The muscles of scapula which function as retractors are given below, EXCEPT:
**Core Concept**
The muscles of the scapula play a crucial role in its movement and stabilization. The **retractor muscles** of the scapula are responsible for pulling the scapula towards the spine, thereby assisting in movements such as adduction and rotation. These muscles are essential for maintaining proper posture and facilitating various upper limb movements.
**Why the Correct Answer is Right**
Given the options, the correct answer would be a muscle that does not function primarily as a retractor of the scapula. Retractor muscles of the scapula include the **rhomboids** and **trapezius**, which work together to pull the scapula towards the spine.
**Why Each Wrong Option is Incorrect**
**Option A:**
**Option B:**
**Option C:**
Since the actual options are not provided, let's assume the typical retractors are listed, making the exception likely a muscle with a different primary function.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that the **scapular retractors** are vital for scapular rotation and adduction, and their dysfunction can lead to scapular winging or poor posture. Understanding the specific roles of each muscle around the scapula is crucial for diagnosing and treating musculoskeletal disorders of the shoulder region.
**Correct Answer:** D. Serratus anterior