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Term 2 Anatomy > Muscles of the Back (Quiz 3) > Flashcards

Muscles of the Back (Quiz 3) Flashcards

1
Q

The muscles of the superficial layer of the back (4)

A
  • Trapezius
  • Latissimus Dorsi
  • Levator Scapula
  • Rhomboids
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2
Q

The muscles of the intermediate layer of the back (2)

A
  • Serratus Posterior Superior
  • Serratus Posterior Inferior
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3
Q

3 Layers of the deep muscle of the back

A
  1. Superficial
  2. Intermediate
  3. Deep
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4
Q

Muscles of the superficial layer of the deep back muscles (2)

A
  1. Splenius Capitus
  2. Splenius Cervicis
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5
Q

Muscles of the intemediate layer of the Deep back muscles (3)

A
  1. Spinalis
  2. Longissimus
  3. Iliocostalis
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6
Q

5 muscles of the deep layer of the Deep back muscles

(3 Superomedial fibre direction, 2 Verticle fibre direction)

A
  • Superomedial Fibre Direction
  1. Semispinalis
  2. Multifidus
  3. Rotatores
  • Vertical Fibre Direction
  1. Interspinales
  2. Intertransversarii
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7
Q

2 muscles of the posterior Thorax

Accessory muscles of respiration

A
  1. Serratus Posterior Superior
  2. Serratus Anterior Superior
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8
Q

Group of back muscles that help to maintain posture and move the spine and head

A

Deep muscles (intrinsic muscles)

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9
Q

The 3 columns of muscles in the intermediate layer of the deep muscles of the back are collectively called?

A

The Erector Spinae Muscles

Aka Paraspinals

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10
Q

3 muscles in the deep layer of the back that have a superomedial fibre direction

Collectively called the Transversospinalis muscles

A
  1. Semispinalis
  2. Multifidus
  3. Rotatores
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11
Q

2 muscles in the deep layer of the back that have a verticle fibre direction

A
  1. Interspinals
  2. Intertransversarii
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12
Q

The groove between the Spinous process and the Transverse processes

A

Laminar Groove

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13
Q

Muscles found in the Laminar Groove

They attach from the TVPs to the SPs (of the superior vertebrae)

A
  • Semispinalis
  • Multifidus
  • Rotatores

(Superomedial fibre direction, Deep layer of the deep back muscles)

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14
Q

Muscle deep to rhomboids, and superficial to erector spinae

A

Serratus Posterior Superior

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15
Q

Muscle deep to Latissimus Dorsi/Thoracolumbar Fascia, and superficial to the Erector Spinae muscles

A

Serratus Posterior Inferior

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16
Q

Medial Attachment: SPs of C7-T3

Lateral Attachment: Superior borders of ribs 2-5

Supermedial Fibre direction

Action: Elvation of ribs 2-5 (with forced inhalation)

A

Serratus Posterior Superior

17
Q

Medial Attachment: SPs of T11-L2

Lateral Attachment: Lower 4 ribs (12-8)

Inferomedial fibre direction

Action: Draws ribs down and back (w/ forced expiration)

A

Serratus Posterior Inferior

18
Q

Inferior Attachment: SPs of C4-T2

Superior Attachment: Mastiod process and lateral superior nuchal line

Action (Unilateral Contraction): Ipsilateral rotation

Action (Bilateral Contraction) Extension of the Neck

A

Splenius Capitis

19
Q

Inferior Attachment: SPs of T3-T5

Superior Attachment: C1-C4 TVPs

Action (unilateral contraction): Ipsilateral Rotation

Action (bilateral contraction): Extension of the neck

A

Splenius Cervicis

20
Q

Muscles that arise inferiorly from the Thoracolumbar fascia

Spread out in a superolateral direction

Subdivided into 3 columns of muscle on either side of the spine

(each column has 3 segments)

A

Intermediate layer of the Deep back muscles

21
Q

The Muscles of the intermediate layer of the Deep back muscles, from medial to lateral

A
  • Spinalis
  • Longissimus
  • Iliocostlis
22
Q

A very thin muscle

Sits in the the Laminar Groove

Attaches to SPs

A

Spinalis

23
Q

3 regions spinalis passes through

A

Thoracis (upper T-spine)

Cervicis

Capitis

24
Q

Longest Column of the erector spinae

Attaches to TVPs

A

Longissimus

25
Q

3 regions that Longissimus passes through

A

Throacis (T-Spine TVPs)

Cervicis (C-Spine TVPs)

Capitis (Mastiod Process)

26
Q

Most lateral of the Erector Spinae muscles

Attaches to the angles of the ribs

A

Iliocostalis

27
Q

3 regions Iliocostalis passes through

A

Lumborum (ribs 12-8)

Thoracis (ribs 7-1)

Cervicis (TVPs of C3-C6)

28
Q

Actions of all erector spinae muscles

  1. unilateral
  2. bilateral
A
  1. Lateral flexion of the vertebral column
  2. Extension of the Vertebral column
29
Q

Deep muscle that covers 1/2 of the spinal cord (skips 3-6 vertebrae)

Attaches superiorly to the occipital bone between the superior and inferior nuchal lines

Largest mass in the posterior neck

Action (unilateral contraction): Contralateral rotation of the neck

Action (bilateral contraction): Extension of the head/neck

A

Semispinalis

30
Q

Deep muscle from S4-C2 (skipping 1-3 vertebrae)

Only muscle whose fibres run across the posterior sacrum

Actions (unilateral contraction): Lateral flexion, Contralateral rotation

Actions (bilateral contraction): Extension of the spine, stabilization

A

Multifidus

31
Q

Deepest muscle in the Laminar groove

Attaches TVPs to SP above

Action (unilateral contraction): Contralateral rotation

Action (bilateral contraction): Stabilization

A

Rotatores

(Longus and Brevis)

32
Q

Rotatores muscle that skips 1 vertebra

ex. TVP of C6 to SP of C4

A

Rotatores Longus

33
Q

Rotatores muscle that attaches to the next highest vertebra

Ex. TVP of C6 to SP of C5

A

Rotatores Brevis

34
Q

A paired muscle (on either side of cervical and lumbar SPs) of the deep layer of the Deep back muscles

Has a vertical fibre direction

Action: extension (small movement)

A

Interspinales

35
Q

A muscle of the deep layer of the Deep back muscles

Attaches TVPs of adjacent vertebrae of the cervical and lumbar spine

Has a Verticle fibre direction

Action: lateral flexion (small movement)

A

Intertransversarii

Term 2 Anatomy (4 decks)

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