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3rd Year Summary > Anatomy 9: Back and Spine Anatomy > Flashcards

Anatomy 9: Back and Spine Anatomy Flashcards

1
Q

What is the function and attachments of the extrinsic back muscles?

A

Attach the back to the upper limb/pectoral girdle

Move the upper limb

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2
Q

What is the function and attachments of the intrinsic back muscles?

A

Located entirely within the back

Maintain back posture and move the spine

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3
Q

What are the main extrinsic back muscles?

A

Trapezius
Latissimus dorsi
Levator Scapulae
2x Rhomboids

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4
Q

What is the function and attachments of the intrinsic back muscles?

A 
Erector spinae (superficial)
Transversospinalis (deep)
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5
Q

What are the muscles of the anterolateral abdominal wall?

A

Transversus abdominis
Internal oblique
External oblique

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6
Q

What are the muscles of the posterior abdominal wall?

A

Psoas major

Quadratus Lumborum

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7
Q

Where does the erector spinae attach?

A

All muscle fibres attach inferiorly by a common tendon to the sacrum and iliac crest

Individual muscle fibres attach superiorly to either a rib, transverse process of a vertebrae or a spinous process

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8
Q

Where do individual muscle fibres of the transversopinalis attach?

A 
Between:
A vertebra and the skull
A vertebra and a rib 
One vertebra and another vertebra
The sacrum and a vertebra
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9
Q

Extension of the back is a function of the extrinsic back muscles T/F

A

False, intrinsic back muscles

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10
Q

What is flexion of the spine a function of?

A

Psoas major

Rectus abdominis

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11
Q

What is the nerve supply to the intrinsic muscles of the back?

A

Dermatomal/myotomal

Posterior rami branches

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12
Q

Where are intervertebral discs found?

A

Between all vertebrae except C1-C2 and fused sacrum/coccyx

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13
Q

Name 3 ligaments of the spine

A

Ligamentum Flavum
Posterior Longitudinal Ligament
Anterior Longitudinal Ligament

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14
Q

What are the features of the Posterior Longitudinal Ligament of the spine?

A

Narrow, weak
Attaches to posterior aspects of all vertebral bodies and intervertebral discs
Less support for disc

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15
Q

What are the features of the Anterior Longitudinal Ligament of the spine?

A

Broad, strong
Attaches to all anterior aspects of all vertebral bodies and intervertebral discs
Stronger support for disc

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16
Q

Which ligament prevents over flexion of the spine?

A

Posterior Longitudinal

17
Q

Which ligament prevents over extension of the spine?

A

Anterior Longitudinal

18
Q

What is the Atlanto-occipital joint movement?

A

Nodding

19
Q

What is the Atlanto-axial joint movement?

A

Saying no

3rd Year Summary (17 decks)

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