Anatomy: Pectoral Girdle

Question 1

Trapezius Origin

Answer 1

• Occipital Protuberance
• Medial Portion of the Superior Nuchal Line of Occiput
• Ligamentum Nuchae
• SP’s of C7 through T12

Question 2

Trapezius Insertion

Answer 2

• Lateral Portion of Clavicle
• Acromion Process
• Spine of Scapula

Question 3

Upper Trapezius Bilateral Action

Answer 3

• Extends Head and Neck

Question 4

Upper Trapezius Unilateral Actions

Answer 4

• Laterally Flexes Head and Neck
• Rotates Head and Neck to Contralateral Side
• Upwardly Rotates Scapuls

Question 5

Middle Trapezius Actions

Answer 5

• Adducts (Retracts) Scapula
• Stabilizes Scapula

Question 6

Lower Trapezius Actions

Answer 6

• Depresses Scapula
• Upwardly Rotates Scapula

Question 7

Rhomboids Major Origin

Answer 7

SPs T2 to T5

Question 8

Rhomboids Minor Origin

Answer 8

SPs C7 to T1

Question 9

Rhomboids Insertion

Answer 9

Medial Border of the Scapula Between Spine and Inferior Angle

Question 10

Trapezius Characteristics

Answer 10

• Non Ropy
• Superficial

Question 11

Rhomboids Actions

Answer 11

• Adducts Scapula
• Elevates Scapula
• Downwardly Rotates Scapula

Question 12

Rhomboids Characteristics

Answer 12

• Non Ropy
• Deep

Question 13

Levator Scapula Origin

Answer 13

Traverse Processes of C1 to C4

Question 14

Levator Scapula Origin

Answer 14

Medial Border of Scapula Between Superior Angle and Superior Portion of Spine of Scapula

Question 15

Levator Scapula Unilateral Actions

Answer 15

• Elevates Scapula
• Downwardly Rotates
• Lateral Flexes Hand Necks
• Ipsilaterally Rotates Head and Neck

Question 16

Levator Scapula Bilateral Actions

Answer 16

• Extends Head and Neck

Question 17

Levator Scapula Characteristics

Answer 17

• Non Ropy
• Superficial and Deep

Question 18

Serratus Anterior Origin

Answer 18

External Surfaces of Upper 8 or 9 Ribs

Question 19

Serratus Anterior Insertion

Answer 19

Anterior (Costal) Surface of Medial Barber of Scapula

Question 20

Serratus Anterior Actions

Answer 20

• Abducts Scapula
• Depresses Scapula
• Upwardly Rotates Scapula
• Holds Medial Border of Scapula Against Ribcage
• May Act in Forced Inspiration

Question 21

Serratus Anterior Characteristics

Answer 21

• Non Ropy
• Superficial and Deep

Question 22

Pectoralis Minor Origin

Answer 22

Ribs 3, 4, 5

Question 23

Pectoralis Minor Insertion

Answer 23

Coracoid Process of Scapula

Question 24

Pectoralis Minor Actions

Answer 24

• Depresses Scapula
• Abducts Scapula
• Downwardly Rotates Scapula
• Assists in Forced Inspiration

Question 25

Pectoralis Minor Characteristics

Answer 25

• Non Ropy
• Deep

Question 26

Trapezius Upper Fibers Palpation

Answer 26

• Prone
• Grasp the superficial tissue on the top the shoulder and follow the fibers superiorly toward the occiput

Question 27

Trapezius Middle Fibers Palpation

Answer 27

• Prone
• Slide medially from the spine of the scapula onto the trapezius

Question 28

Trapezius Lower Fibers Palpation

Answer 28

• Prone
• Push fingers along the line from the spine of the scapula to T12

Question 29

Rhomboids Palpation

Answer 29

• Prone
• Strum vertically across medial border of scapula to spinous processes C7 to T5

Question 30

Levator Scapula Palpation

Answer 30

• Prone
• Strum across superior angle and upper region of medial border of the scapula to transverse processes of the C1 to C4

Question 31

Serratus Anterior Palpation

Answer 31

• Supine; Arm Abducted
• Place finger pads along the side of ribs 1 to 8/9 and strum across

Question 32

Pectoralis Minor Palpation

Answer 32

• Supine; Arm Abducted
• Slide under pectoralis major and follow from the coracoid process to ribs 3, 4, 5