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Anatomy II Exam 2 > Lecture 13 - Suboccipital Triangle and Joints of Head and Neck > Flashcards

Lecture 13 - Suboccipital Triangle and Joints of Head and Neck Flashcards

1
Q

Bony Articulations

A

Occipital Bones
Atlas
Axis

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2
Q

Occipital Bones Articulation

A

Occipital Condyles

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3
Q

Atlas Articulations

A
  • Posterior tubercle
  • Posterior arch
  • Anterior arch
  • Transverse process with foramina
  • Lateral masses:
  • Articulation with occipital condyles
  • Articulation with axis
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4
Q

Axis Articulations

A
  • Dens (odontoid process)
  • Spinous process
  • Transverse processes with foramina
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5
Q

Which sits on top of the other directly articulating with the occipital bone? Axis or Atlas?

A

Atlas sits atop Axis

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6
Q

What are the special names for C1 and C2?

A

Atlas and Axis

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7
Q

Ligaments of vertebral column

A 
•Anterior longitudinal ligament 
•Posterior longitudinal ligament
•Ligamentum flavum 
•Ligamentum nuchae: (Supraspinous + interspinous ligaments
)
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8
Q

Craniovertebral Joint

A

Three Synovial Joints
•No intervertebral disc.
•Between dens and anterior arch of the atlas.
•Between lateral masses of atlas and axis (x2).

Ligaments: •Apical ligament. •Alar ligaments. •Cruciate ligaments. •Tectorial membrane.

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9
Q

SuboccipitalTriangle Muscles

A
  • Obliquus capitis superior
  • Obliquus capitis inferior
  • Rectus capitis posterior major
  • Rectus capitis posterior minor
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10
Q

Obliquus capitis superior

A

Weak extensor of the neck

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11
Q

Obliquus capitis inferior

A

Strong rotator of atlas

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12
Q

Rectus capitis posterior major

A

Extension of vertebral column

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13
Q

Rectus capitis posterior minor

A

Extension of vertebral column

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14
Q

Suboccipital Triangle Floor and Roof

A

Floor:
•Posterior atlanto-occipital membrane
Roof:
•Semispinalis capitis muscle

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15
Q

Suboccipital Triangle Contents

A
  • Suboccipital nerve
  • Greater occipital nerve
  • Third occipital nerve
  • Vertebral Artery
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16
Q

Suboccipital nerve

A
  • Dorsal ramus of C1
  • No sensory function and no dorsal root
  • Motor to muscles of suboccipital triangle
17
Q

Greater occipital nerve

A
  • Dorsal ramus of C2

* Sensory to back of skull

18
Q

Third occipital nerve:

A

Dorsal ramus of C3

Anatomy II Exam 2 (8 decks)

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