If you count the arm as strictly the arm (upper arm), it is only one, the humerus.
If you are counting loosely and counting the lower arm too, it would be 3, the humerus, the radius, and the ulna.
The axial skeleton.
The Upper Arm is made of one bone, the Humerus. There are therefore 2 Humerus bones in any mammalian skeleton.
Appendicular
There are 206 bones in the human skeleton. The bones are divided into two parts. 80 bones in the axial skeleton which are the bones in the center of the body. Like the ribs, the skull and the spine. And 126 bones in the appendicular skeleton. Which is made up of the limbs. Like arm, finger, leg, and foot bones.
Your elbow and your wrist.
No, it does not. The axial skeleton contains the bones arranged in a longitundinal axis, i.e. the cranium, hyoid, auditory ossicles, vertebral column and thoracic cage. The arms are part of the appendicular skeleton
There are more than two long bones in the skeleton but if you mean the two longest bones then the femur (longest) and tibia second longest).
There are three bones in the human arm: the humerus, radius, and ulna.
Not all animals have the same skeletal structure. Whales have bones in their "flippers" that resemble the same bones that make up the human "arm". This is called a homologous structure.
the arm has three bones.
Go to an anatomy text book and look up a diagram of the human skeleton, then look at the arm bones and copy this section of the diagram.
Animals have joints which allow them to bend around, this is also helped by the fact they have muscles.