Chest and back Flashcards Preview

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Flashcards in Chest and back Deck (19):
1

Which muscle is innervated by the thoracodorsal nerve?

Latissimus dorsi

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2

What are the superficial muscles of the back?

1. Trapezius

2. Latissimus dorsi

3. Levator scapulae

4. Rhomboid minor and major

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3

What are the three actions of the trapezius on the scapula?

1. Elevates

2. Retracts

3. Rotates 

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4

What are the three actions of the latissimus dorsi on the humerus?

1. Extension

2. Adduction

3. Medial/internal rotation

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5

What is the function of the levator scapulae?

Elevation of the scapula

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6

What are the two actions of the rhomboids?

1. Retraction of the scapula

2. Rotation of the scapula

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7

What is the innervation of the rhomboids?

Dorsal scapular nerve

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8

What is the innervation of the levator scapulae?

Dorsal scapular nerve

+ C3-C4

 

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9

What are the 3 muscles of the pectoral region?

1. Pectoralis major

2. Pectoralis minor

3. Serratus anterior

10

What is the function of the pectoralis major?

Adduction and medial rotation of the humerus

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11

What is the origin and insertion of the pectoralis major?

Origin: clavicular and sternal head

Insertion: lateral lip of the bicipital groove of the humerus

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12

What is the function of the pectoralis minor?

Stabilisation of the scapula

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13

What is the origin and insertion of the pectoralis minor?

Origin: ribs 3-5

Insertion: coracoid process

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14

What is the origin and insertion of the serratus anterior?

Origin: lateral part of ribs 1-8

Insertion: anterior surface of the medial border of the scapula

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15

Why does tripoding aid breathing?

When the scapula is stabilised, the pectoralis minor elevates the ribs with respiration

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16

What is the origin and insertion of the trapezius?

Origin: skull, nuchal ligament and spinous process of C7-T12

Insertion: lateral clavicle, acromion and spine of scapula

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17

What are the origins and insertions of the latissimus dorsi?

Origin: T6-T12, iliac crest

Insertion: bicipital groove of the humerus

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18

What is the origin and insertion of the levator scapulae

Origin: transverse processes C1-C4

Insertion: superior medial margin of the scapula

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19

What is the origin and insertion of the rhomboids?

Origin: spinous process C6-T4

Insertion: medial border of scapula