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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.

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Q: Why do horses have a fused radius and ulna?
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The two bones of the lower arm are?

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.


What are the bones of forearm?

the radius and ulna


Is the ulna contra-lateral to the radius?

The right ulna is medial to the right radius. The right ulna is contralateral to the left radius.


Similarities between the ulna and the radius?

what is the similarities between the ulna and the radius


What is the difference between the Ulna or 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.


Where is the horses elbow?

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.


What three bones make up your arms?

The Humerus (upper arm), Radius (lower arm) and Ulna (Lower arm and elbow)


What is two bones in the forearm?

ulna and radius


What is the name of the bone of the forearm?

There are actually two bones in your forearm, the ulna and the radius.


What are the two bones that make your forearm?

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


Where is the ulna relative to the 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.


What is the radius and ulna also known as?

The ulna and radius are the bones that make up the Forearm.