Active Transport: The ATP- dependent absorption or excretion of solutes across a cell membrane.
Adrenal Glands: Small endocrine gland secreting hormones, located suprerior to each kidney.
Aorta: Large, elastic artery that carries blood away from the left ventricle and into the systemic circiut.
Bladder: A muscular sac that distends as fluid is stored, and whose contraction ejects the fluid at the appropriate time.
Bowman's capsule: The initial segment of the renal tubule.
Excretion: Elimation from the body.
Filtration: Movement of a fluid across a membrane whose pores restrict the passage of solutes on the basis of size.
Kidney: A component of the urinary system; an organ functioning in the regulation of plasma composition including the excretion of wastes, and the maintenance of normal fluid and electrolyte balance.
Glomerulus: A ball in the kidneys, a knot of capillares that projects into the enlarged, proximal end a nephron; the site of filtration the first step in the production of urine.
Nephron: Basic functional unit of the kidney.
Reabsorption: The removal of water and solutes from wastes.
Renal artery: Gives blood to the kidney.
Renal vein: Takes the blood away from the kidneys.