Podcast
Questions and Answers
Which muscles are primarily involved in scapular elevation?
Which muscles are primarily involved in scapular elevation?
- Levator scapulae (correct)
- Upper fibers of trapezius (correct)
- Rhomboids major and minor
- Pectoralis minor
What is the range of motion for full scapular elevation?
What is the range of motion for full scapular elevation?
- No separation from the ear
- Approximately 3 fingers separating from the ear (correct)
- Two fingers separating from the ear
- One finger separating from the ear
What is a limiting factor of scapular elevation range of motion?
What is a limiting factor of scapular elevation range of motion?
- Tension of costo-clavicular ligament (correct)
- Strength of the levator scapulae
- Tension of upper trapezius
- Flexibility of the rotator cuff
What is the action of the upper fibers of the trapezius during bilateral action?
What is the action of the upper fibers of the trapezius during bilateral action?
Which of the following describes the insertion point of the levator scapulae?
Which of the following describes the insertion point of the levator scapulae?
What effect does weakness in scapular elevator muscles have?
What effect does weakness in scapular elevator muscles have?
Which nerve supplies the upper fibers of trapezius?
Which nerve supplies the upper fibers of trapezius?
Which muscle is not primarily involved in scapular depression?
Which muscle is not primarily involved in scapular depression?
Which muscles are primarily responsible for scapular elevation?
Which muscles are primarily responsible for scapular elevation?
What is the approximate distance when the shoulder is fully elevated in terms of fingers from the ear?
What is the approximate distance when the shoulder is fully elevated in terms of fingers from the ear?
What is a limiting factor for the range of motion during scapular elevation?
What is a limiting factor for the range of motion during scapular elevation?
Which nerve innervates the upper fibers of trapezius?
Which nerve innervates the upper fibers of trapezius?
What action is performed by the upper fibers of trapezius when acting unilaterally?
What action is performed by the upper fibers of trapezius when acting unilaterally?
Which muscle group assists in scapular depression?
Which muscle group assists in scapular depression?
What would likely be an effect of weakness in scapular elevator muscles?
What would likely be an effect of weakness in scapular elevator muscles?
Which of the following muscles is NOT involved in scapular elevation?
Which of the following muscles is NOT involved in scapular elevation?
Flashcards
Scapular Elevation Muscles
Scapular Elevation Muscles
Muscles that lift the scapula (shoulder blade).
Scapular Elevation ROM
Scapular Elevation ROM
The range of movement for lifting the scapula, roughly 3 finger widths approximately above the ear.
Trapezius (upper fibers)
Trapezius (upper fibers)
Muscle that elevates the scapula, also extends and rotates neck.
Levator Scapulae
Levator Scapulae
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Scapular Depression Muscles
Scapular Depression Muscles
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Scapular Depression ROM
Scapular Depression ROM
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Scapular Depressor Muscles
Scapular Depressor Muscles
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Weakness in Scapula Elevator muscles
Weakness in Scapula Elevator muscles
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Scapular Elevation
Scapular Elevation
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Primary Muscles of Scapular Elevation
Primary Muscles of Scapular Elevation
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Range of Motion for Scapular Elevation
Range of Motion for Scapular Elevation
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Weakness of Scapular Elevators
Weakness of Scapular Elevators
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Scapular Depression
Scapular Depression
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Primary Muscles of Scapular Depression
Primary Muscles of Scapular Depression
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Range of Motion for Scapular Depression
Range of Motion for Scapular Depression
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Weakness of Scapular Depressors
Weakness of Scapular Depressors
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Study Notes
Scapular Elevation and Depression
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Objectives: Students will learn to identify the muscles involved in scapular elevation and depression, describe their range of motion, and understand the effects of weakness in these muscles.
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Content: The content covers the anatomy of muscles involved in elevation and depression of the scapula, their range of motion, and effects of weakness in these muscles.
Scapular Elevation Muscles
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Primary Muscles: Upper fibers of trapezius and levator scapulae.
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Range of Motion: Shoulder is lifted up approximately 3 fingers' width from the ear.
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Limiting Factors: Costo-clavicular ligament tension and tension in muscles depressing the scapula (pectoralis minor, subclavius, lower fibers of trapezius).
Anatomy of Trapezius (Upper Fibers)
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Origin: External occipital protuberance, medial 1/3 of superior nuchal line, and ligamentum nuchae; spinous process of C7 vertebra.
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Insertion: Lateral 1/3 of clavicle, acromion process.
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Nerve Supply: Accessory nerve (cranial nerve XI), anterior rami of C2, C3 and C4.
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Action (Bilateral): Elevates scapula, extends cervical spine.
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Action (Unilateral): Extends, laterally flexes and rotates head/neck to the opposite side.
Anatomy of Levator Scapulae
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Origin: Transverse processes of C1-C4 vertebrae.
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Insertion: Medial border of scapula between superior angle and root of spine.
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Nerve Supply: Dorsal scapular nerve.
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Action (Bilateral): Extends cervical spine, elevates scapula.
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Action (Unilateral): Rotates and laterally flexes cervical vertebrae on same side.
Scapular Depression
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Primary Muscles: Lower fibers of trapezius, middle fibers of trapezius (accessory).
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Range of Motion: Depression is equivalent to 3-4 fingers.
Limiting Factors of Range of Motion
- Tension of interclavicular ligament, articular disc of sternoclavicular joint, tension in trapezius (upper fibers), levator scapulae and sternocleidomastoid (clavicular head).
Anatomy of Trapezius (Lower Fibers)
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Origin: Spinous processes of T6-T12.
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Insertion: Apex of spine of scapula.
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Nerve Supply: Accessory nerve (cranial nerve XI), Anterior rami of C2, C3, and C4.
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Action: Depresses scapula and stabilizes when middle/upper fibers are working.
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Description
This quiz focuses on the muscles involved in scapular elevation and depression, including their anatomy, range of motion, and implications of muscle weakness. Students will gain a deeper understanding of the trapezius and levator scapulae muscles and how they function in shoulder movement.
