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Answer:

Anatomists describe the adductor Magnus as a muscle composed of two parts because they consider origin, insertion, and function.

Explanation:

This happens because anatomists classify muscles by their origin and insertion, which influence muscle function.

The origin is usually the proximal end of a muscle that remains fixed during contraction. However, the insertion is the distal end of the muscle that moves during contraction.

In this case, the adductor part originates in an inferior branch of pubis and inserts in linea aspera of femur, having a function to perform the adduction.

On the other hand, the hamstring part originates from sciatic tuberosity and is inserted in the medial supracondylar / adductor tubercle, having the flexion function.

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The adductor magnus is considered a two-part muscle because it has two origins and two different functions.

We can arrive at this answer because:

  • Anatomists analyze a muscle based on its origin and function.
  • As the adductor magnus has two origins and two functions, it is necessary two distinct analyzes to understand it and that is why anatomists classify it as a two-part muscle.
  • The adductor part of the adductor magnus has the adduction function, as the name shows. This part originates from the inferior branch of the pubis.
  • The hamstring part has a flexion function and originates from the sciatic tuberosity.

The places of insertion of these parts are also different, being the hamstring part inserted in the supracondylar tubercle and the adductor part in the femur.

More information:

https://brainly.com/question/6961157?referrer=searchResults

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