bowman's capsule and ultrafiltration

• What is Bowman's capsule?


  C-shaped structure partially surrounding the glomerulus
• where in a nephron does unltrafiltration take place

  in the glomerulus and bowmans capsule
• what is meant by ultrafiltration


  this is filtration under pressure that separates small soluble molecules from the blood plasma
• give 4 examples of small soluble molecules that can be filtered out during ultrafiltration


  water, glucose, urea and salts
• how is high hydrostatic pressure generated in the afferent arteriole


  due to the afferent arteriole being wider then the efferent arteriole and it pumping blood to the heart
• why is there high hydrostatic pressure in the glomerulus


  this is because the afferent arteriole diameter is wider than the efferent arteriole
• what pressure is generated in the glomerulus to help with ultra filtration


  high hydrostatic pressure
• what separates the the blood entering the glomerulus from the space inside the bowmans capsule


  twio cell layers and a basement membrane
• what is meant by the glomerular filtration rate


  this is the rate at which fluid passes from the blood in the glomerular capillaries into the bowman's capsule
• What effects the glomerular filtration rate


  the difference in water potential
• what are the epithelial cells found on the bowmans capsule called

  podocytes
• on the podocytes what helps with the filtration


  there feet with pores
• what is meant by a molecular sieve


  this will be a certain type of membrane that allows only selective sizes to pass though
• what three layers must the blood pass through in order to be filtered

  the capillary network m, basement membrane and bowman's capsule
• list 4 examples of molecules that wont b e able to pass through in ultra filtration

  red blood cells m plasma proteins m, white blood cells and platelets