Superficial and Deep Back Flashcards

1
Q

Describe: Extrinsic muscles of the back

A

Muscles responsible for movement of the shoulder and upper limbs

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2
Q

Describe: Intrinsic muscles of the back

A

Muscles responsible for posture and movement of the head and spine

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3
Q

What muscles compose the Superficial Extrinsic muscles of the back?

A
  • Trapezius
  • Latissimus dorsi
  • Levator scapulae
  • Rhomboid minor
  • Rhomboid major
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4
Q

What muscles compose the Intermediate Extrinsic muscles of the back?

A
  • Serratus posterior superior

- Serratus posterior inferior

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5
Q

What muscles compose the Superficial Intrinsic muscles of the back?

A
  • Splenius cervicis

- Splenius capitis

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6
Q

What muscles compose the Intermediate Intrinsic muscles of the back?

A
  • Iliocostalis
  • Longissimus
  • Spinalis
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7
Q

What muscles compose the Deep Intrinsic muscles of the back?

A
  • Semispinalis
  • Multifidus
  • Rotatores
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8
Q

What is the innervation and blood supply for the: Trapezius?

A

Nerve: Cranial Nerve XI (Spinal Accessory)
Artery: Superficial branch of transverse cervical artery

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9
Q

What is the innervation and blood supply for the: Latissimus dorsi?

A

Nerve: Thoracodorsal nerve
Artery: Thoracodorsal artery

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10
Q

What is the innervation and blood supply for the: Rhomboid minor?

A

Nerve: Dorsal scapular nerve
Artery: Dorsal scapular artery

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11
Q

What is the innervation and blood supply for the: Rhomboid major?

A

Nerve: Dorsal scapular nerve
Artery: Dorsal scapular artery

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12
Q

What is the innervation and blood supply for the: Levator scapulae?

A

Nerve: Dorsal scapular nerve
Artery: Dorsal scapular artery

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13
Q

What is the function of the Trapezius?

A

Scapular movement, rotation of glenoid cavity

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14
Q

Where does Cranial Nerve XI arise from?

A

C1-C5 cervical spinal nerves

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15
Q

Where does Cranial Nerve XI enter/exit the skull?

A
  • Enters skull through foramen magnum

- Exits skull through jugular foramen

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16
Q

How do you test the Trapezius clinically?

A

Ask patient to shrug shoulders against resistance (evaluate strength of one side compared to the other)

  • Loss of symmetry
  • Drooping shoulder
  • Limited scapular movement
17
Q

What is the function of the Latissimus dorsi?

A

Extension and Adduction of the upper arm