Neck Muscles and Fascia

Question 0

Insertion of Platysma muscle

Answer 0

Mandible

–>(specifically on the inferior border with some fibers sweeping upward and blending with Risorius)

Question 1

Origin for the Platysma Muscle

Answer 1

Superficial fascia of deltoid and and pectoral regions

Question 2

What are the 2 actions of the Platysma muscle?

Answer 2

1. Stretches tight the skin of the neck

2. Depress Mandible

Question 3

What nerve and what specific branch innervates the Platysma muscle?

Answer 3

Facial Nerve (CN VII), Cervical branch

Question 4

Origin of the Sternocleidomastoid muscle

Answer 4

Manubrium and Clavicle (medial third of clavicle)

Question 5

Insertion of the Sternocleidomastoid muscle

Answer 5

Mastoid Process and lateral half of superior nuchal line

Question 6

What are the two actions of the Sternocleidomastoid muscle?

Answer 6

1. Bilaterally - Flexes neck

2. Individually - draws head to shoulder and turns face to opposite side

Question 7

What two nerves innervate the Sternocleidomastoid muscle?

Answer 7

1. Spinal Accessory n.

2. APR of C2 and C3

Question 8

Origin of Trapezius muscle

Answer 8

Spines of all thoracic and cervical vertebrae

Question 9

Insertion of Trapezius muscle

Answer 9

Spine and Acromion of scapula

Lateral third of clavicle

Question 10

What are the two actions of the Trapezius on the head?

Answer 10

1. Bilaterally - extends head

2. Individually - tilts chin to opposite side

Question 11

What are the two actions of the Trapezius on the limb girdle?

Answer 11

1. Rotates and adducts scapula

2. Elevates scapula and clavicle

Question 12

What innervates the Trapezius?

Answer 12

Spinal Accessory n.

APR of C3 and C4

Question 13

Name all eight muscles of the posterior triangle of the neck

Answer 13

Platysma, Sternocleidomastoid, Trapezius, Splenius Capitis, Levator Scapulae, Posterior Scalene, Middle Scalene, Anterior Scalene

Question 14

Origin of the Splenius Capitis

Answer 14

Ligamentum Nuchae (lower part) and Cervical Spines (lower)

Question 15

Insertion of Splenius Capitis

Answer 15

Mastoid Process and Nuchal Line (superior)

Question 16

Two actions of the Splenius Capitis

Answer 16

1. Bilateral - Extends head

2. Individually - Flexes head laterally, rotates head to ipsilateral side

Question 17

What innervates the Splenius Capitis muscle?

Answer 17

Segmented PPR of cervical spinal nerves

Question 18

What is the origin of the Levator Scapulae muscle

Answer 18

Transverse processes of 4 upper cervical vertebrae

Question 19

The Levator Scapulae inserts in only place. What is the insertion?

Answer 19

Scapula (superior portion of the lateral border)

Question 20

What is the action of the Levator Scapulae

Answer 20

Elevates and rotates scapula

Question 21

What nerve innervates the Levator Scapulae?

Answer 21

Dorsal Scapular Nerve

Question 22

Origin of Posterior Scalene muscle

Answer 22

Transverse processes on portion of cervical vertebrae (C5 and C6)

Question 23

Insertion of the Posterior Scalene?

Answer 23

Second rib (superior aspect)

Question 24

What are the 2 actions of the Posterior Scalene muscle?

Answer 24

1. Bilaterally - Flexes neck | 2. Individually - Flexes neck laterally

Question 25

Innervation of Posterior Scalene?

Answer 25

APR of C5 to C8

Question 26

Origin of the Middle Scalene muscle

Answer 26

Transverse Processes of Cervical portion of vertebrae (C2 to C7)

Question 27

Insertion of Middle Scalene

Answer 27

First Rib (Superior aspect)

Question 28

What are the two actions of the Middle Scalene?

Answer 28

1. Bilaterally - Flexes Neck | 2. Individually - Flexes neck laterally

Question 29

What is the innervation of the Middle Scalene muscle

Answer 29

APR of C3 and C4

Question 30

Origin of Anterior Scalene

Answer 30

Transverse Processes of Cervical portion of vertebrae (C3 to C6)

Question 31

Insertion of Anterior Scalene

Answer 31

Scalene tubercle of First rib

Question 32

What are the two actions of the Anterior Scalene?

Answer 32

1. Bilaterally - Flexes Neck | 2. Individually - Flexes neck laterally

Question 33

Other than their respective main actions, the scalene muscles and sternocleidomastoid muscles aid in what other action of the body?

Answer 33

Respiration. They aid in inspiration by elevating the ribs and sternum

Question 34

Innervation of the Anterior Scalene muscle

Answer 34

APR of C5 to C8

Question 35

What are the two subdivisions of the Posterior Triangle?

Answer 35

1. Occipital | 2. Supraclavicular

Question 36

What are the three things that make up the Supraclavicular triangle?

Answer 36

Omohyoid, Sternocleidomastoid, Clavicle

Question 37

Three aspects of the Occipital Triangle?

Answer 37

Sternocleidomastoid, Trapezius, Omohyoid

Question 38

Inferior border of the Posterior Triangle?

Answer 38

Clavicle

Question 39

Anterior border of the Posterior Triangle?

Answer 39

Sternocleidomastoid muscle

Question 40

What muscle is housed in the Superficial Fascia?

Answer 40

Platysma

Question 41

The four fascias of the Deep Fascia of the neck

Answer 41

1. Investing Fascia 2. Pretrachial Fascia 3. Carotid Sheath 4. Prevertebral Fascia

Question 42

What three things are found within the Carotid Sheath?

Answer 42

1. Common Carotid a. 2. Vagus n. 3. Internal Jugular v.

Question 43

Two muscles found within the Investing Fascia of the neck

Answer 43

Sternocleidomastoid m. & Trapezius m.

Question 44

Three things found in the Pretrachial Fascia

Answer 44

1. Thyroid Gland 2. Trachea 3. Esophagus

Question 45

What is housed in the Pre-vertebral Fascia?

Answer 45

Vertebrae and deep back muscles

Question 46

What is one thing specifically different about the Pretrachial Fascia?

Answer 46

It does NOT envelope any muscles