The following points highlight the four types of human excretory system. The types are: 1. Kidney 2. Ureters 3. Urinary bladder 4. Urethra. Human Excretory System: Type # 1. Kidney: There is a pair of kidneys which are dark-red, bean shaped, each with a notch, (concavity), the hilus (= hilum) on its inner side. Blood vessels, lymph vessels, nerves and [...]
Artificial kidney is a haemodialysis machine through which the toxic substances are removed from the blood of a person whose kidneys are completely damaged. Haemodialysis (Gr. haima = blood, dia = through, lyo = separate) is the process of diffusion across a semipermeable membrane to remove unwanted substances from the blood while adding desirable components. The pores in the membrane [...]
The following points highlight the eight major disorders of excretory systems in humans. Excretory System: Disorder # 1. Uremia: In this condition there are high concentrations of non-protein nitrogen's which include urea, uric acid, creatinine and a few less important compounds. Urea accumulation in blood is comparatively high in uremia. In such patients urea can be removed by a process [...]