Back Flashcards

1
Q

What muscles make up the Superficial layer of the back? What doe they do?

A

Trapezius, latissimus dorsi, levator scapulae, rhomboid major, rhomboid minor

Move Shoulder

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2
Q

What muscles make up the intermediate layer of the back? What do they do?

A

serratus posterior superior and serratus posterior inferior

ACCESSORY respiratory muscles (use when breathing heavily)

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3
Q

What muscles make up the deep layer of the back? What do they do?

A

Erector Spinae Group: iliocostalis, longissimus, semispinalis

Move spine

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4
Q

What makes up the axial skeleton?

A

skull vertebral column sacrum ribs sternum

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5
Q

What makes up the appendicular skeleton?

A

clavicles scapulae upper extremities pelvis lower extremities

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6
Q

Where are the axial-to-appendicular connections?

A

sternoclavicular joints sacroiliac joints

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7
Q

Trapezius muscle proximal attachment

A
  • Proximal attachment: external occipital protuberance, nuchal ligament, spinous process of C7 to T12
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8
Q

Trapezius muscle parts

A
  • Superior part: attaches to lateral 1/3 of clavicle; elevates scapula
  • Middle part: attaches to acromion and spine of scapula; retracts scapula
  • Inferior part: attaches to medial end of spine of scapula; depresses scapula
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9
Q

Trapezius muscle innervation

A
  • Innervation: accessory nerve (CN XI)(motor innervation); branches of ventral rami of spinal nerves C3 and C4 (sensory/proprioception innervation)
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10
Q

Trapezius muscle blood supply

A
  • Arterial supply: transverse cervical artery
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11
Q

Latissimus Dorsi muscle proximal and distal attachment

A
  • Proximal attachment: spines of vertebrae T7 to T12, iliac crest, thoracolumbar fascia, ribs 9 to 12, lateral to their angles
  • Distal attachment: humerus (intertubercular sulcus)
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12
Q

latissimus dorsi innervation

A
  • Innervation: thoracodorsal nerve
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13
Q

latissimus dorsi arterial supply

A
  • Arterial supply: thoracodorsal artery
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14
Q

latissimus dorsi function

A
  • Function: extends, adducts, rotates humerus medially
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15
Q

Rhomboid major and rhomboid minor muscles proximal/distal attachments

A
  • Rhomboid minor:
    • Proximal attachment: nuchal ligament, spinous process of C7 and T1
    • Distal attachment: medial border of scapula
  • Rhomboid major:
    • Proximal attachment: spinous process of T2 to T5
    • Distal attachment: medial border of the scapula
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16
Q

Rhomboid major and rhomboid minor muscles function

A

Function of both muscles: retract scapula, rotate scapula to depress glenoid cavity, hold scapula close to thoracic wall

17
Q

Rhomboid major and rhomboid minor muscles innervation

A
  • Innervation: dorsal scapular nerve
18
Q

Levator Scapulae Muscle attachments

A
  • Distal attachment: superior angle of scapula
  • Proximal attachment: transverse processes of upper four cervical vertebrae
19
Q

Levator Scapulae Muscle function

A
  • Function: elevates scapula and rotates scapula to depress glenoid cavity
20
Q

Levator Scapulae Muscle innervation

A

Innervation: dorsal scapular nerve

21
Q

Levator Scapulae Muscle arterial supply

A
  • Arterial supply: dorsal scapular artery (may branch from subclavian artery or come from transverse cervical artery—“deep branch of transverse cervical artery”)
22
Q

What are the boarders of the triangle of auscultation?

A

Triangle of auscultation: bound by latissimus dorsi, trapezius, and rhomboid major muscle; area good for listening to sounds from thoracic organs—lungs

23
Q

What are the proximal/distal attachments for the serratus posterior superior?

A
  • Serratus posterior superior
    • Thin muscles beneath rhomboids
    • Proximal attachment: nuchal ligament and spinous process of C7 to T3
    • Distal attachment: ribs 2 to 5, lateral to their angles
24
Q

What is the function of the serratus posterior superior?

A

Function: respiratory muscles

25
Q

What is the innervation for the serratus posterior superior?

A
  • Innervation: intercostal nerves
26
Q

What is the blood supply for the serratus posterior superior?

A
  • Artery: intercostal arteries
27
Q

What are the proximal/distal attachments for the serratus posterior inferor?

A
  • Serratus posterior inferior
    • Proximal attachment: spinous processes of T11 to L2
    • Distal attachment: ribs 9 to 12 lateral to their angles
28
Q

What is the function of the serratus posterior inferior?

A
  • Function: respiratory muscles
29
Q

What is the innervation for the serratus posterior inferior?

A
  • Innervation: intercostal nerves
30
Q

What is the blood supply for the serratus posterior inferior?

A
  • Artery: intercostal arteries
31
Q

Where is the erector spinae group located?

A
  • Deep to serratus posterior muscles
32
Q

What is the spinalis muscle?

What is the inferior attachment?

What is the superioior attachment?

What vertebral levels is present at?

A
  • Spinalis muscle
    • Medial column of erector spinae m.
    • Inferior attachment: spinous processes
    • Superior attachment: spinous processes
    • Present at lumbar, thoracic and cervical vertebral levels
33
Q

What is the Longissimus ​ muscle?

What is the inferior attachment?

What is the superior attachment?

Where is it present?

A
  • Medial column of erector spinae m.
  • Inferior attachment: spinous processes
  • Superior attachment: spinous processes
  • Present at lumbar, thoracic and cervical vertebral levels
34
Q

What is the ileocostalis ​ muscle?

What is the inferior attachment?

What is the superior attachment?

Where is it present?

A
  • Iliocostalis muscle
    • Lateral column of erector spinae m.
    • Inferior attachment: ilium (iliac crest)
    • Superior attachment: ribs
35
Q

What is the function of the erector spinae?

A
  • Function: bends vertebral column laterally toward the side that is active
36
Q

What is the innervation for the erector spinae?

A
  • Innervation: dorsal rami
37
Q

What is the blood supply for the erector spinae?

A
  • Artery: intercostal arteries
38
Q
A