summary notes CMY3709
Nephron: functional unit or urine-making unit
Each kidney has how many nephrons? 1 million nephrons
accessory organs to kidney bladder, ureters, urethra
Can nephrons be replaced? No, if damaged they cannot be replaced
2 parts of nephron a tubular part (renal tubule) and a vascular part (blood vessels)
Bowman's capsule a C-shaped structure that partially surrounds the glomerulus (Cluster of
capillaries that filter blood)
Loop of Henle has a descending and ascending limb, functions under a countercurrent
mechanism
Is the descending limb permeable to water? Yes, but not Na+ or Cl-
Is the ascending limb permeable to water? No, it is impermable. NaCl diffused out
Kidney receives blood from the: renal artery
Renal artery branches off of the: aorta
two parts of nephron -tubular component (renal tubule)
-vascular component (blood vessels)
Where is the glomerulus located? Bowman's capsule
ascending limb becomes the ______: distal convoluted tubule
3 processes are involved in the formation of urine 1. Glomerular filtration
2. Tubular reabsorption
3. Tubular secretion
Blood pressure in the ______ is higher than the pressure in Bowman's capsule glomerulus
**Glomerular filtration is directly related to __________ systemic blood pressure
Large molecules: red blood cells and large proteins cannot fit though the pores and therefore
remain within the glomerulus
glomerular filtrate is ______ protein-free - except in pregnancy and intense exercise
Nephron: functional unit or urine-making unit
Each kidney has how many nephrons? 1 million nephrons
accessory organs to kidney bladder, ureters, urethra
Can nephrons be replaced? No, if damaged they cannot be replaced
2 parts of nephron a tubular part (renal tubule) and a vascular part (blood vessels)
Bowman's capsule a C-shaped structure that partially surrounds the glomerulus (Cluster of
capillaries that filter blood)
Loop of Henle has a descending and ascending limb, functions under a countercurrent
mechanism
Is the descending limb permeable to water? Yes, but not Na+ or Cl-
Is the ascending limb permeable to water? No, it is impermable. NaCl diffused out
Kidney receives blood from the: renal artery
Renal artery branches off of the: aorta
two parts of nephron -tubular component (renal tubule)
-vascular component (blood vessels)
Where is the glomerulus located? Bowman's capsule
ascending limb becomes the ______: distal convoluted tubule
3 processes are involved in the formation of urine 1. Glomerular filtration
2. Tubular reabsorption
3. Tubular secretion
Blood pressure in the ______ is higher than the pressure in Bowman's capsule glomerulus
**Glomerular filtration is directly related to __________ systemic blood pressure
Large molecules: red blood cells and large proteins cannot fit though the pores and therefore
remain within the glomerulus
glomerular filtrate is ______ protein-free - except in pregnancy and intense exercise
