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Anatomy > Anterior Neck Muscles > Flashcards

Anterior Neck Muscles Flashcards

1
Q

What is the Shape of the Sternocleidomastoid

A

Broad Band of Muscle

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2
Q

What is the Fibre Direction of the Sternocleidomastoid

A

Superolateral

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3
Q

What are the Origins of the Sternocleidomastoid

A
  • Sternal Head: Manubrium, Lateral to the Jugular Notch

- Clavicular Head: Superior Aspect of the Medial 1/3 of the Clavicle

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4
Q

What are the Insertions of the Sternocleidomastoid

A

Mastoid Process & Lateral Superior Nuchal Line

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5
Q

What are the Actions of the Sternocleidomastoid

A
  • Unilateral: Contralateral Rotation of C/S
  • Ipsilateral Side Bending of C/S
  • Bilateral: Extension of AO Joint, Flexion of C/S
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6
Q

What is the Shape of the Platysma

A

Wide, Thin Muscle

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7
Q

What is the Fibre Direction of the Platysma

A

Inferolateral & Superomedial

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8
Q

What is the Origin of the Platysma

A

Fascia of the Chest (Pectoral/Deltoid Muscles)

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9
Q

What are the Insertions of the Platysma

A

Inferior Mandible & Skin of Mouth

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10
Q

What are the Actions of the Platysma

A
  • Unilateral: Contralateral Rotation of C/S
  • Ipsilateral Side Bending of C/S
  • Bilateral: Extension of AO Joint, Flexion of C/S
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11
Q

What is the Shape of the Anterior, Middle & Posterior Scalenes

A

Long, Relatively Thin Bands

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12
Q

What is the Fibre Direction of the Anterior, Middle & Posterior Scalenes

A

Vertical

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13
Q

Which Scalene is not part of the Posterior Cervical Triangle

A

Anterior

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14
Q

What is the Origin of the Anterior Scalenes

A

Anterior Tubercles of TVP’s C3-C6

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15
Q

What is the Insertion of the Anterior Scalenes

A

Tubercle of 1st Rib

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16
Q

What are the Actions of the Anterior Scalenes

A
  • Flexion of Neck

- 1st degree role in Respiration - Elevate Ribs

17
Q

What is the Origin of the Middle Scalenes

A

Posterior Tubercles TVP’s C2-C7

18
Q

What is the Insertion of the Middle Scalenes

A

1st Rib Posterior to Groove for Subclavian Arteries

19
Q

What are the Actions of the Middle Scalenes

A
  • Lateral Flexion of Neck & Head

- 1st degree role in Respiration - Elevate Ribs

20
Q

What is the Origin of the Posterior Scalenes

A

Posterior Tubercles TVP’s C4-C6

21
Q

What is the Insertion for the Posterior Scalenes

A

2nd Rib

22
Q

What are the Actions of the Posterior Scalenes

A
  • Lateral Flexion of Neck & Head

- 1st degree role in Respiration - Elevate Ribs

23
Q

What is the Innervation of Sternocleidomastoid

A

CN XI (Accessory Nerve), Ventral Rami C2-C3

24
Q

What is the Innervation of Middle Scalenes

A

Ventral Rami C3-C8

25
Q

What is the Innervation of Platysma

A

CN VII (Facial Nerve)

26
Q

What is the Innervation of Posterior Scalenes

A

Ventral Rami C3-C8

27
Q

What is the Innervation of Anterior Scalenes

A

Ventral Rami C3-C8

Anatomy (30 decks)

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