Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Unit 2: SXS lab > Back Muscles > Flashcards

Back Muscles Flashcards

1
Q

Trapezius

A

O: external occipital protuberance, Superior nuchal line, nuchal ligament, and spinous processes of C7-T12
I: Lateral third of clavicle, acromion, and spine of scapula
N: Accessory nerve (cranial nerve XI)
B: transverse cervical artery, dorsal perforating branches of posterior intercostal arteries
A: Elevates, retracts, and rotates scapula; lower fibers depress scapula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Latissumus Dorsi

A

O: Spinous processes of T7-L5, sacrum, thoracolumbar fascia, iliac crest, and last three ribs
I: Humerus (intertubercular groove
N: Thoracodorsal nerve (C6-C8)
B: thoracodorsal artery, dorsal perforating branches of 9th/10th/11th posterior intercostal/subcostal, first 3 lumbar arteries
A: Extends, adducts, and medially rotates humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Rhomboid Minor

A

O: nuchal ligament and spinous processes of C7-T1
I: Medial border of scapula
N: Dorsal scapular nerve (C4-C5)
B: Dorsal scapular artery; deep branch of transverse cervical artery; dorsal perforating branches of the upper 5/6 posterior intercostal arteries
A: Retract scapula, rotate it to depress glenoid cavity, and fix scapula to thoracic wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Rhomboid Major

A

O: Major: spinous processes of T2-T5
I: Medial border of scapula
N: Dorsal scapular nerve (C4-C5)
B: Dorsal scapular artery; deep branch of transverse cervical artery; dorsal perforating branches of the upper 5/6 posterior intercostal arteries
A: Retract scapula, rotate it to depress glenoid cavity, and fix scapula to thoracic wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Serratus Posterior Superior

A

O: Ligamentum nuchae and spinous processes of C7-T3 I: Superior aspect of ribs 2-5
N: T1-T4 anterior rami
B: Posterior intercostal arteries
A: Elevates ribs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Serratus Posterior Inferior

A 
O: Spinous processes of T11-L3
I: Inferior border of ribs 9-12
N: T9-T12 anterior rami
B: Posterior intercostal arteries
A: Depresses ribs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What muscles make up extrinsic back muscles?

A
  • Trapezius
  • Latissmus Dorsi
  • Levator Scapulae
  • Rhomboid minor/major
  • Serratus Posterior Superior/Inferior
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What muscles make up intermediate muscles of back?

A

Splenius Capitus and Cervicus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Splenius capitus

A

O: Nuchal ligament, spinous processes of C7-T4
I: Mastoid process of temporal bone and lateral third of superior nuchal line
N: Dorsal rami of middle cervical nerves
B: Descending branch of occipital artery, deep cervical artery
A: Bilaterally: extends head
Unilaterally: laterally bends (flexes) and rotates face to same side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Splenius Cervicus

A

O: Spinous processes of T3-T6
I:Transverse processes of C1-C3
N: Dorsal rami of middle cervical nerves
B: Descending branch of occipital artery, deep cervical artery
A: Bilaterally: extends neck
Unilaterally: laterally bends (flexes) and rotates neck toward same side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Muscles that make up Deep muscles of the back

A

Erector Spinae Group and Transversospinalis Group

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Erector spinae group

A

Iliocostalis, Longissmus, Spinalis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Illiocostalis

A

O: Posterior sacrum, iliac crest, sacrospinous ligament, supraspinous ligament, and spinous processes of lower lumbar and sacral vertebrae
I:angles of lower ribs and cervical transverse processes
N: Dorsal rami of each region
B: c-occipital/deep cervical/vertebral arteries
t-dorsal branches of posterior intercostal/subcostal/and lumbar arteries
s-dorsal branches of lateral sacral arteries
A: Extends and laterally bends vertebral column and head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Longissimus

A

O: Posterior sacrum, iliac crest, sacrospinous ligament, supraspinous ligament, and spinous processes of lower lumbar and sacral vertebrae
I:between tubercles and angles of ribs, transverse processes of thoracic and cervical vertebrae, mastoid process
N: Dorsal rami of each region
B: c-occipital/deep cervical/vertebral arteries
t-dorsal branches of posterior intercostal/subcostal/and lumbar arteries
s-dorsal branches of lateral sacral arteries
A: Extends and laterally bends vertebral column and head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Spinalis

A

O: Posterior sacrum, iliac crest, sacrospinous ligament, supraspinous ligament, and spinous processes of lower lumbar and sacral vertebrae
I: Spinalis: spinous processes of upper thoracic and midcervical vertebrae
N: Dorsal rami of each region
B: c-occipital/deep cervical/vertebral arteries
t-dorsal branches of posterior intercostal/subcostal/and lumbar arteries
s-dorsal branches of lateral sacral arteries
A: Extends and laterally bends vertebral column and head

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Thoracolumbar fascia

A

Connective tissue enclosing the erector spinae muscles

17
Q

Transversopinalis group

A

Semi-spinalis, multifidus, and rotatores: Rotate and extend vertebral column

18
Q

Semi-spinalis

A

O: Transverse processes of C4-T12
I: Spinous processes of cervical and thoracic regions
N: Dorsal rami of spinal nerves
B: c- occipital/deep cervical/vertebral arteries
t- dorsal branches of posterior intercostal arteries
A:Extends head, neck, and thorax and rotates them to opposite side
-Spans 4-6 muscles, and is located in vertebral regions of Capitus, Cervical, Thoracic

19
Q

Mutifidus

A

O: Sacrum, ilium, and transverse processes of T1-T12 and articular processes of C4-C7
I: Spinous processes of vertebrae above, spanning two to four segments
N: Dorsal rami of each region
B: c- occipital, deep cervical, and vertebral arteries
t-branches of posterior intercostal/subcostal/and lumbar arteries
s- dorsel branches of lateral sacral arteries
A: Stabilizes spine during local movements
-Spans 2-4 vert
-Located in cervical, thoracic, lumbar (most prominent)

20
Q

Rotatores

A

O: Transverse processes of cervical, thoracic, and lumbar regions
I: Lamina and transverse process or spine above, spanning one or two segments
N: Dorsal rami of spinal nerves
B: dorsal branches of segmental arteries
A: Stabilize, extend, and rotate spine
-Spans 1-2 vert
-Cervical, thoracic, lumbar; most prominent in thoracic

21
Q

Levator scapulae

A

O: posterior tubercles of transverse processes of C1-C4
I: medial border of scapula from superior angle to spine
N: Ventral rami of C3-C4 and dorsal scapular nerve
B: dorsal scapular artery, transverse cervical artery, ascending cervical artery
A: Elevate scapula medially, inferiorly rotates glenoid cavity

Unit 2: SXS lab (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions