Respuesta :
Answer:
It is advantageous to have lesser number of bones in the pectoral girdle.
Explanation:
Pectoral girdle is made up by the bones that connect the upper limbs to the appendicular skeleton which includes all the limb bones. Pectoral girdle in humans is made up of two bones. They are clavicle (collar bone) and scapula. The pectoral girdle allows the free movement of upper limbs.
The bones of pectoral girdle are not as massive as the bones of pelvic girdle since it doesn’t have the function of support. Lesser number of bones in pectoral girdle makes movement of upper limbs more free.
Bones are the part of the skeleton system that is made up of minerals, proteins and vitamins. A lesser number of bones in the pectoral girdle will be advantageous.
What is the pectoral girdle?
The pectoral girdle is the shoulder bone that connects the axis of the body to the upper limb of the body bones. It supports the upper limb of the body.
It is made up of two bones namely, the scapula and clavicle as it allows the free movement of the upper limb of the skeleton bones and should be flexible.
It should have fewer bones as it does not have to carry much weight compared to the pelvic girdle of the skeleton system. Also, it makes the movement of the limbs freer.
Therefore, the pectoral girdle should have fewer bones.
Learn more about the pectoral girdle here:
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