What is the large paired superficial muscle of the lower back?

The large paired superficial muscle of the lower back is the trapezius.
What is the trapezius?
It is a large, triangular muscle that extends from the occipital bone of the skull to the lower thoracic vertebrae of the spine and laterally to the spine of the scapula . It is the most superficial muscle of the back, and it is responsible for a variety of movements, including shrugging the shoulders, rotating the scapula, and extending the head.
The **trapezius **is also involved in breathing, as it helps to stabilize the shoulder girdle during inhalation. The trapezius is **innervated **by the spinal accessory nerve (CN XI).
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Answered by lhnnennaanekwe | 2024-06-18

The latissimus dorsi is the large, superficial muscle of the lower back, aiding in various shoulder joint movements.
The large paired superficial muscle of the lower back is known as the latissimus dorsi. This broad, triangular muscle plays a crucial role in the movement of the shoulder joint, including internal rotation, adduction, and extension of the arm. The latissimus dorsi originates on the ilium, sacral and thoracic vertebrae, and inserts on the humerus of the upper arm.

Answered by AkashKu | 2024-06-24

The large paired superficial muscle of the lower back is the latissimus dorsi. It plays a vital role in movements such as adduction, extension, and internal rotation of the arm, originating from the lower spine and inserting into the upper arm. This muscle is essential for various athletic activities and is innervated by the thoracodorsal nerve.
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Answered by lhnnennaanekwe | 2024-09-05