ANATOMY PUZZLE

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Across
  1. 3. SEPTAL SCARAMBLED WITH I JOINS WITH HORSE
  2. 4. IAM A SMALL PIECE STUCK IN A SPACE
  3. 5. AM HALF FEMALE AND HALF FOODWAY YET PRESENT IN LOWERLIMB
  4. 7. man confirmed alive using me
  5. 8. me and my arterial partner travel together but never touch each other
Down
  1. 1. WILL TURN THE HIP OUT
  2. 2. am the longest,sounds safe but a scavenger
  3. 6. AM THE KEY