ulnabone that together with the
radius forms the forearm
Source: Noland, George B. 1983. General
Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Full article >>>Ulna Elbow.
ultimate causation (factors) Those aspects of behavior that are concerned with why the behavior evolved and its functional significance in an ecological context.
Full article >>>ulnaThe
posterior of two bones of the forearm of
tetrapods. The
ulna articulates
proximally with the
humerus and
distally with the carpals.
Covered in Lab 13
Animal Diversity III ...
Full article >>>Hinge joints, such as the elbow (between the
humerus and the
ulna). These joints act like a door hinge, allowing flexion and extension in just one plane.
Pivot joints, such as the elbow (between the
radius and the
ulna).
Full article >>>Primates have
modifications to their
ulna and
radius (bones of the lower arm) allowing them to turn their hand without needing to turn their elbow. Many primates can also swivel or turn their arms at the shoulder.
Full article >>>When mice were bred with
homozygous mutations for both HoxA11 and HoxD11, they were born with neither
radius nor
ulna in the forelimbs.
Full article >>>'"/>