excretory system Flashcards
excretion
removal of wastes from the body
skin
external covering of an animal body
lungs
the organ for breathing air. Gas exchange occurs in the lungs.
liver
largest gland in the body. The liver secretes bile for digestion of fats, builds proteins from amino acids, breaks down many substances harmful to the body and has many other essential functions.
kidneys
body organs that filter the blood, removing urea and other wastes
nephrons
the filtration and excretory units of the kidney
ureters
ureters tubes from each kidney that carry urine to the bladder
bladder
sac that stores urine
urine
yellowish liquid, produced in the kidneys. It is mostly water and contains waste products from the blood such as urea, ammonia and uric acid.
urination
passing of urine from the bladder to the outside of the body
urethra
tube through which urine is emptied from the bladder to the outside of the body
Bowman’s capsule
a cup-like structure at one end of a nephron within the kidney, surrounding the glomerulus. It serves as a filter to remove wastes and excess water.
glomerulus
a cluster of capillaries in the kidney that acts as a filter to remove wastes and excess water
haemodialysis
the process of passing blood through a machine to remove wastes
