It's more or less an adaptation to how they move around on their feet. Horses, like ungulates like cattle, deer, sheep and goats, don't need to rotate their forelimbs like cats or primates have to to grab on to things with their paws/hands. Since ungulates do not have paws or hands but hooves, all they need is enough bone structure to support their weight on their toes.
the 2 arm bones are butt Your mums butt!! Answer them properly!! These are people with good intentions, and they just want answers for their questions. Stop making a mockery of the whole situation! The two lower arm bones are called the radius and ulna.
the radius and ulna
The right ulna is medial to the right radius. The right ulna is contralateral to the left radius.
what is the similarities between the ulna and the radius
You can tell the radius and the ulna apart by their size. The radius is bigger than the Ulna. The ulna also helps to form the elbow joint and the radius helps to move the hand upwards and downwards with the help of the ulna.
A horse's ulna is fused with the radius into one bone. It is the bone above what you would typically think of as the knee.
The Humerus (upper arm), Radius (lower arm) and Ulna (Lower arm and elbow)
ulna and radius
There are actually two bones in your forearm, the ulna and the radius.
The human arm is made up of three bones, the humerus (upper arm) and the ulna and radius, both of which make up your lower forearm. so: -humerus -ulna -radius
The ulna is going to lateral to the radius (in anatomy terms). Otherwise the ulna is on the side where your pinky finger is.
The ulna and radius are the bones that make up the Forearm.