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Anatomy > Superifical Back muscles > Flashcards

Superifical Back muscles Flashcards

1
Q

List the superficial back muscles

A
  1. Latissimus Dorsi
  2. Trapezius
  3. Levator Scapulae
  4. Rhomboid Major
  5. Rhomboid Minor

(They move the upper limb)

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2
Q

What is the origin of the Trapezius muscle?

A
  1. Superior unchallenged Line
  2. External Occipital Protuberance
  3. Ligamentum Nuchae
  4. C7-T12 Spinous Processes
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3
Q

What is the insertion of the trapezius muscle

A
  1. Spine of scapula
  2. Acromion
  3. Lateral third of clavicle
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4
Q

What is the action of the upper part of the trapezius

A

Elevates the scapula

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5
Q

What is the action of the middle part of the trapezius

A

Retracts scapula

- pulls closer to midline

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6
Q

What is the action of the lower part of the trapezius

A

Depresses the scapula

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7
Q

What is the action of the upper and lower parts of the trapezius muscle together

A

They will rotate scapula to abduct the upper limb above the shoulder

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8
Q

What is the motor/ cranial nerve of the trapezius muscle?

A

Accessory Nerve/ Cranial Nerve XI (11)

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9
Q

What nerve serves as proprioception for the trapezius muscle?

A

C3 and C4 Spinal Nerves

(Provide self-awareness)

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10
Q

What artery serves as the main blood supply for the Trapezius muscle?

A

Superficial Branch of the Transverse cervical Artery

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11
Q

What is the origin of the Latissimus Dorsi?

A
  1. T7 to L5 Spinous processes

2. Sacrum and iliac Crest

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12
Q

What is the insertion of the Latissimus Dorsi?

A

Floor of intertubercular Sulcus

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13
Q

What are the actions of the Latissimus Dorsi?

A
  1. Abducts humerus
  2. Medially rotates Humerus
  3. Extends humerus
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14
Q

What is the neurovascular supply of the Latissimus Dorsi?

A
  1. Thoracodorsal nerve

2. Thoracodorsal artery

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15
Q

What muscles are deep to the trapezius?

A
  1. Levator Scapulae Muscle
  2. Rhomboid Minor Muscle
  3. Rhomboid Major Muscle
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16
Q

What is the origin of the Levator Scapulae Muscle?

A

C1-C4 transverse processes

17
Q

What is the origin of the rhomboid minor muscle?

A

Nuchal Ligament, C7 Spinous process

18
Q

What is the origin of the Rhomboid Major muscle?

A

Origin from T2-T5 spinous processes

19
Q

What is the insertion of the Levator Scapulae Muscle?

A

Insertion of Superior Angle of Scapula

20
Q

What is the insertion of the rhomboid minor muscle?

A

medial border at the spine of the scapula

21
Q

What is the insertion of the rhomboid Major muscle?

A

Insertion of medial border inferior to the spine of the scapula

22
Q

What is the action of the Levator scapulae

A

Elevates the scapula

23
Q

What is the action of the rhomboid muscles

A

Retract scapula toward midline and steadies it against the trunk; decreases glenoid fossa

24
Q

What is the neruovascular supply for the Levator scapulae and rhomboid muscles?

A

Dorsal scapular nerve
Dorsal scapular artery
(Run deep to the muscles)

Anatomy (19 decks)

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