Human Physiology Unit 4C:
Urinary: Renal Structures
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Paige Stieneke
BIOL 256
Dr. Karri Haen
April 8, 2013
Matching. Select the correct name for each anatomical
structure:
1. ___ Peritubular capillaries
2. ___ Efferent arteriole
3. ___ Afferent arteriole
4. ___ Cortex
5. ___ Medulla
6. ___ Interlobar vein
7. ___ Interlobar artery
8. ___ Arcuate vein
9. ___ Arcuate artery
10. ___ Glomerulus
11. ___ Vasa recta
Kidneys
1. What is the major function of
kidneys?
2. What is the structural and
functional unit of the kidney?
a. Where does filtration
occur in the nephron?
b. What does the
proximal convoluted
tubule reabsorb?
c. What structure is
found between the
proximal and distal
convoluted tubule?
i. Descending Limb: (Thick, thin) segment that reabsorbs (water, ions)
ii. Ascending Limb: (Thick, thin) segment that reabsorbs (water, ions)
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1060 Hixson-Lied Student Success Center  294-6624  www.si.iastate.edu
d. True or False: The distal convoluted tubule functions more in reabsorption rather than
secretion
i. What process aids in the movement of ions?
e. Which two cell types are found in the collecting tubules?
i. How can these two cell types be distinguished?
3. True or False: Filtrate contains all plasma except for protein and other cells!
4. What is found in urine?
5. (Afferent, Efferent) arterioles go toward the glomerulus, and (afferent, efferent) arterioles go away
from the glomerulus
6. List the 3 processes of urine formation:
a. ______________: Cells, proteins, large molecules are filtered out, leaving plasma (except
for proteins)
i. Where do cells, proteins and large molecules go?
ii. Where does plasma (excluding proteins) go?
b. ______________: Ions removed from tubular fluid and put back into bloodstream
c. ______________: From peritubular capillaries into tubule’s lumen (ex: drugs for excretion)
Two Types of Nephrons:
1.
a. Most nephrons that produce (dilute, concentrated) urine
2.
a. Loops of Henle dip deeply into medulla, produce (dilute, concentrated) urine
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624  www.si.iastate.edu