rectal sinus


Sinus may refer to:

In anatomy, where a sinus is a sac or cavity in any organ or tissue:

In the heart:


See also

  • Hemocoel, a space filled with hemolymph in organisms with open circulatory systems
  • Sine a trigonometric math function (Latin sinus)
  • Sines, Portugal, a municipality in Alentejo (Latin Sinus)
  • Sinusitis, a common ailment resulting in the inflammation of the paranasal sinuses

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