Which structural feature of lymphatic vessels is responsible to forward movement of lymph?
A. Overlapping endothelial cells
B. Valves
C. Thin walls
D. No basement membrane
Answer: B
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Trisomy-21 results in __________ syndrome.
Fill in the blank(s) with the appropriate word(s).
Assume that the import of a particular amino acid across the plasma membrane is observed (1 ) to occur only down its concentration gradient and (2 ) to slow when a different but similar amino acid is added to the extracellular fluid. The movement of the amino acid through the membrane is most likely by
A) osmosis. B) diffusion. C) facilitated diffusion. D) active transport. E) pinocytosis.
The first gluteal muscle to appear on a series of axial CT images arranged in descending order is the ____________________.
Fill in the blank(s) with the appropriate word(s).
If water intake (ingestion) is decreased, the kidney can decrease the amount of water excreted in urine by increasing the amount of water reabsorbed at the renal corpuscle.
Answer the following statement true (T) or false (F)