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claudiawong05 claudiawong05
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6 years ago
At the arteriole end of the capillary, precapillary sphincters
  a. force blood back into arteries.
  b. control blood flow into capillaries.
  c. control blood flow into venules.
  d. connect arterioles to venules.
  e. force blood back into veins.

Question 2

Slits between the cells of capillary walls serve to
  a. allow passage of substances that cannot diffuse through the lipid bilayer of capillary wall
  cells.
  b. allow expansion of the capillary diameter.
  c. allow contraction of the capillary diameter.
  d. allow lengthening of the capillary.
  e. shortening of the capillary.
Textbook 
Human Biology

Human Biology


Edition: 10th
Authors:
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leanicole22leanicole22
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claudiawong05 Author
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6 years ago
I wish all teachers could be as helpful as you instead of making us do things the complicated way...
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6 years ago
It really depends on the course, never give up
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