteries and veins. Labels: (i) Urinary bladder: the muscular bag low in the middle of the abdomen into which both ureters open. (ii) Left kidney: the kidney on the person's left side, which is on the right-hand side of a diagram drawn as seen from the front. (iii) Left ureter: the tube that carries urine from the left kidney down to the urinary bladder.