Answer these questions please
Answers
Answer:
7.Most dissolve substances are reabsorbed are Urea, NH3, creatinine, and some drugs are filtered or secreted as wastes. H+ and HCO3– are secreted or reabsorbed as needed to maintain acid–base balance.
8.a) nephron- functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.
b) uretres-The urine travels from the kidneys to the bladder in two thin tubes called ureters. The ureters are about 8 to 10 inches long. Muscles in the ureter walls tighten and relax to force urine down and away from the kidneys. Small amounts of urine flow from the ureters into the bladder about every 10 to 15 seconds.
9 The total amount of urine produced in humans is regulated by the presence of : The total amount of water. The total amount of dissolved nitrogenous wastes present in the urine. Certain hormones that help in controlling the movement of water and sodium ions into and out of the nephrons.
10 1)The urea cycle enzymes convert ammonia to urea in the liver, and the urea is excreted by the kidneys.
2) Urinary bladder is a sac like structure which stores urine temporarily.