Anatomy of the back and scapular region

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Questions and Answers

Which muscle connects the upper limb to the thoracic wall and vertebral column?

Levator scapulae
Trapezius (correct)
Latissimus dorsi
Rhomboid major

Which nerve supplies the Trapezius muscle?

Supra-scapular nerve
Thoraco-dorsal nerve
Spinal part of accessory nerve (correct)
Dorsal scapular nerve

Which muscle raises the medial border of the scapula?

Levator scapulae (correct)
Rhomboid minor
Deltoid
Supraspinatus

Which muscle abducts the arm and extends it laterally?

<p>Deltoid (A)</p> Signup and view all the answers

What is the action of the Latissimus dorsi muscle?

<p>Extends, adducts, and medially rotates the arm (C)</p> Signup and view all the answers

Flashcards

Trapezius muscle

Muscle connecting upper limb to thoracic wall and vertebral column.

Spinal accessory nerve

Nerve supplying the Trapezius muscle.

Levator scapulae

Muscle that raises the medial border of the scapula.

Deltoid muscle

Muscle that abducts and laterally extends the arm.

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Latissimus dorsi action

Extends, adducts, and medially rotates the arm.

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Study Notes

Muscles of the Upper Limb

The Trapezius muscle connects the upper limb to the thoracic wall and vertebral column.
The spinal accessory nerve (cranial nerve XI) supplies the Trapezius muscle.
The Levator scapulae muscle raises the medial border of the scapula.
The Deltoid muscle abducts the arm and extends it laterally.
The Latissimus dorsi muscle adducts the arm, extends it, and internally rotates the shoulder joint.

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Description

Test your knowledge of the muscles connecting the upper limb to the thoracic wall and vertebral column, as well as the muscles connecting the scapula to the humerus. Identify the nerve origin, insertion, and supply of the trapezius muscle and other relevant details.