ulnas
Partners of radii
Ulnas is the plural of ulna, the longer of the two bones in the forearm, running from the elbow to the wrist on the side opposite the thumb.
The ulna forms the point of the elbow.
In anatomy, either ulnas or ulnae serves as the plural: Both ulnas showed signs of fracture.
Arm's lower half
- radiusCenter-to-perimeter distance
- bonesRigid internal support structure
- elbowArm's middle joint
- wristHand-forearm connection
humerus · olecranon · carpals · skeleton · arm · joints · articulation · pronation
Split in hard material
- breakInterrupt continuity
- splintDevice immobilizing injured limbs
- castPerformers, throw, or splint
- X-rayPenetrating diagnostic beam
orthopedic · dislocation · nightstick · trauma · healing · reduction · plate · screw
Having two feet
- quadrupedalWalking on four legs
- wingLimb enabling flight
- flipperMarine animal's swimming limb
- homologousHaving shared evolutionary origin
vertebrate · mammal · primate · bat · whale · forelimb · evolution · adaptation
forearm
Arm's lower half
wrist · humerus · olecranon · carpals · skeleton · arm · joints · articulation · pronation · supination
fracture
Split in hard material
X-ray · orthopedic · dislocation · nightstick · trauma · healing · reduction · plate · screw · fixation
bipedal
Having two feet
- quadrupedalWalking on four legs
- wingLimb enabling flight
- flipperMarine animal's swimming limb
homologous · vertebrate · mammal · primate · bat · whale · forelimb · evolution · adaptation · tetrapod