Back Flashcards Preview

Summer Anatomy > Back > Flashcards

Flashcards in Back Deck (38)
Loading flashcards...
1

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

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

 

Move Shoulder

2

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

serratus posterior superior and serratus posterior inferior

 

ACCESSORY respiratory muscles (use when breathing heavily)

3

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

Erector Spinae Group: iliocostalis, longissimus, semispinalis 

 

Move spine

4

What makes up the axial skeleton?

skull vertebral column sacrum ribs sternum

5

What makes up the appendicular skeleton?

clavicles scapulae upper extremities pelvis lower extremities

6

Where are the axial-to-appendicular connections?

sternoclavicular joints sacroiliac joints

7

Trapezius muscle proximal attachment

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

8

Trapezius muscle parts

  • 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

9

Trapezius muscle innervation

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

10

Trapezius muscle blood supply

  • Arterial supply:  transverse cervical artery

11

Latissimus Dorsi muscle proximal and distal attachment

  • 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)

12

latissimus dorsi innervation

  • Innervation:  thoracodorsal nerve

13

latissimus dorsi arterial supply

  • Arterial supply:  thoracodorsal artery

14

latissimus dorsi function

  • Function:  extends, adducts, rotates humerus medially

15

Rhomboid major and rhomboid minor muscles proximal/distal attachments

  • 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

16

Rhomboid major and rhomboid minor muscles function

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

17

Rhomboid major and rhomboid minor muscles innervation

  • Innervation:  dorsal scapular nerve

18

Levator Scapulae Muscle attachments

 

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

19

Levator Scapulae Muscle function

  • Function:  elevates scapula and rotates scapula to depress glenoid cavity

20

Levator Scapulae Muscle innervation

Innervation:  dorsal scapular nerve

21

Levator Scapulae Muscle arterial supply

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

22

What are the boarders of the triangle of auscultation?

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

23

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

  • 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

What is the function of the serratus posterior superior?

Function:  respiratory muscles

25

What is the innervation for the serratus posterior superior?

  • Innervation:  intercostal nerves

26

What is the blood supply for the serratus posterior superior?

  • Artery:  intercostal arteries

27

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

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

28

What is the function of the serratus posterior inferior?

  • Function:  respiratory muscles

29

What is the innervation for the serratus posterior inferior?

 

  • Innervation:  intercostal nerves

30

What is the blood supply for the serratus posterior inferior?

 

  • Artery:  intercostal arteries