List 1. the 8 substances given in the video; substances that are reabsorbed, from
the filtrate into blood vessels, as they flow through the proximal convoluted
tubule.
- Glucose
- Vitamins
- Amino Acids
- Sodium
- Water
- Chloride
- Potassium
- Bicarbonate
2. What are the names of the two sets of blood vessels receiving these
reabsorbed substances?
- The names of the two sets of blood vessels receiving these reabsorbed
substances are Pertibular Capillaries.
3. The loop of Henle descending limb passes into what part of the kidney?
- The loop of Henle descending limb passes into the kidney medulla.
4. In the loop of Henle there are significant changes in _____________
concentration.
- Osmotic
5. A counter current system allows only ____________to leave the filtrate by
osmosis during loop descent.
- Water only
6. The counter current system allows only _________to leave the filtrate by
active transport during loop ascent
- Salt only
7. The Loop of Henle ascending limb returns to what part of the kidney?
- The Loop of Henle ascending limb returns to the Kidney Cortex.
8. The counter current system creates an osmotic ________________ in medulla
interstitial fluid. This is necessary to _____________urine.
- produce The counter current system creates an osmotic gradient in medulla interstitial
fluid. This is necessary to produce concentrated urine.
9. The capillary system ________________ parallels the loop of Henle and
participates in gradient formation and maintenance.
- The capillary system Vasa Recta parallels the loop of Henle and participates in
gradient formation and maintenance.
SECRETION
Distal convoluted tubule. Secretion is the movement of substances from the
blood to the nephron filtrate.
10. List the 4 waste substances given in the video that are secreted into the distal
convoluted tubule.
- Ammonia
- Uric Acid
- Hydrogen Ions
- Penicillin
Collecting Duct
11. If concentrated urine must be produced to maintain body fluid level, what
hormone acts on the collecting duct cells promoting water movement from filtrate
to interstitial space?
- Antidiuretic Hormone acts on the collecting duct cells promoting water
movement from filtrate to interstitial space.
12. Give the name of the part of the nephron shown by each number: 1, 2, 3, 4, 5
1.
2.
3.
4.
5.
Afferent Arteriole
Efferent Arteriole
Proximal Convoluted Tubule
Distal Convoluted Tubule
Loop of Henle